Sprockets

updated 2022-08

Contents:

A. Front sprockets

B. Rear sprockets

C. Sprocket Parts

D. Sprocket Info

 

 


A. Front sprockets

Engine sprockets are also listed with the engine parts.
Sprockets are new old stock originals unless noted.
Price: green is new, dark green is good used, low wear.

 



teeth price MMI# Minarelli#  Minarelli 

0
9T $12.0
4800 58.0220.0  1.0 hp V1  2.25-16
10T $20.0 4810 58.0221.0  1.5/2  V1  2.25-16
11T $15.0 4820 58.0222.0  2.0 hp V1  2.25-16
12T $30.0 4822 58.0203.0  1.5 hp C2  2.25-16
13T $25.0 4823 58.0204.0  2.0 hp C2  2.25-16
00T $2.00 4830 49.0641.0  washer ∅10 ∅22 x 0.8
00T $2.00 4840 49.0323.0  nut M10-1.25 x 6 hex17

 



teeth  price   Morini#  Morini .
10T $17.0 23-2550  flat-sided thick for M101
11T $15.0 23-2551  flat-sided thick for M101
11T $15.0
23-2508  flat-sided thin S5K, S5K2
12T $15.0 23-2506  tapered, keyed  MO1, MO2

13T $15.0
23-2501  tapered, keyed  MO1, MO2
13T none  23-2534  flat-sided thick for M1
13T $15.0 23-2561  flat-sided thick for M1 late
14T none  23-2552  flat-sided thick for M1 late
14T $15.0 23-2580  splined thick for S6?
00T $2.00 25-4002  washer ∅12 ∅20? x 1?
00T $10.0 13-1002  nut M12-1.25 x 6 hex17

 



teeth  price   Motobecane# 
 Motobecane
11T $15-00
17352 for 40, 50 25mph, 50V 25, 30
12T none  18939 for model 40, 50 20mph
13T $00-00 20732 for model 40, 50 30mph

 



teeth  price   Puch# 00000 Puch

11T $00-00 000.050.1316 for 1.0 hp E50
13T $20-10 349.113.1132 for 1.0 hp E50
14T $20-10 349.113.1142 for 1.5 hp E50
15T none  349.113.1152 for 1.5 hp E50
16T $20-10 349.113.1162 for 1.5/2.0 E50
18T $20-10 349.113.1182 for 2.0 hp ZA50

Some original Puch sprockets still have the polyurethane covering,
but it will soon crack and fall off, because it has become brittle.

 



Tomos front for thin tire models, rear for Arrow/Racing
teeth price  Tomos#  ID looseness (mm)
18T none 
000000 28.?  0.4? flat replica
18T $65.0 
000000 27.8 0.0  flat modified, orig. center

24T none  236544 27.8 0.0  flat original for Arrow rear
25T $13.0 000000 28.3 0.5  flat replica chrome
26T $25.0 209078 27.8 0.0  flat original for thin rear tire
26T $13.0 000000 28.3 0.5  flat replica K Star
27T $13.0 000000 28.2 0.4  flat replica black
Tomos front for wide tire models
teeth price  Tomos#  ID looseness (mm)

26T $50.0
230788 28.0 0.2  dished original for wide rear tire
26T none  000000 28.?  0.4? dished replica
27T none  000000 28.?  0.4? dished replica

Tomos original sprockets made before 2008 said TOMOS and fit properly. The center splined hole fits tight and has no wiggle room. Most aftermarket sprockets, and ones made from 2008 on, do not fit properly. The center splined hole is bigger than it needs to be. 

When the center hole is too big, the sprocket does not stay centered. Instead, it shifts back and forth every revolution. That make the chain pulsate, where it gets tighter and looser every revolution of the front sprocket. It feels like always being on a bumpy road. It leads to chain wear and sometimes damage to the driveshaft splines.

 

 

 


B. Rear sprockets

Sprockets in the same family have the same centering hole,
and the same bolt hole circle.  

Families 1 to 12 sprockets are on the opposite side as the brake.
They are for mopeds and mini-cycles with a single drive chain.

