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Transmission

(3001 products)
Gearboxes Chains and Sprockets Gear Drives Transmission Accessories
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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 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
Brand
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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Renthal
Rear Sprocket Renthal 520 Z.50 Twinring blue YZ / YZF
Article no.: REN-12100819

Rear Sprocket Renthal 520 Z.50 Twinring blue YZ / YZF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.49 Twinring blue YZ / YZF
Article no.: REN-12100818

Rear Sprocket Renthal 520 Z.49 Twinring blue YZ / YZF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.50 Twinring black KTM / Husqvarna
Article no.: REN-12100816

Rear Sprocket Renthal 520 Z.50 Twinring black KTM / Husqvarna

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.48 Twinring black KTM / Husqvarna
Article no.: REN-12100815

Rear Sprocket Renthal 520 Z.48 Twinring black KTM / Husqvarna

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.51 Twinring black CR / CRF
Article no.: REN-12100814

Rear Sprocket Renthal 520 Z.51 Twinring black CR / CRF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.50 Twinring black CR / CRF
Article no.: REN-12100813

Rear Sprocket Renthal 520 Z.50 Twinring black CR / CRF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.49 Twinring black CR / CRF
Article no.: REN-12100812

Rear Sprocket Renthal 520 Z.49 Twinring black CR / CRF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.48 Twinring black CR / CRF
Article no.: REN-12100811

Rear Sprocket Renthal 520 Z.48 Twinring black CR / CRF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.50 Twinring black YZ / YZF
Article no.: REN-12100810

Rear Sprocket Renthal 520 Z.50 Twinring black YZ / YZF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.49 Twinring black YZ / YZF
Article no.: REN-12100809

Rear Sprocket Renthal 520 Z.49 Twinring black YZ / YZF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.51 Twinring black Kawasaki KX / KXF
Article no.: REN-12100806

Rear Sprocket Renthal 520 Z.51 Twinring black Kawasaki KX / KXF

112,00 €
Currently not in stock
Renthal
Rear Sprocket Renthal 520 Z.50 Twinring black Kawasaki KX / KXF
Article no.: REN-12100805

Rear Sprocket Renthal 520 Z.50 Twinring black Kawasaki KX / KXF

112,00 €
Currently not in stock
Schmitt
Sealing Cap drive shaft Schmitt aluminium CNC Simson
Article no.: MOF-STT42162

Sealing Cap drive shaft Schmitt aluminium CNC Simson

33,50 €
Currently not in stock
Standard Parts
Lock Plate shift drum bolt B8. 4-ST DIN 463 Simson
Article no.: MOF-42172

Lock Plate shift drum bolt B8. 4-ST DIN 463 Simson

0,70 €
Currently not in stock
Standard Parts
Front Sprocket 18 teeth (old version) Simson
Article no.: MOF-41875

Front Sprocket 18 teeth (old version) Simson

3,40 €
Currently not in stock
Standard Parts
Chain Case w/ cover Simson
Article no.: MOF-41828

Chain Case w/ cover Simson

15,50 €
Currently not in stock
Standard Parts
Front Sprocket 16 teeth (old version) Simson
Article no.: MOF-41743

Front Sprocket 16 teeth (old version) Simson

7,00 €
Currently not in stock
Standard Parts
Front Sprocket 15 teeth (old version) Simson
Article no.: MOF-41742

Front Sprocket 15 teeth (old version) Simson

10,00 €
Currently not in stock
Standard Parts
Front Sprocket 13 teeth (old version) Simson
Article no.: MOF-41740

Front Sprocket 13 teeth (old version) Simson

11,00 €
Currently not in stock
Standard Parts
Engine Ratchet Plate Simson
Article no.: MOF-41615

Engine Ratchet Plate Simson

8,50 €
Currently not in stock
Standard Parts
Hollow Shaft gearshift lever Simson
Article no.: MOF-41575

Hollow Shaft gearshift lever Simson

97,50 €
Currently not in stock
Standard Parts
Gear Selector Fork Simson
Article no.: MOF-41559

Gear Selector Fork Simson

21,50 €
Currently not in stock
Standard Parts
Gear Shift Shaft Simson
Article no.: MOF-41542

Gear Shift Shaft Simson

21,00 €
Currently not in stock
Standard Parts
Gear Shift Fork / Bracket Simson
Article no.: MOF-41541

Gear Shift Fork / Bracket Simson

9,10 €
Currently not in stock
Standard Parts
Lock Plate front sprocket Simson
Article no.: MOF-41538

Lock Plate front sprocket Simson

1,10 €
Currently not in stock
Standard Parts
Sealing Cap front sprocket Simson
Article no.: MOF-41537

Sealing Cap front sprocket Simson

9,90 €
Currently not in stock
Standard Parts
Spring Seat clutch pressure spring Simson
Article no.: MOF-41533

Spring Seat clutch pressure spring Simson

3,00 €
Currently not in stock
Standard Parts
Spring output shaft Simson
Article no.: MOF-41515

Spring output shaft Simson

2,50 €
Currently not in stock
Standard Parts
Washer output shaft spring Simson
Article no.: MOF-41508

Washer output shaft spring Simson

0,80 €
Currently not in stock
Standard Parts
Ball 7mm output shaft Simson
Article no.: MOF-41493

Ball 7mm output shaft Simson

0,30 €
Currently not in stock
Standard Parts
Bolt shift drum 3- / 4-speed Simson
Article no.: MOF-41468

Bolt shift drum 3- / 4-speed Simson

13,00 €
Currently not in stock
Standard Parts
Idler Gear 38 teeth 2nd gear 3-speed Simson
Article no.: MOF-41456

