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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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Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 55 teeth black
Article no.: MR12111424

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 55 teeth black

38,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 51 teeth black
Article no.: MR12111418

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 51 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 50 teeth black
Article no.: MR12111417

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 50 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 48 teeth black
Article no.: MR12111415

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 48 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 46 teeth black
Article no.: MR12111413

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 46 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 45 teeth black
Article no.: MR12111412

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 45 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Yamaha 49 teeth blue
Article no.: MR12111627

Rear Sprocket aluminium 520 Moose Racing Yamaha 49 teeth blue

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 52 teeth orange
Article no.: MR12111664

Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 52 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 51 teeth orange
Article no.: MR12111663

Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 51 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 49 teeth orange
Article no.: MR12111661

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

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 48 teeth orange
Article no.: MR12111660

Rear Sprocket aluminium 520 Moose Racing KTM / Husqvarna 48 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM 125 - 500 47 teeth orange
Article no.: MR12111659

Rear Sprocket aluminium 520 Moose Racing KTM 125 - 500 47 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM 125 - 500 46 teeth orange
Article no.: MR12111658

Rear Sprocket aluminium 520 Moose Racing KTM 125 - 500 46 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KTM 125 - 500 45 teeth orange
Article no.: MR12111657

Rear Sprocket aluminium 520 Moose Racing KTM 125 - 500 45 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 420 Moose Racing TC / SX 65 50 teeth orange
Article no.: MR12111656

Rear Sprocket aluminium 420 Moose Racing TC / SX 65 50 teeth orange

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Honda / Beta 450 teeth red
Article no.: MR12111635

Rear Sprocket aluminium 520 Moose Racing Honda / Beta 450 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Honda / Beta 49 teeth red
Article no.: MR12111634

Rear Sprocket aluminium 520 Moose Racing Honda / Beta 49 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Honda / Beta 48 teeth red
Article no.: MR12111633

Rear Sprocket aluminium 520 Moose Racing Honda / Beta 48 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Honda / Beta 47 teeth red
Article no.: MR12111632

Rear Sprocket aluminium 520 Moose Racing Honda / Beta 47 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Honda / Beta 46 teeth red
Article no.: MR12111631

Rear Sprocket aluminium 520 Moose Racing Honda / Beta 46 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Honda / Beta 45 teeth red
Article no.: MR12111630

Rear Sprocket aluminium 520 Moose Racing Honda / Beta 45 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 420 Moose Racing TC / SX 65 46 teeth black
Article no.: MR12111445

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

38,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 428 Moose Racing TC / SX 85 49 teeth black
Article no.: MR12111450

Rear Sprocket aluminium 428 Moose Racing TC / SX 85 49 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 428 Moose Racing TC / SX 85 48 teeth black
Article no.: MR12111449

Rear Sprocket aluminium 428 Moose Racing TC / SX 85 48 teeth black

39,50 €
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
Gear Selector Shaft 185mm start in neutral Pit Bike engine YX 125cc
Article no.: MBC03K000

Gear Selector Shaft 185mm start in neutral Pit Bike engine YX 125cc

37,00 €
Currently not in stock
Standard Parts
Gear Shift Lock Lever Pit Bike engine YX 140cc
Article no.: MB2081K070

Gear Shift Lock Lever Pit Bike engine YX 140cc

4,20 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium green - d.15mm Pit Bike / Dirt Bike
Article no.: MB7549

Chain Tensioner aluminium green - d.15mm Pit Bike / Dirt Bike

9,30 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium orange - d.15mm Pit Bike / Dirt Bike
Article no.: MB7543

Chain Tensioner aluminium orange - d.15mm Pit Bike / Dirt Bike

9,30 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium gold - d.15mm Pit Bike / Dirt Bike
Article no.: MB7545

Chain Tensioner aluminium gold - d.15mm Pit Bike / Dirt Bike

9,30 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium red - d.12mm Pit Bike / Dirt Bike
Article no.: MB7546

Chain Tensioner aluminium red - d.12mm Pit Bike / Dirt Bike

9,30 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium orange - d.12mm Pit Bike / Dirt Bike
Article no.: MB7542

Chain Tensioner aluminium orange - d.12mm Pit Bike / Dirt Bike

9,30 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium red - d.15mm Pit Bike / Dirt Bike
Article no.: MB3161

Chain Tensioner aluminium red - d.15mm Pit Bike / Dirt Bike

9,90 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium black - d.15mm Pit Bike / Dirt Bike
Article no.: MB7530

Chain Tensioner aluminium black - d.15mm Pit Bike / Dirt Bike

9,90 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium green - d.12mm Pit Bike / Dirt Bike
Article no.: MB7536

Chain Tensioner aluminium green - d.12mm Pit Bike / Dirt Bike

9,90 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium orange - d.12mm Pit Bike / Dirt Bike
Article no.: MB7531

Chain Tensioner aluminium orange - d.12mm Pit Bike / Dirt Bike

9,90 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium gold - d.12mm Pit Bike / Dirt Bike
Article no.: MB7533

Chain Tensioner aluminium gold - d.12mm Pit Bike / Dirt Bike

9,90 €
Currently not in stock
Standard Parts
Chain Tensioner aluminium black - d.12mm Pit Bike / Dirt Bike
Article no.: MB7529

