Transmission

July 14, 2014

updated 2020-01

Contents:
1. Links to Transmission Parts
2. Piaggio-Vespa single-speed
3. Piaggio-Vespa variable-speed

 


1. Links to Transmission Parts

Most transmission parts are listed with the engine. These links go there.

Tomos chain drive

Tomos Gear driven
with final Chain drive

G-C: Gear driven with final Chain drive

Garelli, Kreidler, Minarelli, Morini, Puch, Sachs, Tomos

This type has an oil bath clutch and gears combined with the engine in one unit.
The transmission parts are listed with the engine parts. The links take you there.

 

1980 Peugeot

Peugeot Belt driven
with final Chain drive

B-C: Belt driven with final Chain drive

Derbi, Laura (Batavus), Motobecane, Peugeot, Solo

This type has a dry clutch, V-belt, and an external pulley with sprocket.
The clutch and variator parts are listed with the engine parts. Use the links.

 

 

Honda Belt driven
with final Gear drive

B-G: Belt driven with final Gear drive

Honda PA50, Kinetic, Piaggio-Vespa

This type has a dry clutch, V-belt, and oil bath gears inside the rear wheel.
The clutches, pulleys, variator, and rear hub transmission are listed below.

 


front pulley-clutch

Vespa one speed belt drive

Piaggio belt drive
with fixed pulleys

2. Piaggio Single-Speed

2a. Piaggio Front Pulley-Clutch
(Fixed Pulley with Dual Auto Clutch)

5 parts catalogs have 5 quantity columns: C C C C P
The quantity is zero (blank) if the part is not on any of the bike models in that catalog.

Ciao
1967-71
26 mph

Ciao
1972-75
26 mph

Ciao
1976-77
20  30

Ciao
1978-80
20 25 30

Ciao PX
1980-83
20 25 30

 

.
.
Parts only on 1967-71 Ciao are light green.
Parts only on 20 mph versions are dark red.
Superseded part numbers are crossed out
New # source is motorcyclespareparts.eu 

Piaggio front clutch exploded view

20 mph pulleys info from Moped Army Wiki
The 20 mph front pulley 122689 is bigger than 136141.
It has higher gearing, not lower like you would expect.
The 20 mph rear pulley 114848 is smaller than 103049.
That also has higher gearing, not lower.
The gearbox had the lower gearing, not the pulleys.
Piaggio’s tactic made increasing the speed difficult.

# quantity
.# CCCCP  price   part# 
 alt#   description
45 11111 $5.00 104040  6608  spacer ∅12-23.5×5.5-3
46 11111 $2.50 000674  6610  circlip inner 25×1.2
47 11111 $2.50 103556 6605  washer ∅12.0/23.5×1.0
48 22222 $2.50 103557 6606  washer ∅16.2/23.5×0.6
49 01111 $11.0 120668  5813  needle bearing HK1622
50 11111 $9.50 104234  5577  bush ∅12/16 x 28.9
51 10000  none  120788  0000  pulley-drum bare
51 01111 $35.0 136141  6603  pulley-drum bare
51 00111  none  122689  0000  pulley-drum says 30km
52 10000  none  102479  0000  pulley-clutch assy
52 01111 $110. 136140  5575  pulley-clutch assy
52 00111  none  114849  0000  pulley-clutch assy 30km
53 22222  none  120262  0000  start shoe cushion
54 01111  none  124571  5901  oil seal 16 x 22 x 3
55 22222 $12.0 121213  5573  start shoe set
56 22222 $2.00 121537 5576A start spring ∅1.2-7.9-22
57 11111  old# 121022 220441 push ring
57 11111 $4.00 220441  6604  push ring
58 11111 $2.50 006426  6609  circlip outer 26×1.2
59 11111 $12.0 114913  5387  start clutch drum
61 33333 $3.00 121753  0000  run spring ∅1.1-7.7-23.6
61 00000  soon   221600 5576fv run spring ∅1.2-7.9-22
62 33333  old# 104480 249813 run shoe set
62 33333 $15.0 249813  5570  run shoe set
63 11111 $6.00 104488  6607  run clutch plate
64 11111 $0.50 016302  0000  star lock washer ∅8
65 11111 $3.00 015229  0000  plain nut M8 17hex
65 00000  soon   015229  5185  flange nut M8 17hex

 


single speed rear hub

2b. Piaggio Rear Pulley (fixed) and Belt

2c. Piaggio Rear Hub (single speed)

 

5 parts catalogs have 5 quantity columns: C C C C P
The quantity is zero (blank) if the part is not on
any of the bike models in that catalog.

L, single speed hub with 2 gears
R, variator type hub with 5 gears

Parts are black for 25-30 mph, light green for early ’67-71,
dark red for 20 mph, or bright red for 20 mph with extra gears.