 

1.  Tomos lip x 62

Sprockets in this family are kept centered by the
lip that surrounds the small 17 mm center hole.

17.0 centering hole diameter, 1-chain aluminum hub
62    bolt holes diameter, M7 bolts, 415 chain
teeth
dish

⇓ holes ⇓ price  link  part#  engine  models  
∅32 bearing


22T  4  0 $33.0 Tomos 209261 A3 SP  ’75-91 Bullet 30mph
22T  4  0 $15.0 Tomos 209261 good-used low-wear

24T  4  0 $27.0 Tomos 213256 A3 GM ’76-91 Bullet 25mph

26T  4  0 none  Tomos 211847 A3 SL  ’76-89 Bullet 20mph

31T  4  0 $20.0 Tomos for trike?

 

2.  Grimeca 38.0 x 60

38.0 centering hole diameter, 1-chain hub or wheel
60    bolt holes diameter, M7 bolts, 415 chain
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅32 bearing


22T  5  0 none  generic black from treatland

24T  5  0 $25.0 Tomos 232880 good-used A35 Revival ’02 
24T  5  0 none  Grimeca steel hub 118 mm drum

24T  5  0 none  Grimeca 3 Razze 16″ cast alum. wheels

37T  5  0 none Grimeca 3 Razze 16″ from treatland

 

3.  Grimeca 39.5 x 62

39.5 centering hole diameter, 1-chain hub or wheel
62    bolt holes diameter, M7 bolts, 415 chain
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅32 bearing


22T 4  0 $34.0 Tomos 217089 A3 SP ’77-86 Silver Bullet 30
22T
4  0 $17.0 good-used, low wear

24T 4  0 none  Tomos 217093 A3 GM ’77-86 Silver Bullet 25

26T 4  0 none  Tomos 000000 A3 SL ’77-86 Silver Bullet 20

27T 4  0 $24.0 Tomos 230187 A35 MC36

28T 4  0 $34.0 Malaguti H123/28 MO1 13/28T 30mph
28T 4  0 none  Pacer 230  123/28 MO1 12/28T 25mph
32T 4  0 $25.0 good-used, low-wear

30T 4  0 none  Motobecane H123/30 MO1 Sebring 17″

32T 4  0 $34.0 Malaguti H123/32 MO1 12/32T 25mph
32T 4  0 none  Garelli 500451.4.227 Gar H1 30mph

33T 4  0 $24.0 generic  black

34T 4  0 none  Demm 4.7535.1560  Demm  Smily

35T 4  0 none  generic  black

36T 4  0 none  Garelli 503551.4.227 Gar H1 25mph

38T 4  0 $32.0 Gitane 71052144      Min V1 .
38T 4  0 $19.0 good-used, low-wear
38T 4  0 $24.0 generic  black

40T 4  0 none  Malaguti H123/40   MO1 12/40T 20mph
40T 4  0 none  Pacer 230A H123/40 MO1 12/40 20mph

42T 4  0 $40.0 Cimatti 2670         Min V1 .
42T 4  0 none  Garelli 503701.4.227 Gar H1 20mph

44T 4  0 $40.0 Motron 0050         Min V1 .
44T 4  0 none  generic  black

45T 4  0 $32.0 Benelli 71.33.38.00  Ben G2   G2
45T 4  0 $27.0 Fantic black plastic

 

4.  Trac 40.0 x 62

40.0 centering hole diameter, 1-chain hub or wheel
62    bolt holes diameter, M8 bolts, 420 or 415 chain 
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅32 bearing


39T 4  0 $24.0 Trac 41201-M56-8930 used, M56 415 chain, spoke wheel

42T 4  0 $32.0 Trac 41201-CL1-000  for Daelim 420 chain, spoke wheel

 

5.  Tomos 40.5 x 60

40.5 centering hole diameter, 1-chain hub 
60    bolt holes diameter, M7 bolts, 415 chain 
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models   ∅32 bearing


24T 5  0 none  Tomos 243060  A35  MC50 Jr
24T 5  0 none  243060 modified see 42.5 x 60 4-hole