Chain Tensioner aluminium black - d.12mm Pit Bike / Dirt Bike

9,90 €
Currently not in stock
Volt Racing
Chain Tensioner aluminium CNC Volt Racing green - d.15mm Pit Bike / Dirt Bike
Article no.: MB4503

Chain Tensioner aluminium CNC Volt Racing green - d.15mm Pit Bike / Dirt Bike

16,00 €
Currently not in stock
Volt Racing
Chain Tensioner aluminium CNC Volt Racing orange - d.15mm Pit Bike / Dirt Bike
Article no.: MB4415

Chain Tensioner aluminium CNC Volt Racing orange - d.15mm Pit Bike / Dirt Bike

16,00 €
Currently not in stock
Volt Racing
Chain Tensioner aluminium CNC Volt Racing gold - d.15mm Pit Bike / Dirt Bike
Article no.: MB4414

Chain Tensioner aluminium CNC Volt Racing gold - d.15mm Pit Bike / Dirt Bike

16,00 €
Currently not in stock
Volt Racing
Chain Tensioner aluminium CNC Volt Racing blue - d.15mm Pit Bike / Dirt Bike
Article no.: MB4413

Chain Tensioner aluminium CNC Volt Racing blue - d.15mm Pit Bike / Dirt Bike

16,00 €
Currently not in stock
Standard Parts
Chain Tensioner d.12,5mm Pit Bike / Dirt Bike
Article no.: MB8292

Chain Tensioner d.12,5mm Pit Bike / Dirt Bike

5,30 €
Currently not in stock
Standard Parts
Swingarm Slider Pit Bike / Dirt Bike Apollo green
Article no.: MB7506

Swingarm Slider Pit Bike / Dirt Bike Apollo green

8,00 €
Currently not in stock
Standard Parts
Chain Guide PTFE screw spacing 33mm red Pit Bike / Dirt Bike
Article no.: MB3262

Chain Guide PTFE screw spacing 33mm red Pit Bike / Dirt Bike

11,50 €
Currently not in stock
Standard Parts
Chain Guide screw spacing 33mm orange Pit Bike / Dirt Bike
Article no.: MB7145

Chain Guide screw spacing 33mm orange Pit Bike / Dirt Bike

20,50 €
Currently not in stock
Standard Parts
Chain Guide screw spacing 33mm blue Pit Bike / Dirt Bike
Article no.: MB7143

Chain Guide screw spacing 33mm blue Pit Bike / Dirt Bike

20,50 €
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
Standard Parts
Secondary Gears Pit Bike 125cc / 138cc / 140cc / 150cc Lifan - d.17mm
Article no.: MB3434

Secondary Gears Pit Bike 125cc / 138cc / 140cc / 150cc Lifan - d.17mm

63,00 €
Currently not in stock
Standard Parts
Primary Gears start in neutral Pit Bike 125cc Lifan
Article no.: MB3431

Primary Gears start in neutral Pit Bike 125cc Lifan

52,00 €
Currently not in stock
Standard Parts
Gear Selector Shaft 145mm Pit Bike / Dirt Bike
Article no.: MB7817

Gear Selector Shaft 145mm Pit Bike / Dirt Bike

29,00 €
Currently not in stock
Standard Parts
Clutch Disc (x1) Honda Dax 50cc
Article no.: MF89.19901

Clutch Disc (x1) Honda Dax 50cc

3,10 €
Currently not in stock
Polini
Cruciform Polini Vespa PX 125 - 200cc
Article no.: P230.0403

Cruciform Polini Vespa PX 125 - 200cc

27,00 €
Currently not in stock
Polini
Gear Selector 4-speed Polini (H=50,2mm) Vespa Primavera 50 - 125cc ET3 after 1979
Article no.: P230.0402

Gear Selector 4-speed Polini (H=50,2mm) Vespa Primavera 50 - 125cc ET3 after 1979

101,00 €
Currently not in stock
Polini
Input Shaft and Gears Polini 10-14-17-20 Vespa Smallframe 50 / 125cc
Article no.: P202.1417

Input Shaft and Gears Polini 10-14-17-20 Vespa Smallframe 50 / 125cc

137,00 €
Currently not in stock
Polini
Primary Gears Polini Z=27-69 Vespa 125cc Primavera / PK
Article no.: P202.1222

Primary Gears Polini Z=27-69 Vespa 125cc Primavera / PK

183,00 €
Currently not in stock
Polini
Primary Gears Polini Z=24-72 Vespa 125cc Primavera / PK
Article no.: P202.1221

Primary Gears Polini Z=24-72 Vespa 125cc Primavera / PK

214,00 €
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

53,50 €
Currently not in stock
Kymco
Output Shaft Gear Kymco Agility 50cc 4-stroke 12 inch
Article no.: 23432-LBD6-E00

Output Shaft Gear Kymco Agility 50cc 4-stroke 12 inch

55,50 €
Currently not in stock
Kymco
Secondary Gears / Output Shaft Kymco Agility 50cc 4-stroke 12 inch
Article no.: 23431-KNBN-901

Secondary Gears / Output Shaft Kymco Agility 50cc 4-stroke 12 inch

177,00 €
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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