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Transmission

(586 products)
50cc Bike Gearboxes Chains and Sprockets Gear Drives Transmission Accessories
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Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Clutch accessories Clutch kit Crankshaft accessories Fairing Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Chain rear sprocket Screws other Transmission accessories Transmission gear
Brand
AFAM Avoc Beta 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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Voca Racing
Rear Sprocket Beta RR 50 teeth - 420 Voca Alu Neochrome
Article no.: VCR-SD450.BETA.50/TI

Rear Sprocket Beta RR 50 teeth - 420 Voca Alu Neochrome

49,50 €
In stock
Voca Racing
Rear Sprocket Beta RR 50 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.BETA.50/BL

Rear Sprocket Beta RR 50 teeth - 420 Voca Alu blue

48,00 €
In stock
Voca Racing
Rear Sprocket Beta RR 48 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.BETA.48/BL

Rear Sprocket Beta RR 48 teeth - 420 Voca Alu blue

43,00 €
In stock
Voca Racing
Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu red
Article no.: VCR-SD450.SDA.50/RE

Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu red

49,50 €
In stock
Voca Racing
Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu black
Article no.: VCR-SD450.SDA.50/BK

Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu black

49,50 €
In stock
Voca Racing
Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu Neochrome
Article no.: VCR-SD450.SDA.50/TI

Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu Neochrome

51,50 €
In stock
Voca Racing
Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.SDA.50/BL

Rear Sprocket Aprilia SX 50cc 50 teeth - 420 Voca Alu blue

49,50 €
In stock
Voca Racing
Rear Sprocket Aprilia SX 50cc 48 teeth - 420 Voca Alu Neochrome
Article no.: VCR-SD450.SDA.48/TI

Rear Sprocket Aprilia SX 50cc 48 teeth - 420 Voca Alu Neochrome

49,50 €
In stock
Voca Racing
Rear Sprocket Aprilia SX 50cc 48 teeth - 420 Voca Alu blue
Article no.: VCR-SD450.SDA.48/BL

Rear Sprocket Aprilia SX 50cc 48 teeth - 420 Voca Alu blue

48,00 €
In stock
MotoForce Racing
Front Sprocket 15 teeth 420 MotoForce Racing AM6 Neochrome
Article no.: MF89.00026

Front Sprocket 15 teeth 420 MotoForce Racing AM6 Neochrome

11,00 €
In stock
MotoForce Racing
Front Sprocket 14 teeth 428 MotoForce Racing AM6 Neochrome
Article no.: MF89.00028

Front Sprocket 14 teeth 428 MotoForce Racing AM6 Neochrome

10,50 €
In stock
MotoForce Racing
Front Sprocket 14 teeth 420 MotoForce Racing AM6 Neochrome
Article no.: MF89.00025

Front Sprocket 14 teeth 420 MotoForce Racing AM6 Neochrome

10,50 €
In stock
MotoForce Racing
Front Sprocket 13 teeth 428 MotoForce Racing AM6 Neochrome
Article no.: MF89.00027

Front Sprocket 13 teeth 428 MotoForce Racing AM6 Neochrome

10,50 €
In stock
MotoForce Racing
Front Sprocket 13 teeth 420 MotoForce Racing AM6 Neochrome
Article no.: MF89.00024

Front Sprocket 13 teeth 420 MotoForce Racing AM6 Neochrome

10,50 €
In stock
MotoForce Racing
Front Sprocket 15 teeth - 420 MotoForce Racing Derbi Neochrome
Article no.: MF89.00023

Front Sprocket 15 teeth - 420 MotoForce Racing Derbi Neochrome

10,50 €
In stock
MotoForce Racing
Front Sprocket 14 teeth 420 MotoForce Racing Derbi Neochrome
Article no.: MF89.00022

Front Sprocket 14 teeth 420 MotoForce Racing Derbi Neochrome

10,50 €
In stock
MotoForce Racing
Front Sprocket 13 teeth 420 MotoForce Racing Derbi Neochrome
Article no.: MF89.00021

Front Sprocket 13 teeth 420 MotoForce Racing Derbi Neochrome

10,50 €
In stock
Doppler
Chain Guide Doppler Rieju MRT Neochrome
Article no.: CGN520883

Chain Guide Doppler Rieju MRT Neochrome

34,00 €
In stock
Doppler
Rear Sprocket Doppler 53 teeth - 428 aluminum neochrome Sherco 50
Article no.: CGN517732

