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Transmission

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Axle other Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Chassis screws Circlip Clutch accessories Clutch kit Crankshaft accessories CVT sliders Engine case accessories Engine cover Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Gearshift lever Ignition lock Kickstarter accessories Oil seal kit Piston pin bearing Pulley Pulley gear Chain rear sprocket Repair kit Screw kit Screws other Tank accessories Transmission Transmission accessories Transmission gear Washer Wheel axle Woodruff key
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AFAM Algi Aprilia Avoc Beta Bidalot Buzzetti Conti CPI D.I.D Derbi Doppler GY6 Hot Rods IGM Iris Italjet Jasil KMC KRM Kymco Malossi Moose Racing Moto Master MotoForce MotoForce Racing Peugeot Piaggio Polini Polisport Pro Circuit Prox Renthal RFX Rieju RMS Scar Schmitt Stage6 Stage6 R/T Standard Parts STR8 Swiing Top Performances UFO Voca Racing Volt Racing Yamaha YCF YCF Factory
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Standard Parts
Chain type 25H 136 links Pocket Bike Pista
Article no.: SP-23358

Chain type 25H 136 links Pocket Bike Pista

7,30 €
Currently not in stock
Standard Parts
Chain Kit 14x60 - 420 Afam Rieju MRT
Article no.: CGN516910

Chain Kit 14x60 - 420 Afam Rieju MRT

75,00 €
Currently not in stock
Standard Parts
Chain Tensioner M7x1.00 - L.65mm MBK 51 (x1)
Article no.: CGN517090

Chain Tensioner M7x1.00 - L.65mm MBK 51 (x1)

3,90 €
Currently not in stock
Polini
Secondary Gears Polini 15/39 Honda SH 125/150i before 2012
Article no.: P202.1408

Secondary Gears Polini 15/39 Honda SH 125/150i before 2012

115,00 €
Currently not in stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler acier black Aprilia SX 50
Article no.: CGN509886

Rear Sprocket 53 teeth - 420 Doppler acier black Aprilia SX 50

34,50 €
Currently not in stock
AFAM
Chain Kit AFAM 14x38 Kymco KXR / Maxxer / MXU 250-300
Article no.: AFAMKS-A-90

Chain Kit AFAM 14x38 Kymco KXR / Maxxer / MXU 250-300

83,50 €
Currently not in stock
YCF
Chain Tensioners d.15mm Pit Bike YCF Lite
Article no.: YCF-110-1016-01

Chain Tensioners d.15mm Pit Bike YCF Lite

13,00 €
Currently not in stock
YCF
Chain Tensioners d.15mm YCF Pit Bike / Dirt Bike
Article no.: YCF-110-11-09

Chain Tensioners d.15mm YCF Pit Bike / Dirt Bike

16,50 €
Currently not in stock
YCF
Swingarm Slider HQ black Pit Bike YCF SP3 / Bigy
Article no.: YCF-110-1018-04

Swingarm Slider HQ black Pit Bike YCF SP3 / Bigy

48,00 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 39 teeth - 4 screws YCF Pit Bike
Article no.: MBCA06R.39/COLOR

Rear Sprocket aluminium CNC 420 - 39 teeth - 4 screws YCF Pit Bike

41,50 €
Currently not in stock
YCF
Chain Guard Pit Bike YCF 50 cc
Article no.: YCF-50-0600-02

Chain Guard Pit Bike YCF 50 cc

16,50 €
Currently not in stock
YCF
Secondary Gears d.17mm Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start
Article no.: MBA00K040

Secondary Gears d.17mm Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start

52,00 €
Currently not in stock
YCF
Primary Gears Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start
Article no.: MBA00K030

Primary Gears Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start

52,00 €
Currently not in stock
Malossi
Front Sprocket 17 teeth Malossi Puch Maxi
Article no.: M612499B

Front Sprocket 17 teeth Malossi Puch Maxi

12,00 €
Currently not in stock
Malossi
Input Shaft Malossi Racing, 10-15-18-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)
Article no.: M6716207

Input Shaft Malossi Racing, 10-15-18-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)

174,00 €
Currently not in stock
Malossi
Input Shaft Malossi Sport, 10-14-17-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)
Article no.: M6716696

