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Transmission

(684 products)
50cc Bike Gearboxes Chains and Sprockets Gear Drives Transmission Accessories
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Product type
Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Clutch accessories Clutch kit Crankshaft accessories Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Kickstarter accessories Chain rear sprocket Screws other Transmission Transmission accessories Transmission gear
Brand
AFAM Avoc Beta Bidalot Conti Derbi Doppler IGM Jasil KRM Moose Racing MotoForce MotoForce Racing Piaggio Polisport Rieju Stage6 Standard Parts STR8 Top Performances Voca Racing Yamaha
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Standard Parts
Rear Sprocket steel 71 teeth - 420 Rieju MRT
Article no.: MF89.00329

Rear Sprocket steel 71 teeth - 420 Rieju MRT

29,00 €
In stock
Standard Parts
Rear Sprocket steel 62 teeth - 420 Rieju MRT
Article no.: MF89.00328

Rear Sprocket steel 62 teeth - 420 Rieju MRT

29,00 €
In stock
Standard Parts
Rear Sprocket steel 60 teeth - 420 Rieju MRT
Article no.: MF89.00327

Rear Sprocket steel 60 teeth - 420 Rieju MRT

29,00 €
In stock
Str8
Front Sprocket 420 red Derbi
Article no.: STR-71REDDERBI

Front Sprocket 420 red Derbi

10,50 €
In stock
Str8
Front Sprocket 420 red Minarelli AM6
Article no.: STR-71REDAM6

Front Sprocket 420 red Minarelli AM6

from 10,50 €
In stock
Str8
Front Sprocket 420 orange Minarelli AM6
Article no.: STR-71ORANGEAM6

Front Sprocket 420 orange Minarelli AM6

from 9,10 €
In stock
Str8
Front Sprocket 420 blue Derbi
Article no.: STR-71BLUEDERBI

Front Sprocket 420 blue Derbi

10,50 €
In stock
Str8
Front Sprocket 420 blue Minarelli AM6
Article no.: STR-71BLUEAM6

Front Sprocket 420 blue Minarelli AM6

from 8,80 €
In stock
Str8
Rear Sprocket 53 teeth - 420 orange Rieju MRT
Article no.: STR-701.53/OR

Rear Sprocket 53 teeth - 420 orange Rieju MRT

28,50 €
In stock
Str8
Rear Sprocket 53 teeth - 420 blue Rieju MRT
Article no.: STR-701.53/BL

Rear Sprocket 53 teeth - 420 blue Rieju MRT

28,50 €
In stock
Standard Parts
Rear Sprocket steel 50 teeth - 420 Aprilia SX 50
Article no.: MF89.00342

Rear Sprocket steel 50 teeth - 420 Aprilia SX 50

35,50 €
In stock
Standard Parts
Rear Sprocket steel 48 teeth - 420 Aprilia SX 50
Article no.: MF89.00341

Rear Sprocket steel 48 teeth - 420 Aprilia SX 50

32,00 €
In stock
Standard Parts
Rear Sprocket steel 53 teeth - 420 Rieju MRT
Article no.: MF89.00324

Rear Sprocket steel 53 teeth - 420 Rieju MRT

22,50 €
In stock
Standard Parts
Rear Sprocket steel 52 teeth - 420 Peugeot / Rieju
Article no.: MF89.00310

Rear Sprocket steel 52 teeth - 420 Peugeot / Rieju

22,50 €
In stock
IGM
Rear Sprocket steel 46 teeth - 428 IGM Rieju MRT
Article no.: IGM87871

Rear Sprocket steel 46 teeth - 428 IGM Rieju MRT

19,50 €
In stock
IGM
Rear Sprocket steel 44 teeth - 420 IGM Rieju MRT
Article no.: IGM85140

Rear Sprocket steel 44 teeth - 420 IGM Rieju MRT

19,50 €
In stock
IGM
Rear Sprocket steel 50 teeth - 420 IGM Rieju MRT
Article no.: IGM5681

Rear Sprocket steel 50 teeth - 420 IGM Rieju MRT

15,00 €
In stock
Sale
IGM
Rear Sprocket steel 46 teeth - 420 IGM Rieju MRT
Article no.: IGM5679

Rear Sprocket steel 46 teeth - 420 IGM Rieju MRT

20,50 €
In stock
IGM
Rear Sprocket steel 65 teeth - 420 IGM Rieju MRT
Article no.: IGM13101205

Rear Sprocket steel 65 teeth - 420 IGM Rieju MRT

17,00 €
In stock
AFAM
Chain Kit AFAM 12x51 - 420 Beta RR after 2005
Article no.: AFAM500353