28T 5  0 none  Tomos 243061  A35  MC50 Sr

 

6.  Indian 42.0 x 62

42.0 centering hole diameter, 1-chain hub or wheel
62    bolt holes diameter, M8 bolts, 415 chain 
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅32 bearing


28T 4  8 none  Indian W213-28-50 Mira wheel

30T 4  8 $43.0 Indian W213-00-50 spoke wheel

40T 4  0 $34.0 unidentified

 

7. Grimeca 42.5 x 66

42.5 centering hole diameter, 1-chain hub or wheel
66    bolt holes diameter, M7 bolts, 415 chain 
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅35 bearing


20T 4  0 $9.00 generic 633084 too small, must modify

22T 4  0 $20.0 generic for Tomos with non-Tomos wheels

28T 4  0 none  Malaguti H123/28M Morini MO1 13/28T 30mph
28T 0 none  Pacer 247 H23/28M Morini MO1 12/28T 25mph

30T 4  0 $30.0 Garelli 000966.4.234 Garelli G2,V2 Gulp, VIP
30T
4  8 none  Bernardi H123/30B  Morini MO1 .

32T 4  0 none  Malaguti H123/32M Morini MO1 12/32T 25mph
32T 4  0 none  Garelli 500601.4.299 Garelli H1 mags 30mph
32T
4  8 none  Bernardi H123/30B  Morini MO1 .

36T 4  0 none  Garelli 506873.4.234 Garelli H1 mags 25mph
36T 4  8 none  Bernardi H123/36B  Morini MO1 .

39T 4  0 none  Batavus H123/39M Regency M56 w/mags
39T 4  0 $38.0 Trac 41201-M56-8900 used, M56 w/mags
39T 4  0 $29.0 Trac 41201-M56-8900 Eagle M56 w/mags

40T 4  0 none  Malaguti H123/40M Morini MO1 12/40T 20mph
40T 4  0 none  Pacer 247A  23/40M Morini MO1 12/40T 20mph
40T 4  0 none  Hercules 0890 222 000 Sachs 505 .
40T 4  8 none  Bernardi H123/40B  Morini MO1 .

42T 4  0 none  Garelli 501501.4.234 Garelli H1 mags 20mph
42T 4  0 $29.0 Trac 41201-HA1-000 Daelim mags #420 M6 holes
42T 4  0 $29.0 Trac 41201-HA1-000 Daelim mags #420 M7 holes

44T 4  0 $30.0 Motron 0050B used Minarelli V1 w/mags

46T 4  0 none  Hercules 0890 239 000 Sachs 505 .

50T 4  0 none  Hercules 0890 223 000 Sachs 505 .
50T 4  0 none  Hercules 0890 239 001 Sachs 505 .

 

8. Tomos 42.5 x 60

42.5 centering hole diameter, 1-chain hub or wheel
60    bolt holes diameter, M7 bolts, 415 chain
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅32 bearing


20T 4  0 $9.00 633084 aftermarket too small, must grind

22T 4  0 $27.0 Tomos 222586 A3, A35   ’86-06 2.25-16 30mph
22T 4  0  $00.0 Tomo    A55 derestricted ’07-18 2.25-16 35mph

22T 4  0 $20.0 222586 aftermarket  .

24T 4  0 $25.0 Tomos 227361 A3, A35   ’86-91 2.25-16 25mph
24T 4  0 $00.0 Tomos    227361 A3/A35 ’04-06 3.25-16 30mph
24T 4  0 $00.0 Tomo    A55 derestricted ’06-13 3.25-16 35mph
24T 5+4 $29.0 243060 modified to replace 227361

28T 4  0 $10.0 Tomos 223119 A55 orig. ’07-18 2.25-16 30mph

31T 4  0 $14.0 Tomos 227863 A55 orig. ’06-13 3.25-16 30mph

 

 

9.  General 44.0 x 62

44 centering hole diameter, 1-chain hub 
62    bolt holes diameter, M8 bolts, 415 chain 
teeth
dish
⇓ holes ⇓ price  link  part#
    ∅90 small hub models