Input Shaft Malossi Sport, 10-14-17-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)

167,00 €
Currently not in stock
Malossi
Primary Gears Malossi 24/63 Vespa Cosa / PXE 200cc
Article no.: M675235

Primary Gears Malossi 24/63 Vespa Cosa / PXE 200cc

172,00 €
Currently not in stock
Malossi
Primary Gears Malossi 23/64 Vespa Cosa / PX 125cc
Article no.: M673730

Primary Gears Malossi 23/64 Vespa Cosa / PX 125cc

172,00 €
Currently not in stock
Malossi
Secondary Gears Malossi Piaggio Zip 50 4T 15/55
Article no.: M6711135

Secondary Gears Malossi Piaggio Zip 50 4T 15/55

88,00 €
Currently not in stock
Malossi
Secondary Gears Malossi Piaggio Liberty 125 15/47
Article no.: M6711445

Secondary Gears Malossi Piaggio Liberty 125 15/47

66,00 €
Currently not in stock
Malossi
Primary Gears Malossi 20/72 Aprilia Scar TPSIO 125-150cc
Article no.: M6711539

Primary Gears Malossi 20/72 Aprilia Scar TPSIO 125-150cc

154,00 €
Currently not in stock
Malossi
Primary Gears Malossi 20/46 Aprilia Leonardo 125-150cc
Article no.: M6711360

Primary Gears Malossi 20/46 Aprilia Leonardo 125-150cc

90,00 €
Currently not in stock
Moose Racing
Chain 428-RXP PRO-MX 96 links gold
Article no.: MRM5750096

Chain 428-RXP PRO-MX 96 links gold

33,50 €
Currently not in stock
Moose Racing
Chain 520-RXP PRO-MX 96 links gold
Article no.: MRM5740096

Chain 520-RXP PRO-MX 96 links gold

73,00 €
Currently not in stock
Moose Racing
Screw / Bolt Kit Rear Sprocket
Article no.: MR24011277

Screw / Bolt Kit Rear Sprocket

11,50 €
Currently not in stock
Moose Racing
Spare Rail for Chain Guide Moose Racing KXF 250 / 450
Article no.: MR12310197

Spare Rail for Chain Guide Moose Racing KXF 250 / 450

17,00 €
Currently not in stock
Moose Racing
Oil Seal Set countershaft Moose Racing KX 500
Article no.: MR09350845

Oil Seal Set countershaft Moose Racing KX 500

30,50 €
Currently not in stock
Moose Racing
Washers starlock sprocket (x10) Moose Racing KXF 450
Article no.: MR09350495

Washers starlock sprocket (x10) Moose Racing KXF 450

35,00 €
Currently not in stock
Moose Racing
Washers starlock sprocket (x10) Moose Racing DR-Z 400
Article no.: MR09350484

Washers starlock sprocket (x10) Moose Racing DR-Z 400

24,00 €
Currently not in stock
Moose Racing
Oil Seal Set countershaft Moose Racing RM 250
Article no.: MR09350452

Oil Seal Set countershaft Moose Racing RM 250

25,50 €
Currently not in stock
Moose Racing
Oil Seal Set countershaft Moose Racing SX 65
Article no.: MR09350434

Oil Seal Set countershaft Moose Racing SX 65

26,00 €
Currently not in stock
Moose Racing
Chain Master Link type 420 Moose Racing RXP
Article no.: MRM5760001

Chain Master Link type 420 Moose Racing RXP

4,60 €
Currently not in stock
Moose Racing
Chain Master Link type 428 Moose Racing RXP
Article no.: MRM5750001

Chain Master Link type 428 Moose Racing RXP

4,60 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing XTX 660 45 teeth black
Article no.: MR12102142

Rear Sprocket steel 520 Moose Racing XTX 660 45 teeth black

27,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 428 Moose Racing TC / SX 85 50 teeth blue
Article no.: MR12101820

Rear Sprocket aluminium / steel 428 Moose Racing TC / SX 85 50 teeth blue

61,00 €
Currently not in stock
Moose Racing
Rear Sprocket steel 420 Moose Racing TC / SX 65 46 teeth black
Article no.: MR12101798