Chain Kit AFAM 12x51 - 420 Beta RR after 2005

57,50 €
In stock
AFAM
Chain Kit AFAM 12x52 - 420 Rieju MRT / Yamaha DT
Article no.: AFAM467442

Chain Kit AFAM 12x52 - 420 Rieju MRT / Yamaha DT

56,50 €
In stock
AFAM
Chain Kit AFAM Z=12x48 420 Rieju RR / Spike
Article no.: EKP-4323

Chain Kit AFAM Z=12x48 420 Rieju RR / Spike

59,50 €
In stock
Standard Parts
Chain Tensioner complete Motor Hispania Furia Cross
Article no.: SP-0016057

Chain Tensioner complete Motor Hispania Furia Cross

13,50 €
In stock
Top Performances
Top Performances Kickstart Shaft Top Performances Minarelli AM6
Article no.: TAM00030
1

Top Performances Kickstart Shaft Top Performances Minarelli AM6

49,00 €
In stock
Standard Parts
Reinforced Chain 134 links size=420
Article no.: CGN475169

Reinforced Chain 134 links size=420

21,00 €
In stock
Derbi
Chain Tensioner (x1) Derbi DRD Racing
Article no.: OE-DE00H01304811

Chain Tensioner (x1) Derbi DRD Racing

49,50 €
In stock
Derbi
Chain Tensioner Derbi Senda DRD X-Treme after 2010
Article no.: OE-DE00H01305171

Chain Tensioner Derbi Senda DRD X-Treme after 2010

16,50 €
In stock
Derbi
Chain Guard Derbi Senda DRD Pro / X-Treme
Article no.: OE-DE00H01508181

Chain Guard Derbi Senda DRD Pro / X-Treme

35,00 €
In stock
Polisport
Roller for chain tensioner Polisport d.42mm black
Article no.: EKP-143574

Roller for chain tensioner Polisport d.42mm black

14,00 €
In stock
Derbi
Swingarm Slider Derbi Senda / Gilera SMT
Article no.: OE-DE00H01803331

Swingarm Slider Derbi Senda / Gilera SMT

25,50 €
In stock
Standard Parts
Gearbox / Gear Drive OEM quality Minarelli AM6
Article no.: EKP-138731

Gearbox / Gear Drive OEM quality Minarelli AM6

177,00 €
In stock
Doppler
Rear Sprocket 53 teeth / 428 chain Doppler CNC aluminium red Beta RR
Article no.: CGN496464
1

Rear Sprocket 53 teeth / 428 chain Doppler CNC aluminium red Beta RR

54,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC red Sherco Enduro 50
Article no.: CGN496462
2

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC red Sherco Enduro 50

64,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Aprilia SX 50
Article no.: CGN492590

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Aprilia SX 50

54,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Rieju MRT
Article no.: CGN491212

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Rieju MRT

54,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC gold Rieju MRT
Article no.: CGN491209

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC gold Rieju MRT

54,50 €
In stock
Standard Parts
Sprocket Retainer Plate Derbi D50B0 after 2006 (24mm hole spacing)
Article no.: 34426
1

Sprocket Retainer Plate Derbi D50B0 after 2006 (24mm hole spacing)

2,40 €
In stock
Standard Parts
Chain Pulley Set Aprilia / CPI / Derbi / Gilera
Article no.: 34935

Chain Pulley Set Aprilia / CPI / Derbi / Gilera

8,80 €
In stock
Standard Parts
Rear Sprocket 53 teeth 420 Derbi Derbi DRD Pro
Article no.: 34937

Rear Sprocket 53 teeth 420 Derbi Derbi DRD Pro

25,00 €
In stock
Rieju
Gear Shift Shaft original spare part Rieju RS2
Article no.: OE-RIE2407000

Gear Shift Shaft original spare part Rieju RS2

6,80 €
In stock
AFAM
Rear Sprocket AFAM 51 teeth - 420 Beta RR / Caballero
Article no.: CGN495148
1

Rear Sprocket AFAM 51 teeth - 420 Beta RR / Caballero

32,50 €
In stock
AFAM
Rear Sprocket 56 teeth - 428 Afam 6 holes d.110mm Sherco Enduro 50
Article no.: CGN495147

Rear Sprocket 56 teeth - 428 Afam 6 holes d.110mm Sherco Enduro 50

35,00 €
In stock
Standard Parts
Chain Tensioner left Rieju MX after 2000
Article no.: EKP-126808

Chain Tensioner left Rieju MX after 2000

6,10 €
In stock
Standard Parts
Chain Tensioner right Rieju MX after 2000
Article no.: EKP-126807

Chain Tensioner right Rieju MX after 2000

6,90 €
In stock
Rieju
Chain Tensioner OEM quality Rieju 50
Article no.: EKP-126742