 

Ciao
1967-71
26 mph

Ciao
1972-75
26 mph

Ciao
1976-77
20  30

Ciao
1978-80
20 25 30

Ciao PX
1980-83
20 25 30

 

 

 

 

 

Piaggio single speed rear hub

# quantity
.
# CCCCP  price   part#
  alt#   description  
0
1 10000 none   0152270000 nut M12? <212541
01
10000 none   0152450000 nut M12? >212540
0
2 10000 none   0163010000 washer <212541
02
10000 none   0163150000 washer >212540
03 10000 none   1149360000 mount bolt plate
0
4 11111 $25.0 1036310000 freewheel 18T Ocean
04 11111 $15.0 103631a 000 freewheel 18T generic
05 40000 $0.70 0155920000 hex bolt M8 x 14
05 04444 $1.50 0311503010 hex bolt M10-1.5×14
06 20000 $0.25 0125400000 lock washer ∅8
06 04444 $0.50 0164100000 lock washer ∅10

07 10000 none   102899 0000 keyed freewhl hub
07 01111 $12.0 1315150000 screw-on freew. hub
08 10000 none   102902 0000 dust cover big
08 01111 none   124226 0000 dust cover
09 11111 $8.00 1138170000 bearing 6202ZZ 
10 10000 none   122594 0000 mount bare ∅8
10 01111 $8.00 1249640000 mount bare ∅10
11 22222 none   002942 0000 dust cover rivet
12 10000 none   103014 0000 mount assy ∅8
12 01111 $12.0 12496310131 mount assy ∅10Ø

13 10000 none   102892 0000 drum, keyed hole
13 01110 $22.0 138449 0000 drum, splined hole
14 10000 none   0087520000 oil seal C 22-35-6
14 01111 $6.50 1315115905 oil seal 20-30-5

15 20000  none  006635 0000 circlip inner
16 11111 $3.00 1030620000 brake spring
17 11111 $$$.$ 010882 0000 brake cup rivet
18 11111 $$$.$ 103061 0000 brake shoe cup
19 11111 $$$.$ 103060 0000 spring anchor
20 10000  none  103104 0000 housing assy C      ∅35 w 14 15 17-19 21 28       1-speed type with 2 gears
20 01110 $$$.$ 141152 0000 housing assy CCC  ∅26 with 14 17-19 21 28       1-speed type with 2 gears
20 00100  none  131529 0000 housing assy var C ∅26 with 14 17-19 21 28(x3) variator type with 5 gears
20 00001  none  177176 0000 housing assy P       ∅26 with 14 17-19 21 28
       1-speed type with 2 gears

axles 123204 keyed, 132903 splined

21 10000 $8.00 10225816202 ball bearing 6202C3
21 01111 $8.00 1315095819 roller bearing HK2012
22 11111 $3.00 0088080000 roll pin  ∅2.5 x 14
23 10000  none  123204 0000 axle keyed 67-71
23 01111 $28.0 132903 0000 axle splined ’72-on
24 10000  none  121308 0000 axle pin
24 01111 $$$.$ 131503 0000 axle pin ∅7
25 10000  none  121311 0000 engage spring ∅20
25 01111 $4.00 131502 6613 engage spring ∅23

26 20000  none  121310 0000 washer ∅20.3
26 01111 $2.00 13151210277 washer ∅23.3/34 0.5
26 01111 $2.00 13151410283 washer ∅15.1/28 1.2
27 10000  none  121317 0000 big gear C9     ’67-69 ∅20 Z75s 
27 10000  none  121315 0000 big gear C7     ’70-71 ∅20 Z74s 
27 01111 $45.0 141155 0000 big gear CCCP ’72-83 ∅23 Z74s

rear pulley ∅94

trans gasket

27 00100  none  136952 0000 big gear var C  ’76-77 ∅23 Z46s
27 00110  none  174016 0000 big gear CCP    ’76-83 ∅23 Z76s
28 11111 $5.00 103613 5817 cup bearing BK0912
29 10000  none  102921 0000 pinion shaft C9       ’67-69 Z10s 10+75=85
29 11111 $25.0 103790 0000 pinion shaft CCCCP 70-83 Z11s 11+74=85
29 00100  none  114362 0000 pinion shaft var C   ’76-77 Z10s 10+23=33
29 001
11  none  174017 0000 pinion shaft CCP     76-83   Z9s   9+76=85
30 11111 $2.00 10350810284 washer ∅17.9/29 1.0
31 10000  none  103106 0000 cover assy C     M8-1.25 holes with 32-34, 69
1-speed type with 2 gears
31 01101 $$$.$ 131018 0000 cover assy CCP M10-1.5 holes with 32-34, 69 1-speed type with 2 gears
31 00010 $$$.$ 141153 0000 cover assy C     M10-1.5
holes with 32-34, 69 1-speed type with 2 gears
31 00100  none  131024 0000 cover assy C     M10-1.5
w/28(x2), 32-34, 69 variator type with 5 gears

In the 80’s brake shoe design changed but not fitment.
103046, 130240(1978), 130240(1985), 180207=414557

32 11111 $7.00 103689 5809 cup bearing BK1512
33 11111 $7.00 103696 5817 bearing HK1712
34 11111 $6.00 114469 5903 oil seal 17-25-4

35 11111 $6.00 103049 0000 pulley original used ∅94
35 11111 $8.00 103049 5559 pulley ∅92 (called 90 or 95)

35 00100  none  114848 5560 pulley ∅80 C 20mph
35 00000 $9.00 000000 5561 pulley ∅70 modified
36 11111 $0.30 013861 0000 plain washer, pulley ∅8
37 11111 $0.40 012540 0000 lock washer, pulley ∅8
38 11111 $0.50 020108 0000 plain nut, pulley M8-1.25
42 00100 $$$.$ 103237 0000 idle gear C Z23s 23+30=53
43 00100 $$$.$ 131554 0000 intermediate gear C Z30 Z9s

Gates 6266MC 10 x 960

Note: A 10mm smaller pulley needs a 10*π/2 = 15mm shorter belt, 20 smaller needs 30 shorter.

