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Transmission

(684 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 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
Chain Kit Afam 13x42 - 420 Skyteam Skymax 50cc 2010 - 2014
Article no.: CGN505628

Chain Kit Afam 13x42 - 420 Skyteam Skymax 50cc 2010 - 2014

46,00 €
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 AFAM XS-Ring reinforced gold 428 XMR-G 136 links
Article no.: AFAM428XMR-G-136

Chain AFAM XS-Ring reinforced gold 428 XMR-G 136 links

69,50 €
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
Top Performances
Primary Gear Shaft Top Performances Minarelli AM6 V1
Article no.: TAM00001

Primary Gear Shaft Top Performances Minarelli AM6 V1

96,50 €
Currently not in stock
Standard Parts
Chain Roller Pit Bike / Dirt Bike (just roller)
Article no.: MB7568

Chain Roller Pit Bike / Dirt Bike (just roller)

6,40 €
Currently not in stock
Standard Parts
Clutch Gear 69 teeth Pit Bike Lifan / YX 50cc - 125cc
Article no.: MB3003

Clutch Gear 69 teeth Pit Bike Lifan / YX 50cc - 125cc

48,00 €
Currently not in stock
AFAM
Chain Kit Afam 12x52 - 420 Gas Gas Rookie 50cc
Article no.: AFAM85

Chain Kit Afam 12x52 - 420 Gas Gas Rookie 50cc

53,00 €
Currently not in stock
Voca Racing
Rear Sprocket 40 teeth - 420 Voca Alu Neochrome Yamaha DT 50 LC Portugal
Article no.: VCR-SD450.YDT.40/TI

Rear Sprocket 40 teeth - 420 Voca Alu Neochrome Yamaha DT 50 LC Portugal

42,00 €
Currently not in stock
Voca Racing
Rear Sprocket 40 teeth - 420 Voca Alu Red Yamaha DT 50 LC Portugal
Article no.: VCR-SD450.YDT.40/RE

Rear Sprocket 40 teeth - 420 Voca Alu Red Yamaha DT 50 LC Portugal

42,00 €
Currently not in stock
Rieju
Rear Sprocket Rieju 60 Z SMX / RRX / Spike-X Power Up
Article no.: OE-RIE0/000.500.5030

Rear Sprocket Rieju 60 Z SMX / RRX / Spike-X Power Up

45,00 €
Currently not in stock
AFAM
Chain Kit AFAM 12x56 Beta RR 1999 - 2001
Article no.: AFAMKS-A-149

Chain Kit AFAM 12x56 Beta RR 1999 - 2001

73,00 €
Currently not in stock
AFAM
Chain Kit AFAM 11x51 Aprilia RX50 Racing
Article no.: AFAMKS-A-175

Chain Kit AFAM 11x51 Aprilia RX50 Racing

45,50 €
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 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
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789101112

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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