40T 3  0 $32.0 General 2150-5482 for Sachs 505/1A

44T 3  0 39-29 General 1150-5482 for Minarelli V1 

50T 3  0 none  General 2150-5483 for Sachs 505/1B

⇓ holes ⇓ price  link  part#    ∅110 big hub models


40T 4  0 $32.0 General 1150-5482 for Sachs 505/1A

 

10. Grimeca 45.5 x 66

45.5 centering hole diameter, 1-chain hub or wheel
66    bolt holes diameter, M7 bolts, 420 chain
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   ∅35 bearing


42T 4  0 $28.0 Columbia 713-0227 used, worn Sachs 505 25/30mph

48T 4  0 $32.0 Columbia 713-0228 used, low-wear Sachs 505 20mph

Columbia sprockets do not have lightening holes.

 

11. Derbi 53.0 x 65

53.0 centering hole diameter, 1-chain hub or wheel
65    bolt holes diameter, M8 bolts, 415 chain
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   


30T 4  0 $38.0 Derbi 000.821.3030 Variant SL, SLE, TT

33T 4  0 none  Derbi 0F0.131.0031 Variant Sport

42T 4  0 $36.0 Derbi 000.791.3030 C-5 Diablo, RD50

 

12.  Trac 62.0 x 80

62.0 centering hole diameter, 1-chain hub or wheel
80    bolt holes diameter, M8 bolts, 420 chain
teeth
dish
⇓ holes ⇓ price  link  part#  engine  models
   


44T 4  0 $30.0 unidentified, maybe Honda

 

 

 



Families 13 to 18 sprockets are on the same side as the brake.
The drum brake is in the center of the sprocket,
for 2-chain hubs with both motor and pedal chains

 

13. Leleu 81 x 93

81  centering hole diameter, 2-chain aluminum hub
93  bolt holes diameter, M6 bolts, 415 chain

teeth pat dish price  link  part#  engine  models 70 brake drum


35T  4     10  none  Motobecane 23043 model 7 30mph

39T  4     10  none  Motobecane 54183 model 7 20, 25mph

42T  5p   10  none  Peugeot 68855 black 102 U3 30mph

48T  6p     $39.0 Batavus 44.420 M48 VA, HS50, Starflite 20, 30

50T  6p     $25.0 Batavus 44.379 M48 VA, HS50, Starflite 25 mph
50T  6p     8  $12.0 good-used, low-wear

50T  5p   10  $30.0 Peugeot 64150 black 102 U2 25mph

 

14. Angel 92 x 112

92 centering hole diameter, 1-chain hub 
112    bolt holes diameter, M6 bolts, 420 chain
teeth pat dish price  link  part#  engine  models 80 brake drum


40T   4    14  $26.0  Taiwan

44T   4   5.5  $25.0  Taiwan 

50T   4   8.0  $25.0 Taiwan (Angel)

 

15. Grimeca 94 x 107  

This sprocket family is for Grimeca 90 mm 2-chain hubs
with internal shield brake plates, instead of external.

94  centering hole diameter, 2-chain hub or wheel
107  bolt holes diameter, M6 bolts, 415 chain

teeth pat dish price  link  part#  engine  models 90 brake drum


38T  4d     none  KTM Foxi 1210.060.000 Sachs 504 spoke wheel
38T   5      0  none  KTM Foxi 0000.000.000 Sachs 504 mag wheel

40T  4d     none  generic black   from treatland
40T  4d   14  none  Kynast Flying Dutchman Sachs 504  spoke whl

45T  4d     0  $55.0 Hercules 0890 215 000 Sachs 504 25, 30 mph
45T  4d     0  $35.0 good-used

50T  4d     0  none  Hercules 0890 211 000 Sachs 504 20 mph
50T  4d     0  $28.0 good-used, low-wear

 

16. Leleu 94 x 104

94  centering hole diameter, 2-chain hub or wheel
104  bolt holes diameter, M6 bolts, 415 chain

teeth pat dish price  link  part#  engine  models  80 brake drum


36T  5p    12  none  Peugeot 51608 103L2 U3=30mph
36T 5p6p 12  $25.0 good-used, not worn
36T  6p    12  none  Sparta 055029 Sachs 504 25/30mph
36T  6p   7.5  $16.0 generic black