Chain Tensioner OEM quality Rieju 50

13,50 €
In stock
Standard Parts
Chain Master Link Scooter-Attack chain 428, reinforced, gold
Article no.: L-SA485376

Chain Master Link Scooter-Attack chain 428, reinforced, gold

3,40 €
In stock
AFAM
Chain Master Link reinforced Afam for chain 415
Article no.: L-SA485371

Chain Master Link reinforced Afam for chain 415

2,30 €
In stock
Standard Parts
Retainer Plate for sprocket 11 teeth special Derbi Euro 2 / Euro 3
Article no.: CGN490398

Retainer Plate for sprocket 11 teeth special Derbi Euro 2 / Euro 3

4,50 €
In stock
Doppler
Chain Kit aluminium gold 13x53 - 420 Doppler Rieju MRT
Article no.: CGN491213
5

Chain Kit aluminium gold 13x53 - 420 Doppler Rieju MRT

99,00 €
In stock
Derbi
Front Sprocket 11 teeth Derbi Euro 3 (D50B0)
Article no.: OE-DE86177R

Front Sprocket 11 teeth Derbi Euro 3 (D50B0)

14,00 €
In stock
Derbi
Gear Selector Shaft Derbi Euro 3 (D50B0)
Article no.: OE-DE847236

Gear Selector Shaft Derbi Euro 3 (D50B0)

97,00 €
In stock
Derbi
Lever for gear selector shaft Derbi Euro 3 (D50B0)
Article no.: OE-DE847068
1

Lever for gear selector shaft Derbi Euro 3 (D50B0)

15,50 €
In stock
Standard Parts
Chain Kit 12x53 - 420 d=108mm 6 holes Derbi Senda SM / DRD
Article no.: CGN486688
1

Chain Kit 12x53 - 420 d=108mm 6 holes Derbi Senda SM / DRD

48,00 €
In stock
Standard Parts
Retaining Plate f. sprocket Derbi Euro 2 / Euro 3
Article no.: CGN484861
2

Retaining Plate f. sprocket Derbi Euro 2 / Euro 3

4,50 €
In stock
Standard Parts
Rear Sprocket 48 teeth - 420 Peugeot / Rieju
Article no.: CGN484142
1

Rear Sprocket 48 teeth - 420 Peugeot / Rieju

22,50 €
In stock
Standard Parts
Chain Master Link Iris Racing super reinforced d=415
Article no.: CGN8872
1

Chain Master Link Iris Racing super reinforced d=415

4,50 €
In stock
Standard Parts
Chain Master Link Iris standard d=415
Article no.: CGN8869

Chain Master Link Iris standard d=415

2,30 €
In stock
AFAM
Chain Kit AFAM 12x53 Aprilia RS/RX/RS4 2006 - 2010
Article no.: CGN482389
3

Chain Kit AFAM 12x53 Aprilia RS/RX/RS4 2006 - 2010

73,00 €
In stock
AFAM
Chain Kit AFAM 11x60 Yamaha TZR after 2003
Article no.: CGN478546
2

Chain Kit AFAM 11x60 Yamaha TZR after 2003

54,00 €
In stock
AFAM
Chain Kit AFAM 14x53 Derbi Senda X-treme
Article no.: CGN467429
4

Chain Kit AFAM 14x53 Derbi Senda X-treme

64,50 €
In stock
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The gearbox - tuning via gear ratio

The gearbox or transmission is a mechanical device that transmits a motion from one part to another, with the possibility of changing speed and torque by gearing up or gearing down. In a scooter, there is the primary transmission (input shaft to torque drive + intermediate shaft) and secondary transmission (intermediate shaft + output shaft to wheel). The gear ratio has a great impact on acceleration and top speed. A short gear ratio gives good acceleration, but is a little weak on speed, which can be compensated by a longer gear ratio.

Since the gearbox is a very complex subject, here we have a gearbox tutorial for you that will help you choose your new gear ratio.

The complex world of gear ratios

Do you simply want to replace gearbox components because they are defective or worn? Or do you want to adjust the gear ratio after upgrading to a more powerful cylinder? In both cases, we recommend replacing both primary and secondary gears at the same time.

For very powerful engines, we recommend selecting the gears in a way that the final drive ratio can adequately convert the power delivered by the engine. Using a longer gear ratio may actually worsen acceleration, so you should always match the gearbox to the available RPM. Longer does not always mean better, it is best to get enough information before installing new gears!

In our online store we carry a wide range of individual gears and complete gearboxess for most scooters, mopeds and maxi scooters. Leading brands such as

offer top quality products at fair prices, with which you can improve the performance of your engine.

If you simply want to overhaul your gearbox, we also carry original spare parts for you, for manufacturers like

and many more.

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