67 10000  old #  103046 0000 superseded to 130240
67 0111
old #  130240 0000 superseded to 180207
67 00001  old #  180207 0000 superseded to 414557
67 11111 $11.0 414557 0190 brake shoe        135 x 16

68 11111 $5.00 103105 9381 transmission cover gasket
69 11110 $4.00 006057 0000 vent cover disk inner ∅18.2 ’67-80
69 00011  none  192763 0000 vent cover disk ∅18 ’81-83
70 11111 $18.0 102905 0000 V-belt original     9.8 x 970 Pirelli 2931-102905-11
36 11111  none  102905a  00  V-belt for ∅90-95 10 x 960 Gates 6266MC
70 00000  none  00000000 00 V-belt for ∅80-8  9.5 x 940 Dayco 10A-940C
70 00000  none  000000000 0 V-belt for ∅70-75 10 x 930 Malossi 61-7224

seal set 5695 $20
2c-14 20-30-5
crank 15-24-5
2c-34 17-25-4
2a-54 16-22-3

cable clamp
assy 5312 $6

70 00000  none  0000000 000 V-belt for ∅70-709.5 x 925 Dayco 10A-925C
73 11111  none  103059 0000 brake shoe plate (comes with brake shoe)
74 11111 $3.00 103054 0000 engage lever spring
75 11111 $1.50 006705 0000 engage o-ring     ∅6 x 2 (10od)
75 10000 $1.50 006705 0000 disengage o-ring ∅6 x 2 (10od)
76 10000  none  103051 0000 disengage lever with post ∅9
76 01111 $3.00 131031 0000 disengage lever no post ∅6 hole
76a 1111 $3.00 131031a  000 post for disengage lever ∅5.8
77 11111 $2.00 103018 7210 engage button ∅8.7
78 10000  none  103453 0000 engage fork ∅9
78 01111 $7.00 131523 0000 engage fork ∅9
79 10000  none  0672330000 disengage washer ∅9
80 10000  none  0059660000 “E” clip ∅9
81 44444 $0.25 0069660000 lock washer ∅6

revision kit 10058K $35  with gasket 68,
seals 14 20-30-5 and 34 17-25-4, bearings
21 HK2012, 28 BK0912, 32 BK1512, 33 HK1712,
washers 26 23/34, 26 15/28, 30 18/29, 95 20/33

82 44444 $1.00 0310910000 hex bolt M6 x 25
83 11111 $1.00 0003970000 oil plug gasket ∅8
84 11111 $2.00 0311100000 oil plug M8 x 12 slot
85 11111 $7.00 124446 0000 brake lever
86 11111 $0.20 013877 0000 plain washer ∅7
87 11111 $2.50 005965 0000 circlip for lever ∅7

88 11111 $2.00 103112 0000 wire clip for shoe ∅8
89 11111 $0.80 014441 0000 bolt M7x20 cable clamp
90 11111 $3.50 102414 0000 spacer  ∅7  cable clamp
91 11111 $3.00 102413 0000 plate     for cable clamp
92 11111 $0.60 020207 0000 nut M7  for cable clamp
93  see below Table of Hubs, Gears, Specs and Apps
93 10000  none  122600 0000 hub assy C ’67-69 C9 with
93 10000  cont.  16, 20, 23, 26-31, 67-68, 74-88
93 10000  none  122610 0000 hub assy C ’70-71 with ” “
93 0111$130. 152420 0000 hub assy CCC ’72-80 with ” “
93 00100  none  152421 0000 hub assy 
C ’76-77 ” “+42,43
93 00010  none  174480 0000 hub assy C ’78-80 with ” “
93 00001  none  177186 0000 hub assy P ’80-83 with  ” “
93 0000 none  177191 0000 hub assy P ’80-83 with ” “

95 10000 $$.$$ 121309 0000 washer ∅15
95 01111 $2.50 13151310278 washer  ∅20.3/33 1.2
96 22222 $0.80 003057 0000 washer ∅7 cable clamp
101 1110 $6.00 004282 0000 plug, metal dome ∅14 ’69-80
101 000none  192762 0000 plug ’81-83
00 00111  none  048531 0000 brake inspect plug DOT ’76-83
00 11111 $6.00 154533 5312 cable clamp assy 89-92, 96

 

 


Vespa variator rollers

variator rollers

Vespa Variator Front Pulley

front variator

3. Piaggio Variable-Speed

3a. Piaggio Front Variator
(Variable Front Pulley)

7 parts manuals combined into 6 quantity columns:  C C B G S S
Parts only on 1967-71 are light green. 20mph parts are dark red.