36T  6p    12  $40.0 Kreidler 265.02.11 MP-9, MP19 Flory 30/25

38T  6p   7.5  $24.0 generic chrome

39T  5p    12  none  Batavus 44.521 M56 Regency w/spoke wheel

40T  5p    12  $35.0 Peugeot 40947 103L2 U2=25mph
40T 5p6p 12  $25.0 generic vintage
40T  6p   7.5  none  Puch 349.141.0401 Puch ZA50 spoke wheels
40T  6p   7.5  $20.0 generic light grey
40T 
6p   7.5  $24.0 generic chrome
40T  6p   7.5  $15.0 generic used

44T  6p    10  $45.0 Motobecane 20090 ’74-80 40, 50 25/30
44T  6p    10  $30.0 good-used, low wear
44T  6p    12  $35.0 Kreidler 000.00.00 MP-9, MP19 Flory 20mph

45T  6p   7.5  none  Puch 349.141.0451 Puch E50 spoke wheels
45T  6p   7.5  $30.0 good-used low wear
45T  6p   7.5  $15.0 good-used 

48T  5p    12  $35.0 Peugeot 48795 103LS U1, 103L2 U1 20mph
48T 5p6p 12  $25.0 generic vintage, tight fit, needs grinding
48T 5p6p 12  $25.0 generic vintage
48T  6p    10  $30.0 Motobecane 53873 ’76-78 40, 50 20mph
48T  6p    12  none  Sparta 055029 Sachs 504 20mph models

52T  5p    12  $38.0 Peugeot 51608 103LVS U2, U3  103SP U3
52T 5p6p 12  $16.0 generic black

54T  6p    10  $45.0 Motobecane 20093 ’74-80 50V 25/30
54T  6p    10  $30.0 good-used, low wear

56T  5p    12  $35.0 Peugeot 54443 103SP U2=25mph
56T  5p    12  none  good-used, low wear

59T  5p    12  $50.0 Peugeot 61443 black 103SPR U2, U3

 

17. Grimeca 98 x 115

98  centering hole diameter, 2-chain hub or wheel
115  bolt holes diameter, M6 bolts, 415 chain

teeth pat dish price  link  part#  engine  models   90 brake drum


40T   4   7.5  $35.0 Puch 349.141.7401 ZA50 snowflake wheels

42T   5   7.5  none  generic replacement from treatland

45T   4   7.5  $35.0 Puch 349.141.7451  E50  snowflake wheels
45T   4   7.5  $20.0 good-used, low wear
45T   5   7.5 
none  Puch Korado 5-hole E50  from treatland

51T   5   7.5  none  Puch Korado 5-hole E50  from treatland

 

18. Columbia 115 x 125

115  centering hole diameter, 2-chain hub or wheel
125?  bolt holes diameter, M6 bolts, 415 chain

teeth pat dish price  link  part#  engine  models   105 brake drum


42T   4   7.5  none  Columbia 713-0244  Sachs 25/30mph

48T   4   7.5  none  Columbia 713-0245  Sachs 20 mph

57T   4   7.5  none  Columbia 713-0246  Solo 20/25/30

 

 

 



C. Sprocket Parts

Part# colors: Italian (MMI), Tomos, Taiwan, Puch .

 

 #  holes price  holes   bolt 0  Locking Plates .
 #  holes price   c-c   pattern   part#  .
21 2-M8 $4.00 43.8 ∅62 x 4 1150-5481 Gen/Trac 110/90
00 0-M0 $0.00 for 4. 40 x 62, 6. 42 x 62, 9. 44 x 62 (4-hole)
22 2-M6 $5.50 81.3 ∅115×4 349.141.7181 Puch   90 mag
00 0-M0 $0.00 for 17. 98 x 115 “snowflake mag” 2-chain
31 3-M8 $5.00 53.7 ∅62 x 3 1150-5478 General 90 hub
00 0-M0 $0.00 for 9. 44 x 62 (3-hole)
41 4-M7 $4.00 42.4 ∅60 x 4 222583 Tomos 105/90 hub/mag
00 0-M0 $0.00 for 5. 40.5 x 60, 8. 42.5 x 60
42 4-M7 $3.00 43.8 ∅62 x 4 H122     Italian/Tomos  90 hub
00 0-M0 $0.00 for 1. lip x 62, 3. 39.5 x 62
43 4-M7 $4.00 46.7 ∅66 x 4 H122M  Italian 105/90 hub/mag
00 0-M0 $0.00 for 7. 42.5 x 66, 10. 46.5 x 66