Rear Sprocket Doppler 53 teeth - 428 aluminum neochrome Sherco 50

71,00 €
In stock
Doppler
Rear Sprocket steel 53Z - 420 Doppler Origin Peugeot / Rieju
Article no.: CGN509888

Rear Sprocket steel 53Z - 420 Doppler Origin Peugeot / Rieju

32,50 €
In stock
Standard Parts
Screw M8x35 galvanized 8.8 (x10)
Article no.: SP-10265

Screw M8x35 galvanized 8.8 (x10)

1,90 €
In stock
Standard Parts
Rear Sprocket IGM Rieju SMX "06 62mm 5 hole 50 teeth
Article no.: SP-87870

Rear Sprocket IGM Rieju SMX "06 62mm 5 hole 50 teeth

13,50 €
In stock
AFAM
Chain Master Link clip for motocross chain AFAM A420MX2G
Article no.: AFAMARA420MX2-G

Chain Master Link clip for motocross chain AFAM A420MX2G

3,80 €
In stock
AFAM
Chain motocross AFAM A420MX2G - clip
Article no.: AFAMA420MX2-G

Chain motocross AFAM A420MX2G - clip

from 39,50 €
In stock
50,00 €
-21% Discount
AFAM
Chain Master Link clip AFAM ARS A428MX-G gold
Article no.: AFAMARSA428MX-G

Chain Master Link clip AFAM ARS A428MX-G gold

5,40 €
In stock
Standard Parts
Rear Sprocket Premium 66 teeth - 420 black Fantic XM50 /XE50 after 2018
Article no.: IP49519

Rear Sprocket Premium 66 teeth - 420 black Fantic XM50 /XE50 after 2018

46,50 €
In stock
Standard Parts
Rear Sprocket Premium 60 teeth - 420 black Fantic XM50 /XE50 after 2018
Article no.: IP49518

Rear Sprocket Premium 60 teeth - 420 black Fantic XM50 /XE50 after 2018

41,50 €
In stock
Standard Parts
Rear Sprocket Premium 58 teeth - 420 black Fantic XM50 / XE50 after 2018
Article no.: IP49517

Rear Sprocket Premium 58 teeth - 420 black Fantic XM50 / XE50 after 2018

43,00 €
In stock
Standard Parts
Rear Sprocket 53 teeth - 420 Doppler Masai Rider 50
Article no.: CGN517184

Rear Sprocket 53 teeth - 420 Doppler Masai Rider 50

57,00 €
In stock
Standard Parts
Chain reinforced 134 links D.420 Doppler purple
Article no.: CGN517760

Chain reinforced 134 links D.420 Doppler purple

30,50 €
In stock
Voca Racing
Gearbox Voca Racing Derbi
Article no.: VCR-RD77193.CC

Gearbox Voca Racing Derbi

517,00 €
In stock
RRP
570,00 €
-9% Discount
Avoc
Chain Tensioners (x2) Avoc Orange KTM Duke 125
Article no.: AVOC-181854

Chain Tensioners (x2) Avoc Orange KTM Duke 125

19,00 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Fantic Caballero before 2015
Article no.: CGN515220

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Fantic Caballero before 2015

52,50 €
In stock
KRM
Ceramic Ball for clutch rod KRM Minarelli AM6
Article no.: KR540F

Ceramic Ball for clutch rod KRM Minarelli AM6

6,60 €
In stock
Derbi
Chain Tensioner Plate (x1) Derbi DRD Racing
Article no.: OE-DE00H01301471

Chain Tensioner Plate (x1) Derbi DRD Racing

23,00 €
In stock
Conti
Rear Sprocket bi-metal red 53 teeth - 420 Conti CHR Aprilia SX 50
Article no.: CGN513622

Rear Sprocket bi-metal red 53 teeth - 420 Conti CHR Aprilia SX 50

71,00 €
In stock
Conti
Rear Sprocket bimetal red 53 teeth - 428 Conti CHR Beta RR
Article no.: CGN513620

Rear Sprocket bimetal red 53 teeth - 428 Conti CHR Beta RR

71,00 €
In stock
Standard Parts
Chain Kit Afam 12x58 - 420 Fantic Caballero 2006 - 2017
Article no.: CGN509298

Chain Kit Afam 12x58 - 420 Fantic Caballero 2006 - 2017

66,00 €
In stock
Standard Parts
Rear Sprocket steel 52 teeth - 420 CPI SX / SM
Article no.: MF89.00371