C7V
C9V
’67-71
25

Ciao C7V
’76-77: 25
1978-80
25 mph

Bravo
’76-77: 25
1978-80
20 25 30

Grande
048, 068
1978-83
20 25 30

.

Si  up to 
2034225
1979-80
20 25 30

Si  after
2034225
1980-85
20 25 30

.

 

 

 

 

 

 

Vespa variator exploded view

Piaggio front variator exploded view

#   price  quantity
#   price  CCBGSS  part#   alt#  description

69 none   100000 103252 0000 variator nut M8 stepped

69 $7.00 011111 131331 0000 variator nut M8x7 hex24
70 none   100000 103251 0000 early tab washer

70 $5.00 011111 131332 0000 special tab washer
71 none   110010 114056 5533 outer plate CCS
71 $15.0 001101 124714 0000 outer plate BGS
72 $23.0 111111 114058 0000 outer roller guide
73 $20.0 111111 114057 0000 inner roller guide
74 $27.0 110000 104857 0000 outer pulley half CC
74 none   001011 130530 0000 outer pulley half BS
74 $22.0 000100 354244 0000 outer pulley half G
75 $24.0 111011 104864 5526 center tube CBS
75 $$.$$ 000100 174457 0000 center tube G
76 $12.0 111111 104862 5530 inner pulley half
77 $5.00 111111 103241 0000 spacer ∅12.8 ∅22 x 9.6
78 none   100000 114059 0000 variator assy C

78 none   010000 152729 0000 variator assy C
78 none   001001 124709 0000 variator assy BS
78 $$.$$ 000100 354245 0000 variator assy G
78 none   000010 158883 0000 variator S
97 $1.50 555555 104559 5529 roller cap (pair)
98 $1.30 555555 104560 5527 roller weight
98 $12.0 111111 10456 5527K roller set (of 5)

Variator outer pulley half versions: CC, BS, G

 

 

 

 

 

In 1995 the variator changed from 5 to 8 rollers.

 


3b. Piaggio Rear Pulley-Clutch and belt
(Variable Rear Pulley with Dual Auto Clutch)

Here 7 parts manuals are combined into 6 quantity columns.  C B G G S S
20 mph parts are dark red, but none in this group. Here 20, 25, 30 are the same.

.

Ciao C7V
’70-77: 25
1978-80
25 mph

Bravo
’76-77: 25
1978-80
20 25 30

Grande
048
1978-80
20 25 30

Grande
068
1981-83
20 25 30

Si   
SIV
1979-83
20 25 30

Si
SIV
1984-85
25 30

 

 

 

 

 

 

Piaggio rear clutch exploded view

 #  price  quantity
#   price  CBGGSS  part#   alt#   description

45 $$.$$ 111000 123146 0 000 clutch drum CBG
45 $44.0 000111 1903126603V clutch drum GSS
46  old #  222222 120870 0000  start shoes superseded
46 $18.0 222222 249816 5574  start shoe set(2)
47 $2.00 222222 1215375576A start shoe spring
48  old #  111110 121022 0000  superseded to 220441
48 $4.00 111111 220441 6604  push ring ∅5? holes
49 $2.50 111111 006426 6609  circlip outer 26×1.2
50 $6.00 111111 008771 5902  oil seal 18-24-4
51 $3.00 111111 016702 0 000 circlip inner 24×1.2
52  none  111111 120215 0 000 washer ∅19.0-22.7×0.8
53 $3.50 111111 120214 0 000 washer ∅10.3-22.4×1.2
54  none  100000 122870 0 000 clutch housing C
54 $$.$$ 011000 124777 0 000 clutch housing BG
54  none  010000 124871 0 000 clutch housing B ’78-80
54  none  000110 190315 0 000 clutch housing GS
54  none  000001 221111 0 000 clutch housing S
55  none  300000 104672 0 000 spring C ∅1.3-8.8-26.4
55 $3.00 033330 124783 0 000 spring    ∅1.2-7.9-32.4
55  soon  000003 2216005576fv spring S
∅1.2-7.9-22.0
56  old #  300000 114692 0 000 superseded to 288558
56 $48.0 300000 288558 0 000 run shoe set(3) C

56  old #  033330 124781 0 000 superseded to 288557
56 $52.0 033330 288557 0 000 run shoe set(3) BGGS
56  none  000003 221169 0 000 run shoes >2114702
57 $8.00 222222 103614 5830  bearing HK1312
58 $5.50 111111 008766 5954  oil seal 13 x 19 x 3
59 $12.0 111110 104662 0 000 contra spring   ∅3.5 44×80
59 $8.00 000001 221172 0 000 contra spring S∅3.8 45×80

variator clutch shoes, types C,  BGGS and S

60 $$.$$ 110010 130529 0 000 outer ½ pulley CB∅90
60 $$.$$ 001100 174456 0 000 outer ½ pulley GG  ∅90
60  none  00000220923 0 000 outer ½ pulley S   ∅100
61  old #  111110 103823 0000  superseded to 220493
61 $6.00 111110 220493 5531  inner ½ pulley    ∅90

