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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 Fairing Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Gearshift lever Ignition lock 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 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
Countershaft China 2-stroke / CPI / Keeway / Generic
Article no.: OE-CPI17800B09F000

Countershaft China 2-stroke / CPI / Keeway / Generic

48,50 €
Currently not in stock
Yamaha
Transmission Gear Shaft Minarelli AM6
Article no.: OE-AM4YVE74210000

Transmission Gear Shaft Minarelli AM6

174,00 €
Currently not in stock
Yamaha
Transmission Gear Shaft Minarelli AM6
Article no.: OE-AM4YVE74111000

Transmission Gear Shaft Minarelli AM6

174,00 €
Currently not in stock
Yamaha
Gear 6th 24 teeth Minarelli AM6
Article no.: OE-AM4YVE72610000

Gear 6th 24 teeth Minarelli AM6

120,00 €
Currently not in stock
Yamaha
Gear 5th 25 teeth Minarelli AM6
Article no.: OE-AM4YVE72510000

Gear 5th 25 teeth Minarelli AM6

120,00 €
Currently not in stock
Yamaha
Gear 4th 27 teeth Minarelli AM6
Article no.: OE-AM4YVE72410000

Gear 4th 27 teeth Minarelli AM6

97,00 €
Currently not in stock
Yamaha
Gear 3rd 29 teeth Minarelli AM6
Article no.: OE-AM4YVE72310000

Gear 3rd 29 teeth Minarelli AM6

97,00 €
Currently not in stock
Yamaha
Gear 2nd Minarelli AM6
Article no.: OE-AM4YVE72210000

Gear 2nd Minarelli AM6

97,00 €
Currently not in stock
Yamaha
Gear 1st 36 teeth Minarelli AM6
Article no.: OE-AM4YVE72111000

Gear 1st 36 teeth Minarelli AM6

97,00 €
Currently not in stock
Yamaha
Gear 6th 25 teeth Minarelli AM6
Article no.: OE-AM4YVE71610000

Gear 6th 25 teeth Minarelli AM6

97,00 €
Currently not in stock
Yamaha
Gear 5th 24 teeth Minarelli AM6
Article no.: OE-AM4YVE71510000

Gear 5th 24 teeth Minarelli AM6

97,00 €
Currently not in stock
Yamaha
Gear 3rd and 4th 19/22 teeth Minarelli AM6
Article no.: OE-AM4YVE71311000

Gear 3rd and 4th 19/22 teeth Minarelli AM6

120,00 €
Currently not in stock
Yamaha
Gear 2nd 24 teeth Minarelli AM6
Article no.: OE-AM4YVE71211000

Gear 2nd 24 teeth Minarelli AM6

120,00 €
Currently not in stock
YCF
Chain Tensioners Pit Bike YCF 50cc
Article no.: YCF-50-1021-01

Chain Tensioners Pit Bike YCF 50cc

6,30 €
Currently not in stock
YCF
Front Sprocket 10 teeth Pit Bike YCF50E
Article no.: MBRS35-10T

Front Sprocket 10 teeth Pit Bike YCF50E

11,00 €
Currently not in stock
YCF
Sprocket 10 teeth Pit Bike YCF 88E
Article no.: MBRS35/10T-01

Sprocket 10 teeth Pit Bike YCF 88E

18,00 €
Currently not in stock
YCF
Chain Roller Tensioner Pit Bike / Dirt Bike
Article no.: MB14670/152FMH

Chain Roller Tensioner Pit Bike / Dirt Bike

5,50 €
Currently not in stock
YCF
Swingarm Slider right side Pit Bike YCF 50cc
Article no.: YCF-50-20-64

Swingarm Slider right side Pit Bike YCF 50cc

5,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 43 teeth - 5 screws YCF Pit Bike green
Article no.: MBCA16R.43GR

Rear Sprocket aluminium CNC 420 - 43 teeth - 5 screws YCF Pit Bike green

41,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 43 teeth - 5 screws YCF Pit Bike red
Article no.: MBCA16R.43RD

Rear Sprocket aluminium CNC 420 - 43 teeth - 5 screws YCF Pit Bike red

41,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 43 teeth - 5 screws YCF Pit Bike black
Article no.: MBCA16R.43BK

Rear Sprocket aluminium CNC 420 - 43 teeth - 5 screws YCF Pit Bike black

41,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 41 teeth - 5 screws YCF Pit Bike green
Article no.: MBCA16R.41GR

Rear Sprocket aluminium CNC 420 - 41 teeth - 5 screws YCF Pit Bike green

41,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 41 teeth - 5 screws YCF Pit Bike orange
Article no.: MBCA16R.41OR

Rear Sprocket aluminium CNC 420 - 41 teeth - 5 screws YCF Pit Bike orange

41,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 41 teeth - 5 screws YCF Pit Bike blue
Article no.: MBCA16R.41BL

Rear Sprocket aluminium CNC 420 - 41 teeth - 5 screws YCF Pit Bike blue

41,50 €
Currently not in stock
YCF
Circlip front sprocket Pit Bike YCF50A
Article no.: YCF-50-20-98

Circlip front sprocket Pit Bike YCF50A

5,50 €
Currently not in stock
YCF
Chain Pit Bike YCF50E
Article no.: MBRS35-114

Chain Pit Bike YCF50E

21,00 €
Currently not in stock
YCF
Secondary Gears Pit Bike YCF50 2012/13/14
Article no.: YCF-50-20-105

Secondary Gears Pit Bike YCF50 2012/13/14

33,00 €
Currently not in stock
YCF
Primary Gears Pit Bike YCF50 2012/13/14
Article no.: YCF-50-20-106

Primary Gears Pit Bike YCF50 2012/13/14

39,50 €
Currently not in stock
YCF
Gear Selector Shaft Pit Bike YX 88cc - 125cc semi-automatic
Article no.: MBA001K000

Gear Selector Shaft Pit Bike YX 88cc - 125cc semi-automatic

38,00 €
Currently not in stock
YCF
Gear Selector Shaft 232mm Pit Bike YX 88cc - 125cc semi-automatic
Article no.: MB24300-G030-0000

Gear Selector Shaft 232mm Pit Bike YX 88cc - 125cc semi-automatic

33,00 €
Currently not in stock
YCF
Gear Selector Shaft 175mm Pit Bike / Dirt Bike
Article no.: MBC032K000

Gear Selector Shaft 175mm Pit Bike / Dirt Bike

38,50 €
Currently not in stock
YCF
Gear Selector Shaft (26cm) Pit Bike semi-automatic
Article no.: MB100106300-0001

Gear Selector Shaft (26cm) Pit Bike semi-automatic

16,50 €
Currently not in stock
YCF
Primary Gears Pit Bike Lifan 125cc / 140cc
Article no.: MB23600/152FMH

Primary Gears Pit Bike Lifan 125cc / 140cc

52,00 €
Currently not in stock
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454647484950

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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