Rear Sprocket steel 52 teeth - 420 CPI SX / SM

25,00 €
In stock
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Derbi DRD Pro
Article no.: CGN509884

Rear Sprocket steel 53 teeth - 420 Doppler Derbi DRD Pro

34,50 €
In stock
Doppler
Rear Sprocket steel 53 teeth - 428 Doppler Origin Beta RR
Article no.: CGN509882

Rear Sprocket steel 53 teeth - 428 Doppler Origin Beta RR

34,50 €
In stock
Doppler
Chain Tensioner wheel axle 15mm Doppler Alu CNC red Derbi / Gilera / Aprilia
Article no.: CGN508644

Chain Tensioner wheel axle 15mm Doppler Alu CNC red Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Chain Tensioner wheel axle 15mm Doppler Alu CNC black Derbi / Gilera / Aprilia
Article no.: CGN508645

Chain Tensioner wheel axle 15mm Doppler Alu CNC black Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Chain Tensioner axle 15mm Doppler Alu CNC blue Derbi / Gilera / Aprilia
Article no.: CGN508647

Chain Tensioner axle 15mm Doppler Alu CNC blue Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Chain Tensioner wheel axle 12mm Doppler Alu CNC red Derbi / Gilera / Aprilia
Article no.: CGN508640

Chain Tensioner wheel axle 12mm Doppler Alu CNC red Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Chain Tensioner 12mm axle Doppler Alu CNC gold Derbi / Gilera / Aprilia
Article no.: CGN508642

Chain Tensioner 12mm axle Doppler Alu CNC gold Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Chain Tensioner wheel axle 12mm Doppler Alu CNC black Derbi / Gilera / Aprilia
Article no.: CGN508641

Chain Tensioner wheel axle 12mm Doppler Alu CNC black Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Chain Tensioner wheel axle 12mm Doppler Alu CNC blue Derbi / Gilera / Aprilia
Article no.: CGN508643

Chain Tensioner wheel axle 12mm Doppler Alu CNC blue Derbi / Gilera / Aprilia

25,50 €
In stock
Doppler
Front Sprocket Doppler - 428 Neochrome Minarelli AM6
Article no.: CGN428NEOAM6

Front Sprocket Doppler - 428 Neochrome Minarelli AM6

12,50 €
In stock
Doppler
Front Sprocket Doppler - 428 Black coating Minarelli AM6
Article no.: CGN428NOIRAM6

Front Sprocket Doppler - 428 Black coating Minarelli AM6

from 8,00 €
In stock
12,50 €
-36% Discount
Doppler
Front Sprocket Doppler - 420 Neochrome Minarelli AM6
Article no.: CGN420NEOAM6

Front Sprocket Doppler - 420 Neochrome Minarelli AM6

12,50 €
In stock
Doppler
Front Sprocket Doppler - 420 Neochrome Derbi
Article no.: CGN420NEODERBI

Front Sprocket Doppler - 420 Neochrome Derbi

12,50 €
In stock
Doppler
Front Sprocket Doppler - 420 Black coating Minarelli AM6
Article no.: CGN420NOIRAM6

Front Sprocket Doppler - 420 Black coating Minarelli AM6

12,50 €
In stock
Doppler
Front Sprocket Doppler - 420 Black coating Derbi
Article no.: CGN420NOIRDERBI

Front Sprocket Doppler - 420 Black coating Derbi

12,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler black steel Sherco Enduro 50
Article no.: CGN509881

Rear Sprocket 53 teeth - 428 Doppler black steel Sherco Enduro 50

34,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC blue Sherco Enduro 50
Article no.: CGN508243

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

69,00 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC blue Rieju MRT
Article no.: CGN508244

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

54,50 €
In stock
AFAM
Rear Sprocket 52 teeth - 420 Afam Aprilia SX 50
Article no.: A264720

Rear Sprocket 52 teeth - 420 Afam Aprilia SX 50

31,00 €
In stock
Standard Parts
Screw Set rear sprocket M7x25mm Tomos A35
Article no.: MOF-39730

Screw Set rear sprocket M7x25mm Tomos A35

2,90 €
In stock
AFAM
Rear Sprocket Afam steel 52 teeth Beta RR 125 LC
Article no.: 1074640003

Rear Sprocket Afam steel 52 teeth Beta RR 125 LC

15,00 €
In stock
RRP
29,50 €
-49% Discount
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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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