Rear Sprocket steel 420 Moose Racing TC / SX 65 46 teeth black

31,00 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing RM / RM-Z 51 teeth black
Article no.: MR12101787

Rear Sprocket steel 520 Moose Racing RM / RM-Z 51 teeth black

31,00 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing RM / RM-Z 47 teeth black
Article no.: MR12101783

Rear Sprocket steel 520 Moose Racing RM / RM-Z 47 teeth black

29,00 €
Currently not in stock
Moose Racing
Rear Sprocket steel 420 Moose Racing KX 85 52 teeth black
Article no.: MR12101775

Rear Sprocket steel 420 Moose Racing KX 85 52 teeth black

31,00 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing Beta / Honda 53 teeth black
Article no.: MR12101760

Rear Sprocket steel 520 Moose Racing Beta / Honda 53 teeth black

29,00 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing KTM / Husqvarna 49 teeth black
Article no.: MR12101749

Rear Sprocket steel 520 Moose Racing KTM / Husqvarna 49 teeth black

27,50 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing KTM / Husqvarna 48 teeth black
Article no.: MR12101748

Rear Sprocket steel 520 Moose Racing KTM / Husqvarna 48 teeth black

27,50 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing Beta RR 49 teeth black
Article no.: MR12101742

Rear Sprocket steel 520 Moose Racing Beta RR 49 teeth black

27,50 €
Currently not in stock
Moose Racing
Rear Sprocket steel 520 Moose Racing Beta RR 48 teeth black
Article no.: MR12101741

Rear Sprocket steel 520 Moose Racing Beta RR 48 teeth black

27,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 520 Moose Racing 50 teeth
Article no.: MR12101513

Rear Sprocket aluminium / steel 520 Moose Racing 50 teeth

61,00 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 520 Moose Racing 49 teeth black
Article no.: MR12101510

Rear Sprocket aluminium / steel 520 Moose Racing 49 teeth black

67,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 520 Moose Racing RM / RM-Z 50 teeth
Article no.: MR12101505

Rear Sprocket aluminium / steel 520 Moose Racing RM / RM-Z 50 teeth

61,00 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 520 Moose Racing KX / KXF 48 teeth green
Article no.: MR12101491

Rear Sprocket aluminium / steel 520 Moose Racing KX / KXF 48 teeth green

61,00 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 520 Moose Racing Yamaha 51 teeth
Article no.: MR12101485

Rear Sprocket aluminium / steel 520 Moose Racing Yamaha 51 teeth

61,00 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium / steel 520 Moose Racing Yamaha 49 teeth black
Article no.: MR12101478

Rear Sprocket aluminium / steel 520 Moose Racing Yamaha 49 teeth black

61,00 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 50 teeth blue
Article no.: MR12111915

Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 50 teeth blue

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 49 teeth blue
Article no.: MR12111914

Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 49 teeth blue

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing 51 teeth blue
Article no.: MR12111908

Rear Sprocket aluminium 520 Moose Racing 51 teeth blue

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta RR 45 teeth black
Article no.: MR12111850

Rear Sprocket aluminium 520 Moose Racing Beta RR 45 teeth black

38,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Yamaha 51 teeth blue
Article no.: MR12111621

Rear Sprocket aluminium 520 Moose Racing Yamaha 51 teeth blue

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Yamaha 49 teeth blue
Article no.: MR12111619

Rear Sprocket aluminium 520 Moose Racing Yamaha 49 teeth blue

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Suzuki 50 teeth
Article no.: MR12111579

Rear Sprocket aluminium 520 Moose Racing Suzuki 50 teeth

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Suzuki 49 teeth
Article no.: MR12111578

Rear Sprocket aluminium 520 Moose Racing Suzuki 49 teeth

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KX / KXF 49 teeth
Article no.: MR12111564

Rear Sprocket aluminium 520 Moose Racing KX / KXF 49 teeth

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing 51 teeth
Article no.: MR12111541

Rear Sprocket aluminium 520 Moose Racing 51 teeth

39,50 €
Currently not 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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