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Transmission

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Bracket Bushings & Spacers Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Circlip Clutch accessories Clutch gear Clutch kit Clutch release lever Clutch springs CVT sliders 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 Spring Transmission Transmission accessories Transmission gear Washer Wheel axle Woodruff key Bearing ball Cable guide Fuel cap Gear selector shaft Overflow hose Pedal shaft Sprocket screws
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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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
RRP
30,00 €
-10% Discount
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
RRP
111,00 €
-9% Discount
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
RRP
164,00 €
-16% Discount
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
RRP
219,00 €
-16% Discount
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
Standard Parts
Sprocket Washer Zündapp 3-speed
Article no.: 31524

Sprocket Washer Zündapp 3-speed

1,10 €
Currently not in stock
Standard Parts
Countershaft 4-speed 22-18-14-10 teeth Vespa 50-90 / Primavera / ET3 / PK / PK XL
Article no.: 36476
1

Countershaft 4-speed 22-18-14-10 teeth Vespa 50-90 / Primavera / ET3 / PK / PK XL

76,00 €
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
Standard Parts
Rear Sprocket Premium 45 teeth 415 Puch Maxi L / L2 (spoke wheel rim Sachs 94mm)
Article no.: MOF-53312

Rear Sprocket Premium 45 teeth 415 Puch Maxi L / L2 (spoke wheel rim Sachs 94mm)

42,00 €
Currently not in stock
Standard Parts
Rear Sprocket Premium 44 teeth 415 Puch Ranger / MC 50 / Condor / Cobra T
Article no.: MOF-53301

Rear Sprocket Premium 44 teeth 415 Puch Ranger / MC 50 / Condor / Cobra T

34,00 €
Currently not in stock
Standard Parts
Chain Guard reinforced Motorhispania / Peugeot XPS aluminium black
Article no.: STR-730.13/BK

Chain Guard reinforced Motorhispania / Peugeot XPS aluminium black

21,50 €
Currently not in stock
Standard Parts
Rear Sprocket steel 60 teeth 420 Yamaha DT X SM
Article no.: SP-37416

Rear Sprocket steel 60 teeth 420 Yamaha DT X SM

21,00 €
Currently not in stock
Standard Parts
Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs green
Article no.: MOF-43010/GR

Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs green

10,00 €
Currently not in stock
Standard Parts
Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs gold
Article no.: MOF-43010/GO

Chain Tensioner Set 12mm aluminium Puch / Simson / Kreidler / Sachs gold

9,80 €
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 blue UFO
Article no.: UF-YA04804@089

Chain Guide / Swingarm Slider Set Yamaha YZF 250 / 450 2006 blue 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
Swingarm Slider Yamaha YZF 250 / 450 2004-2005 blue UFO
Article no.: UF-YA03871#089

Swingarm Slider Yamaha YZF 250 / 450 2004-2005 blue UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZF 250 / 450 2004-2005 black UFO
Article no.: UF-YA03871#001

Swingarm Slider Yamaha YZF 250 / 450 2004-2005 black UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 125 / 250 2003-2008 blue UFO
Article no.: UF-YA03870#089

Swingarm Slider Yamaha YZ 125 / 250 2003-2008 blue UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 125 / 250 2003-2008 black UFO
Article no.: UF-YA03870#001

Swingarm Slider Yamaha YZ 125 / 250 2003-2008 black UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 125 / 250 1997-2002 blue UFO
Article no.: UF-YA03808#089

Swingarm Slider Yamaha YZ 125 / 250 1997-2002 blue UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 125 / 250 1997-2002 black UFO
Article no.: UF-YA03808#001

Swingarm Slider Yamaha YZ 125 / 250 1997-2002 black UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 125 / 250 1989-1992 UFO neutral
Article no.: UF-YA02820#280

Swingarm Slider Yamaha YZ 125 / 250 1989-1992 UFO neutral

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 85 2002-2018 neutral UFO
Article no.: UF-YA03894#280

Swingarm Slider Yamaha YZ 85 2002-2018 neutral UFO

16,50 €
Currently not in stock
UFO
Swingarm Slider Yamaha YZ 80 1993-2001 neutral UFO
Article no.: UF-YA03851#280

Swingarm Slider Yamaha YZ 80 1993-2001 neutral UFO

16,50 €
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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