61  none  000001 220924 5532  inner ½ pulley ∅100
62  old #  111110 103825 0 000 superseded to 220443
62 $2.50 111111 220443 5534  2-inner-tab washer
63 $7.00 111111 103826 0 000 nut M24-0.75 x 4.7 hex32
64 $0.50 111111 012540 0 000 star washer ∅8
65 $0.60 111111 020108 0 000 nut M8-1.25 x 8 hex13
66  none  100000 114720 0 000 rear clutch assy C
66 $$.$$ 0100
10 124775 0 000 rear clutch assy BS
66 $$.$$ 001100 160944 0 000 rear clutch assy GG

66  none  000001 221171 0 000 rear clutch assy
S
70 $15.0 100000 102906 0 000 belt C      13 x 975 Pirelli
70  none  011100 130937 0 000 belt BGG 13 x 1050 Pirelli
70 $15.0 011100 130937A  A39 belt
   12.7 x 1041 Gates
70  none  000011 122292 0 000 belt SS 13 x 1143? Pirelli

Gates A39

97  none  300000 013763 0 000 pivot washer C
98  none  300000 114690 0 000 pivot spring C
99  none  600000 013020 0 000 roll pin ∅3 x 22
100 none 222222 120262 0 000 start shoe cushion
102 none 066666 104469 0 000 run shoe side plug
103 none 033333 104468 0 000 run shoe side spring

 


variable speed rear hub

Vespa belt drive with variator

variable pulley drive

3c. Piaggio Rear Hub (variable speed)

This list covers US model mopeds with variators 1967-85.
There were many different gears, sizes and versions made.
That has made it difficult to get correct replacement parts.
It is hoped that this parts list will end the gears confusion.
T

Here 7 parts manuals have 7 quantity columns. C C B G G S S
Parts only on 1967-71 are light green. 20mph parts are dark red.

C7V
C9V
’67-71
25

Ciao C7V
’76-77: 25
1978-80
25 mph

Bravo
’76-77: 25
1978-80
20 25 30

Grande

1978-80
20 25 30

Grande
068
1981-83
20 25 30

Si
SIV
1979-83
20 25 30

Si
SIV
1984-85
25 30

 

 

 

 

 

 

Piaggio variator type rear hub

##  quantity
.# CCBGGSS  price   part#   alt#   description
01 1000000  none  0152270000 nut M12? to-212540
01 1000000  none  0152450000 nut M12? 212541-on
02 1000000  none  0163010000 washer to-212540
02 1000000  none  0163150000 washer 212541-on
03 1000000  none  1149360000 mount bolt plate
0
4 1111111 $25.0 1036310000 freewheel 18T Ocean
04 1111111 $15.0 103631a 000 freewheel 18T generic
07 1000000  none  102899 0000 keyed freewhl hub
07 0111111 $12.0 1315150000 screw-on freew. hub
08 1000000  none  102902 0000 dust cover big
08 0111111  none  124226 0000 dust cover
09 1111111 $8.00 1138170000 bearing 6202ZZ 
10 1000000  none  122594 0000 mount bare ∅8
10 0111111 $8.00 1249640000 mount bare ∅10
11 2222222  none  002942 0000 dust cover rivet
12 1000000  none  103014 0000 mount assy ∅8
12 0111111 $12.0 12496310131 mount assy ∅10
13 1000000  none  102892 0000 drum, keyed hole
13 0111000 $22.0 138449 0000 drum, splined hole
14 1000000  none  0087520000 oil seal 22-35-6
14 0111111 $6.50 1315115905
oil seal 20-30-5
15 2000000  none  006635 0000 circlip inner
16 1111111 $3.00 1030620000 brake spring
17 1111111 $$$.$ 010882 0000 brake cup rivet
18 1111111 $$$.$ 103061 0000 brake shoe cup
19 1111111 $$$.$ 103060 0000 spring anchor
21 1000000 $8.00 10225816202 ball bearing 6202 C3
21 0111111 $8.00 1315095819 roller bearing HK2012
22 1111111 $3.00 0088080000 roll pin  ∅2.5 x 14

covers: L 1-speed 131018, R variator 131021

23 1000000  none  123204 0000 axle keyed 67-71
23 0111111 $28.0 132903 0000 axle splined ’72-on
24 1000000  none  121308 0000 axle pin
24 0111111 $$$.$ 131503 0000 axle pin ∅7
25 1000000  none  121311 0000 engage spring ∅20
25 0111111 $4.00 131502 6613 engage spring    ∅23

26 2000000  none  121310 0000 washer  ∅20.3
26 0111111 $2.00 13151210277 washer ∅23.3/34 0.5
26 0111111 $2.00 13151410283 washer ∅15.1/28 1.2
28 5555555 $5.00 103613 5817 cup bearing BK0912
28a 000555 $2.00 17575110279 washer GSS∅10/18×1.0 for helical

32 1111111 $7.00 103689 5809 cup bearing BK1512
39
1000000  none  103397 0000 cover assy ∅8 holes
39
1111000 $$$.$ 131021 0000 cover assy CBG ∅10
39
0000111  none  175741 0000 cover assy GSS
40 100000  none  121319 0000 big gear C9  ∅20 Z?  gear pair  total