Idler Gear 38 teeth 2nd gear 3-speed Simson

18,00 €
Currently not in stock
Standard Parts
Shift Drum 4-speed Simson
Article no.: MOF-41454

Shift Drum 4-speed Simson

50,00 €
Currently not in stock
Standard Parts
Spacer Bushing 22 teeth fixed gear clutch shaft 3-speed Simson
Article no.: MOF-41453

Spacer Bushing 22 teeth fixed gear clutch shaft 3-speed Simson

4,60 €
Currently not in stock
Standard Parts
Shift Drum Washer 12x18x1mm Simson
Article no.: MOF-41445

Shift Drum Washer 12x18x1mm Simson

3,20 €
Currently not in stock
Standard Parts
Clutch Disc Spring 1.8mm Simson
Article no.: MOF-41443

Clutch Disc Spring 1.8mm Simson

10,50 €
Currently not in stock
Standard Parts
Spacer Washer 17 / 22 teeth fixed gear 15x22x2mm Simson
Article no.: MOF-41441

Spacer Washer 17 / 22 teeth fixed gear 15x22x2mm Simson

4,20 €
Currently not in stock
Standard Parts
Washer kickstart shaft 16x32x1.3mm Simson
Article no.: MOF-41440

Washer kickstart shaft 16x32x1.3mm Simson

4,70 €
Currently not in stock
Standard Parts
Washer / Shim gearbox 24x35x1.5mm Simson
Article no.: MOF-41436

Washer / Shim gearbox 24x35x1.5mm Simson

3,90 €
Currently not in stock
Standard Parts
Clutch Disc Spring 1.5mm Simson
Article no.: MOF-41433

Clutch Disc Spring 1.5mm Simson

11,00 €
Currently not in stock
Standard Parts
Output Shaft 3-speed gearbox 9 holes Simson
Article no.: MOF-41431

Output Shaft 3-speed gearbox 9 holes Simson

37,50 €
Currently not in stock
Standard Parts
Idler Gear 22 teeth 3rd / 4th gear Simson
Article no.: MOF-41425

Idler Gear 22 teeth 3rd / 4th gear Simson

12,00 €
Currently not in stock
Standard Parts
Idler Gear 34 teeth 3rd / 4th gear Simson
Article no.: MOF-41424

Idler Gear 34 teeth 3rd / 4th gear Simson

26,00 €
Currently not in stock
Standard Parts
Fixed Gear 16 teeth 2nd gear 4-speed Simson
Article no.: MOF-41423

Fixed Gear 16 teeth 2nd gear 4-speed Simson

12,50 €
Currently not in stock
Standard Parts
Fixed Gear 19 teeth 3rd gear 4-speed Simson
Article no.: MOF-41422

Fixed Gear 19 teeth 3rd gear 4-speed Simson

13,00 €
Currently not in stock
Standard Parts
Idler Gear 44 teeth 1st gear 4-speed Simson
Article no.: MOF-41421

Idler Gear 44 teeth 1st gear 4-speed Simson

19,50 €
Currently not in stock
Standard Parts
Idler Gear 36 teeth 3rd gear 4-speed Simson
Article no.: MOF-41420

Idler Gear 36 teeth 3rd gear 4-speed Simson

19,00 €
Currently not in stock
Standard Parts
Swivel Fork draw key shaft Simson
Article no.: MOF-41405

Swivel Fork draw key shaft Simson

15,50 €
Currently not in stock
Standard Parts
Shift Drum 3-speed Simson
Article no.: MOF-41387

Shift Drum 3-speed Simson

26,00 €
Currently not in stock
Standard Parts
Locking Washer clutch basket large Simson
Article no.: MOF-41385

Locking Washer clutch basket large Simson

0,60 €
Currently not in stock
Standard Parts
Idler Gear 39 teeth 2nd gear 3-speed Simson
Article no.: MOF-41367

Idler Gear 39 teeth 2nd gear 3-speed Simson

26,00 €
Currently not in stock
Standard Parts
Drive Shaft Spring Simson
Article no.: MOF-41354

Drive Shaft Spring Simson

8,10 €
Currently not in stock
Standard Parts
Idler Gear 34 teeth 3rd gear 3-speed Simson
Article no.: MOF-41344

Idler Gear 34 teeth 3rd gear 3-speed Simson

26,00 €
Currently not in stock
Standard Parts
Sealing Cap drive shaft Simson
Article no.: MOF-41343

Sealing Cap drive shaft Simson

7,10 €
Currently not in stock
Standard Parts
Bearing Bolt speedometer cable Motor Simson
Article no.: MOF-41340

Bearing Bolt speedometer cable Motor Simson

1,90 €
Currently not in stock
Standard Parts
Slotted Nut gear adjustment Simson
Article no.: MOF-41335

Slotted Nut gear adjustment Simson

4,00 €
Currently not in stock
Standard Parts
Idler Gear 29 teeth 4th gear 4-speed Simson
Article no.: MOF-41304

Idler Gear 29 teeth 4th gear 4-speed Simson

7,50 €
Currently not in stock
Standard Parts
Fixed Gear 27 teeth 4th gear Simson
Article no.: MOF-41303

Fixed Gear 27 teeth 4th gear Simson

7,50 €
Currently not in stock
Standard Parts
Idler Gear 30 teeth 4th gear 4-speed Simson
Article no.: MOF-41294

Idler Gear 30 teeth 4th gear 4-speed Simson

30,00 €
Currently not in stock
Standard Parts
Fixed Gear 26 teeth 4th gear Simson
Article no.: MOF-41293

Fixed Gear 26 teeth 4th gear Simson

25,00 €
Currently not in stock
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51

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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