hex head  price 00 part000# chains   Sprocket Bolts .
mm size  price  00  part# 00000  type drum type .
M6 x 16 /00 $0.50 
000000000000 2 alloy 70/80 hub

M6 x 20 /00 $0.50  000000000000 2 steel  90 hub
M7 x 18 /00 $1.80  H124 0000000  1 steel  90 hub
M7 x 20 /00 $0.80  H124alt
M7 x 22 /00 $1.70  025208 H124T  1 alloy  90 hub
M7 x 25 /00 $0.80  02630400000  1 alloy105 hub/mag
M7 x 30 /00 $0.80  025210 H124M 1 alloy  90 mag
M7 x 35 /00 $1.00  02630500000  1 alloy105 wide hub
M8 x 35/34 $0.60  611-0803400o 1 alloy  90 hub
M8 x 40/43 $0.60  611-0804300o 1 alloy110 hub

mm size  hex  price   part#       Sprocket Nuts .
M6 x 5 hex10 $0.40  000000  regular
M7 x 6 hex11 $0.60  000000  regular

M7 x 7 hex11 $1.00  H124A   tall nut
M8 x 7 hex13 $0.60  000000  regular

 

 

 



D. Sprocket Info

How to tell the chain pitch by measuring the sprocket

1. The teeth are counted. That gives n.

2. A round tapered tool like a punch or chopstick is placed in the sprocket tooth valley, and slid back and forth until it matches the half circle at the bottom of the valley. The tapered tool is measured where it matched the sprocket tooth valley. That gives dr.

3. If the tooth count n is an even number, the sprocket minumum diameter is measured directly with a caliper. If the tooth count n is an odd number, the sprocket minimum diameter is estimated. That gives dm.

4. Chain pitch is then calculated.      pitch = (dr+dm)*sin(180/n)

 

 

How to calculate the holes diameter 

When the hole count n is an odd number, the holes diameter d cannot be measured directly. d must be calculated from the measured hole spacing s.   

d = s/sin(180/n)

 

 

How to tell if the teeth are worn

The valleys in between the teeth are U shaped. On a new sprocket both sides of the U are the same. As the sprocket wears, the side of the U that the chain pulls on becomes worn were the roller contacts it.

 

 

Trac Sprockets and Chains

82-84 M56 17T Eagle, Hawk              Grimeca mag 16
41201-M56-8900 sprocket 42.5 x 62 39T 4-M7
40530-M56-8900 chain #415 98L 

82-84 M56 17T Clipper, Eagle, Hawk spoke wheel 16
41201-M56-8930 sprocket 40.0 x 62 39T 4-M8
40530-M56-8900 chain #415 98L 

84-89 Daelim 12T Hawk, Image        Grimeca mag 16
41201-HA1-000 sprocket 42.5 x 66 42T 4-M6x25  
40530-HA1-000 chain #420 96L
40531-005-890 master link

84-89 Daelim 12T Clipper, Escot      spoke wheel 16
41201-CL1-000 sprocket 40.0 x 62 42T 4-M8   
40530-HA1-000 chain #420 96L
40531-005-890 master link

84-89 Daelim 12T Liberty, Olympic  spoke big hub 17
41201-005-890 sprocket 00.0 x 00 44T 4-M8x35   
40530-005-890 chain #420 00L
40531-005-890 master link

 

40.0 x 62 42T 4-M8  41201-CL1-8930?  #420  spoke wheel
chain #420