40 1000000  none  121319 0000 big gear C9  ∅20 Z46s  46+ 9 =55
40 1000000 $$.$$ 121318 0000 big gear C7  ∅20 Z45s  45+10=55
40 0111100 $$.$$ 131505 0000 big gear CBGG    Z45s  45+10=55
40 0001110  none  136952 0000 big gear BGG,S25Z46s  46+ 9 =55
40 0000010  none  136951 0000 big gear 
S,B ’78  Z45s  45+10=55
40 00000
10  none  165749 0000 big gear S           Z46s  46 + 9=55    s = straight, h = helical, b = straight big
40 0000001  none  17869710050 big gear S          Z37b  37+10=47

41 1111000 $$.$$ 103236 0000 pinion shaft CBZ11s 11+22=33  For any pair of gears the total teeth is constant.
41 0011000  none  124074 0000 pinion shaft BG    Z10s 10+23=33  If one gets bigger the other must get smaller.
41 0000110 $$.$$ 176409 0000 pinion shaft GS    Z11h 11+22=33  The pairs are #40+43b, #41+42, #42+43a.
41 0000111  
none  17644710051 pinion shaft GSSZ10h 10+23=33  Their total teeth are 55 (or 47), 33 and 52. 

housings: L 1-speed 141152, R variator 131529

42 1111000 $$$.$ 103237 0000 idle gear CBG      Z22s 22+30=52
42 0011000  none  124075 0000 idle gear BG        Z23s 23+29=52

42 0000110 $$$.$ 175749 0000 idle gear GS       Z22h 22+30=52
42 0000
11none  17644810056 idle gear GS      Z23h 23+29=52
42 000010none  17644810056 idle gear S

43 1000000  none  103238 0000 int gear C9V Z30s  9s
43
1000000  none  104092 0000 int gear C7V Z30s 10s
43 0
111000  $$$.$131248 0000 int gear CBG Z30s 10s
43 0011000  none  131925 0000 int gear B     Z??? ??s ’78-80 

43 00
11000  none  139993 0000 int gear BG   Z29s  9s
43 0000
100  none  175750 0000 int gear G     Z30h 10s
43 00000
10  none  176609 0000 int gear S     Z30h 10s
43 00000
10  none  176610 0000 int gear S25 Z30h  9s
43 00000
10  none  176612 0000 int gear S     Z29h  9s
43 0000001 $28.0 17869610053 
int gear S  Z29h 10b big teeth
44 1000000  none  103396 0000 housing   14 15 17-19 21 28(x3)
44 0
111000 $$$.$ 131529 0000 housing CBG 14 17-19 21 28(x3)
44 00
10000 $$$.$ 182042 0000 housing B ’78-80  ”   “
44 0000
111  none  175739 0000 housing GSS 14 17-19 21 28(x3)
57 1111111 $8.00 103614 5830 bearing HK1312
58 1111111 $6.00 017002 5955 oil seal 13 x 22 x 4
44a 222222 $4.00 000000 0000 housing centering dowel 

67 1000000  old #  103046 0000 superseded to 130240
67 011110
old #  130240 0000 superseded to 180207
67 000000
1  old #  180207 0000 superseded to 414557
67
1111111 $11.0 414557 0190 brake shoe 135 x 16

revision kit 10059-K $42 with gasket 68,
seals 14 20-30-5 and 58 13-22-4,
bearings 21 HK2012,
28(x5) BK0912,
32 BK1512, 57 HK1312, washers
28a(x5)10/18, 26 23/34, 26 15/28,
72 14/24, 95 20/33

68 1111111 $5.00 103105 9381 transmission cover gasket
69 1111111 $4.00 006057 0000 vent cover disk inner ∅18.2 ’67-80
69 0000111  none  192763 0000 vent cover disk 18 ’81-83

71 1100000 $5.00 0002670000 woodruff key early rounded
71 0111111 $2.00 0002675036 woodruff key late square
72 1111000 $7.50 1033860000 washer ∅13.7/28 x 1.0 use 175747
72 0000111 $2.00 17574710282 washer ∅13.9/24 x 1.0
73 1111111 $3.00 103059 0000 shoe plate (sold w/shoe)
74 1111111 $3.00 103054 0000 engage lever spring
75 1111111 $1.50 006705 0000 engage o-ring     ∅6 x 2 (10 od)
75 1000000 $1.50 006705 0000 disengage o-ring ∅6 x 2 (10 od)

76 1000000  none  103051 0000 disengage lever with post ∅9
76 0111111 $3.00 131031 0000 disengage lever no post ∅6 hole
76a 111111 $3.00 131031a  000 post for disengage lever ∅5.8
77 1111111 $2.00 103018 7210 engage button ∅8.7
78 1000000  none  103453 0000 engage fork ∅9
78 0111111 $7.00 131523 0000 engage fork ∅9
79 1000000  none  0672330000 disengage washer ∅9
80 1000000  none  0059660000 “E” clip ∅9
81 4444444 $0.25 0069660000 lock washer ∅6
82 4444444 $1.00 0310910000 hex bolt M6 x 25
83 1111111 $1.00 0003970000 oil plug gasket ∅8
84 1111111 $2.00 0311100000 oil plug M8 x 12 slot
85 1111111 $7.00 124446 0000 brake lever
86 1111111 $0.20 013877 0000 plain washer ∅7
87 1111111 $2.50 005965 0000 circlip for lever ∅7
88 1111111 $2.00 103112 0000 wire clip for shoe ∅8
89 1111111 $0.80 014441 0000 bolt M7x20
 cable clamp
90 1111111 $3.50 102414 0000 spacer  ∅7  cable clamp
91 1111111 $3.00 102413 0000 U-turn plate cable clamp
92 1111111 $0.60 020207 0000 nut M7 
for cable clamp
94  see below Table of Hubs, Gears, Specs and Apps

