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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
Brand
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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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
Moose Racing
Rear Sprocket aluminium 520 Moose Racing 47 teeth
Article no.: MR12111537

Rear Sprocket aluminium 520 Moose Racing 47 teeth

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta / Honda 47 teeth
Article no.: MR12111512

Rear Sprocket aluminium 520 Moose Racing Beta / Honda 47 teeth

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Yamaha 125 - 450 49 teeth black
Article no.: MR12111489

Rear Sprocket aluminium 520 Moose Racing Yamaha 125 - 450 49 teeth black

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing KX / KXF 48 teeth black
Article no.: MR12111465

Rear Sprocket aluminium 520 Moose Racing KX / KXF 48 teeth black

39,50 €
Currently not in stock
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 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 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
Volt Racing
Chain Tensioner aluminium CNC d.15mm Volt Racing Pit Bike / Dirt Bike
Article no.: MB_TENSIOCNCVOLT/COLOR

Chain Tensioner aluminium CNC d.15mm Volt Racing 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
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
Kymco
Countershaft / Layshaft Kymco 14/53 Agility 50cc 4-stroke 12 inch
Article no.: 23420-LBD6-E00

Countershaft / Layshaft Kymco 14/53 Agility 50cc 4-stroke 12 inch

105,00 €
Currently not in stock
Kymco
Primary Gears / Drive Shaft Kymco Agility 50cc 4-stroke 12 inch
Article no.: 23411-LBD6-E00

Primary Gears / Drive Shaft Kymco Agility 50cc 4-stroke 12 inch

89,50 €
Currently not in stock
Polini
Primary Gears Polini 17-45 Vespa LX / Sprint / Primavera 125 4-stroke
Article no.: P202.1412

Primary Gears Polini 17-45 Vespa LX / Sprint / Primavera 125 4-stroke

128,00 €
Currently not in stock
RMS
Primary Gears RMS Z=24-61 Vespa PK 50-125cc ET3
Article no.: R100240140

Primary Gears RMS Z=24-61 Vespa PK 50-125cc ET3

65,00 €
Currently not in stock
RMS
Transmission / Clutch Repair Kit RMS Vespa Primavera 50 - 125cc
Article no.: R100300080

Transmission / Clutch Repair Kit RMS Vespa Primavera 50 - 125cc

5,40 €
Currently not in stock
RMS
Gear Selector 4-speed RMS (h=51mm) RMS Vespa Primavera / ET3 50 - 125cc
Article no.: R100220110

Gear Selector 4-speed RMS (h=51mm) RMS Vespa Primavera / ET3 50 - 125cc

46,50 €
Currently not in stock
Polini
Primary Gears Polini 23 / 60 Vespa 125cc Primavera / PK
Article no.: P202.1213

Primary Gears Polini 23 / 60 Vespa 125cc Primavera / PK

218,00 €
Currently not in stock
Yamaha
Secondary Gears 43 teeth Yamaha Aerox / Nitro
Article no.: OE-MAL3WT-E7420-00

Secondary Gears 43 teeth Yamaha Aerox / Nitro

153,00 €
Currently not in stock
Schmitt
Clutch Pull Bearing Schmitt reinforced with thrust bearing Puch 4-/3-speed R engine
Article no.: STT49610

Clutch Pull Bearing Schmitt reinforced with thrust bearing Puch 4-/3-speed R engine

36,00 €
Currently not in stock
Schmitt
Clutch Pull Bearing Schmitt reinforced with thrust bearing Puch 2-/3-speed engine
Article no.: STT49611

Clutch Pull Bearing Schmitt reinforced with thrust bearing Puch 2-/3-speed engine

36,00 €
Currently not in stock
UFO
Swingarm Slider / Chain Guide Set KX 450 2024 green UFO
Article no.: UF-KA04768#026

Swingarm Slider / Chain Guide Set KX 450 2024 green UFO

25,00 €
Currently not in stock
UFO
Swingarm Slider / Chain Guide Set KX 450 2024 black UFO
Article no.: UF-KA04768#001

Swingarm Slider / Chain Guide Set KX 450 2024 black UFO

25,00 €
Currently not in stock
UFO
Chain Roller Yamaha YZF 250 / 450 2018-2023 black
Article no.: UF-YA04864#001

Chain Roller Yamaha YZF 250 / 450 2018-2023 black

13,00 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2006 black UFO
Article no.: UF-YA04804@089

Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2006 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2006 black UFO
Article no.: UF-YA04804@001

Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2006 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2005 blue UFO
Article no.: UF-YA04803@089

Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2005 blue UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2005 black UFO
Article no.: UF-YA04803@001

Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2005 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2004 black UFO
Article no.: UF-YA04802@001

Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2004 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 after 2015 blue UFO
Article no.: UF-YA04805@089

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 after 2015 blue UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 after 2015 black UFO
Article no.: UF-YA04805@001

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 after 2015 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2009-2014 blue UFO
Article no.: UF-YA04807@089

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2009-2014 blue UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2009-2014 black UFO
Article no.: UF-YA04807@001

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2009-2014 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2005-2008 blue UFO
Article no.: UF-YA04801@089

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2005-2008 blue UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2005-2008 black UFO
Article no.: UF-YA04801@001

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2005-2008 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2003-2004 black UFO
Article no.: UF-YA04800@001

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2003-2004 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2002-2002 black UFO
Article no.: UF-YA03899@001

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 2002-2002 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 1997-2001 black UFO
Article no.: UF-YA03898@001

Chain Guide / Swingarm Slider Set Yamaha YZ 125 / 250 1997-2001 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Suzuki RM-Z 450 2007 yellow UFO
Article no.: UF-SU04925@102

Chain Guide / Swingarm Slider Set Suzuki RM-Z 450 2007 yellow UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Suzuki RM-Z 450 2007 black UFO
Article no.: UF-SU04925@001

Chain Guide / Swingarm Slider Set Suzuki RM-Z 450 2007 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Suzuki RM-Z 250 after 2019 yellow UFO
Article no.: UF-SU04946@102

Chain Guide / Swingarm Slider Set Suzuki RM-Z 250 after 2019 yellow UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Suzuki RM-Z 250 after 2019 black UFO
Article no.: UF-SU04946@001

Chain Guide / Swingarm Slider Set Suzuki RM-Z 250 after 2019 black UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Suzuki RM 125 / 250 2001-2008 yellow UFO
Article no.: UF-SU04924@102

Chain Guide / Swingarm Slider Set Suzuki RM 125 / 250 2001-2008 yellow UFO

25,50 €
Currently not in stock
UFO
Chain Guide / Swingarm Slider Set Suzuki RM 125 / 250 2001-2008 black UFO
Article no.: UF-SU04924@001

Chain Guide / Swingarm Slider Set Suzuki RM 125 / 250 2001-2008 black UFO

25,50 €
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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