seal set 5695V $24
3c-14 20-30-5
crank 15-24-5
3b-50 18-24-4
3c-58 13-22-4
3b-58 13-19-3

cable clamp
assy 5312 $6

95 1000000  none  121309 0000 washer  ∅15
95 0111111 $2.50 13151310278 washer  ∅20.3/33 1.2
96 2222222 $0.80 003057 0000 washer ∅7 cable clamp
101 111100 $6.00 004282 0000 vent cover disk outer ∅14.2 ’69-80
101 000011  none  192762 0000 vent cover plug ’81-83
00 001111 none  048531 0000 brake inspect plug DOT ’76-83

00 1111111 $6.00 154533 5312 cable clamp assy 89-92, 96

 

3 x 5 keys: M-96, M96a, M86

M-96 early Vespa woodruff key was beveled at the bottom. M-96a was beveled on the top ends and superseded M-96 with the same part number 000267. M-86 generic can be ground to look like either kind.  

The bevel on top makes installation easier, since the key often slides out of the shaft groove instead of sliding into the wheel groove. 

 

 

 


    Table of Rear Hubs, Gear Sets, Specs and Apps

C7V
C9V
’67-71
25

Ciao C7V
’76-77: 25
1978-80
25 mph

Bravo
’76-77: 25
1978-80
20 25 30

Grande

1978-80
20 25 30

Grande
068
1981-83
20 25 30

Si
SIV
1979-83
20 25 30

Si
SIV
1984-85
25 30

Euro models

 

 

 

 

 

 

Gear pair rule: Different pairs of gears must have the same total number of teeth, because the distance between their centers is the same. Applying the rule, by doing the math, can detect mistakes and predict unknowns.

 none   122700 0000 var. hub pair total: 55 or 47 0 52 000 33    ⇐ must have same total
. price   122700 0000 var. hub,   gears#  40/43b  43a/42  42/41    RATIO     applications
=====Variator Hubs (5 Gears)====================================
 none   122710 0000 var hub keyed axle 45/10 x 30/22 x 22/11 = 12.27     70-71 Ciao C7V
 none   122700 0000 var hub keyed axle 46/09 x 30/22 x 22/11 = 13.94     ’67-69 Ciao C9V
=========================straight==
straight teeth=================
 none   000000 0865 var. hub gear set    44/11 x 30/22 x 22/11 = 10.91      ’00-00 Pinasco
 none   000000 0867 var. hub gear set    44/11 x 29/23 x 23/10 = 11.60      ’00-00 Pinasco

 none   152427 0000 var. hub assembly  45/10 x 30/22 x 22/11 = 12.27 US ’72-77 Ciao, Bravo 25
 none   152427 0000 var. hub assembly  45/10 x 30/22 x 22/11 = same US ’78-80 Ciao 25 30
 none   182042 0000 var. hub assembly  45/10 x 30/22 x 22/11 = same US ’78-80 Bravo 25 30
 none   00  87001DD var. hub gear set    45/10 x 30/22 x 22/11 = same      ’00-00 Olympia  

 $150. 152423 0000 var. hub assembly  46/09 x 30/22 x 22/11 = 13.94 US ’78-80 Grande 25 30
 none   174029 0000 var. hub assembly  46/09 x 29/23 x 23/10 = 14.82 US ’78-80 Bravo 20

 none   354045 0000 var. hub assembly 
46/09 x 29/23 x 23/10 = same US ’78-80 Grande 20
 none   152421 0000 1-sp hub assembly 46/09 x 29/23 x 23/10 = same US ’76-77 Ciao 20
 none   000000 0000 var. hub assembly  47/08 x 28/24 x 24/09 = 18.28 CH ’00-00 Si Postal
=========================straight==helical teeth==================
 none   000000 0866 var. hub gear set    44/11 x 30/22 x 22/11 = 10.91      ’00-00 Pinasco
 none   176618 0000 var. hub assembly  45/10 x 30/22 x 22/11 = 12.27 US ’79-83 Si 25 30
 none   176618?  000 var. hub assembly  45/10 x 30/22 x 22/11 = same CH ’74-80 Ciao

 none   176388 0000 var. hub assembly  45/10 x 30/22 x 22/11 = same US ’80-83 Grande 25 30
 none   000000 0000 var. hub assembly  45/10 x 29/23 x 23/10 = 13.05 IT  to-’86 Ciao
 none   177356 0000 var. hub assembly  46/09 x 30/22 x 22/11 = 13.94 US ’79-83 Si 25 

 none   176617 0000 var. hub assembly 
46/09 x 29/23 x 23/10 = 14.82 US ’79-83 Si 20
 none   000000 0000 var. hub assembly  46/09 x 29/23 x 23/10 = same CH ’74-80 

 none   000000 0000 var. hub assembly  47/08 x 30/22 x 22/11 = 16.02 CH ’74-80 Si
========================
big teeth==straight teeth================
 none   000   677021 var. hub gear set    36/11 x 30/22 x 22/11 =   8.93      ’00-00 Malossi
========================big teeth==helical teeth=================

 none   
000000 0000 var. hub assembly  36/11 x 29/23 x 23/10 =   9.49 IT  ’00-00 Grillo
 none   000000 0000 var. hub assembly  36/11 x 29/23 x 23/10 = same FR’00-00 Si

 none   000   10055K var. hub gear set    36/11 x 29/23 x 23/10 = same      ’00-00 CIF
 none   000000 0000 var. hub assembly  36/11 x 30/22 x 22/11 = 10.09 FR ’00-00 Grillo

 none   178698 0000 var. hub assembly 
37/10 x 29/23 x 23/10 = 10.73 US ’84-85 Si 25 30
 none   178698?  000 var. hub assembly  37/10 x 29/23 x 23/10 = same CH ’87-on    
 none   178698?  000 var. hub assembly  37/10 x 29/23 x 23/10 = same FR ’87-on 
 none   178698?  000 var. hub assembly  37/10 x 29/23 x 23/10 = same IT  ’87-on 
 none   000   10054K var. hub gear set    37/10 x 29/23 x 23/10 = same      ’00-00 CIF 
 none   000000 0000 var. hub assembly  38/09 x 30/22 x 22/11 = 11.52 IT  to-’86 Si
 none   000000 0000 var. hub assembly  38/09 x 30/22 x 22/11 = same CH 81-87

 none   000000 0000 var. hub assembly  38/09 x 29/23 x 23/10 = 12.24 IT  to-’86 Bravo

=========================================================

 none  
122700 0000 single speed  pair total:  85     ⇐ gear pairs must have this many teeth
. price 122700 0000 single speed h gears  #27/#29  xxxxxxxxx    RATIO     applications
=====1-speed Hubs (2 Gears)==================================
none  122610 0000 single speed hub assy  74 / 11 xxxxxxxxxx  =  6.73 US ’70-71 Ciao C7
none  122600 0000 single speed hub assy  75 / 10 xxxxxxxxxx  =  7.50 US ’67-69 Ciao C9
==========================straight teeth=======================

$130 152420 0000 single speed hub assy  74 / 11 xxxxxxxxxx  6.73 US ’72-80 Ciao 25, 30

none  177186 0000 single speed hub assy  74 / 11 xxxxxxxxxx  =
same US ’80-83 Ciao PX
none  174480 0000 single speed hub assy  76 / 09 xxxxxxxxxx  8.44 US ’78-80 Ciao 20

none  177191 0000 single speed hub assy  76 / 09 xxxxxxxxxx  =
same US ’80-83 Ciao PX 20
==========================helical teeth========================
none  03212020 00 single speed hub assy  75 / 10 xxxxxxxxxx  7.50 US ’95-99 Kinetic TFR
===========================================================

US model sources: These 7 parts manuals provided the US model applications and part numbers. Gear sizes are from actual parts, internet images, gears for sale, and from calculation. Gear size (teeth count) is never listed in the parts manuals.

Euro model sources: Part numbers, gear sizes and apps are from Moped Army, Vespa and Kinetic Transmissions and Euro models chart. Some of those were corrected with calculation. Gear set ratios and other data are also from treatland.

Superseded part number source: Modern Piaggio part number equivalents are from MSP in Germany. You can type any Piaggio part number and it tells you all of the equivalent part numbers, if there are any.

Speed versions: US models came in 20, 25 or 30mph versions, depending on what state. Many European countries had 30 or 45 km/h versions (18.6 or 27.9 mph). The lower speed models had less power, like half as much.

Lower is higher: A lower hub gearbox ratio means the rear wheel rpm is closer to the engine rpm, which is called higher gearing. Bikes with more powerful engines can benefit from lower ratios (higher gearing). But less powerful bikes cannot. That’s partly why restricted mopeds have higher gearbox ratios. 

Rear tire matters: The outer diameter of the rear tire affects the final ratio. So bikes with small diameter tires need lower gearbox ratios (higher gearing). The Grillo had 14″ rims, so it has a low gearbox ratio. Si and Bravo had 16″ rims, Ciao had 17″, early Ciao had 19″. The gearbox ratio is chosen accordingly.

Rear pulley matters: The rear variable pulley (90 mm) got bigger (100 mm) and the gearbox ratio (12.27) got smaller (10.73) in the mid-1980’s. Not long after that change, Piaggio pulled out of the US. After the mid-80’s Piaggio continued selling mopeds in Europe and worldwide until 2006, all with 100 mm pulleys. That is why most “Euro” pulleys are 100, and most “US” ones are 90. This matters for the final gearing. The bigger rear pulley (lower gearing) needs a smaller gearbox ratio (higher gearing) for the same engine and bike. 

Higher is not better: Higher gearing divides down the driving force, making worse performance uphill and accelerating. It does allow more speed downhill or with a tail wind, or with a more powerful engine. Generally, higher gearing is only better when the engine has increased power at the same rpm.