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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
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AFAM Algi Aprilia Avoc Beta Bidalot Buzzetti Conti CPI 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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AFAM
Chain Kit AFAM 16x57 Yamaha TDR 125 1997 - 2002
Article no.: AFAMKS-A-28

Chain Kit AFAM 16x57 Yamaha TDR 125 1997 - 2002

95,50 €
In stock soon
AFAM
Chain Kit AFAM 14x49 Yamaha SR 125 1992 - 2002
Article no.: AFAMKS-A-24

Chain Kit AFAM 14x49 Yamaha SR 125 1992 - 2002

45,00 €
In stock soon
AFAM
Chain Kit AFAM 13x38 Honda TRX 250 X
Article no.: AFAMKS-A-11

Chain Kit AFAM 13x38 Honda TRX 250 X

74,50 €
In stock soon
YCF
Swingarm Slider HQ black Pit Bike YCF SP3 / Bigy
Article no.: YCF-110-1018-04

Swingarm Slider HQ black Pit Bike YCF SP3 / Bigy

48,00 €
In stock soon
YCF
Secondary Transmission d.17mm Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start
Article no.: MBA00K040

Secondary Transmission d.17mm Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start

52,00 €
In stock soon
YCF
Primary Transmission Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start
Article no.: MBA00K030

Primary Transmission Pit Bike YX 88cc - 125cc semi-automatic / 125cc idle start

52,00 €
In stock soon
Standard Parts
Front Sprocket 14 teeth Puch Maxi
Article no.: MOF-28889

Front Sprocket 14 teeth Puch Maxi

5,60 €
In stock soon
Standard Parts
Front Sprocket 10 teeth Puch Maxi
Article no.: MOF-28886

Front Sprocket 10 teeth Puch Maxi

3,30 €
In stock soon
Doppler
Chain Kit aluminium black 13x53 - 420 Doppler Beta RR
Article no.: CGN504012

Chain Kit aluminium black 13x53 - 420 Doppler Beta RR

99,00 €
In stock soon
Stage6
Chain HQ Stage6 420 / 140 links orange
Article no.: S6-2011001
7

Chain HQ Stage6 420 / 140 links orange

32,50 €
Currently not in stock
RRP
35,50 €
-8% Discount
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Aprilia SX 50
Article no.: S6-2119334/OR

Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Aprilia SX 50

84,36 €
Currently not in stock
88,80 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Aprilia SX 50
Article no.: S6-2119333/OR

Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Aprilia SX 50

83,69 €
Currently not in stock
88,10 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Aprilia SX 50
Article no.: S6-2119334/BL

Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Aprilia SX 50

84,36 €
Currently not in stock
88,80 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Aprilia SX 50
Article no.: S6-2119333/BL

Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Aprilia SX 50

83,69 €
Currently not in stock
88,10 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Rieju MRT
Article no.: S6-2118833/OR

Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Rieju MRT

84,55 €
Currently not in stock
89,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Rieju MRT
Article no.: S6-2118834/OR

Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Rieju MRT

84,74 €
Currently not in stock
89,20 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Rieju MRT
Article no.: S6-2118833/BL

Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Rieju MRT

84,55 €
Currently not in stock
89,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Rieju MRT
Article no.: S6-2118834/BL

Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Rieju MRT

84,74 €
Currently not in stock
89,20 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Derbi Senda X-treme
Article no.: S6-2119324/OR

Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Derbi Senda X-treme

84,36 €
Currently not in stock
88,80 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Derbi Senda X-treme
Article no.: S6-2119323/OR

Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Derbi Senda X-treme

83,69 €
Currently not in stock
88,10 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Derbi Senda X-treme
Article no.: S6-2119324/BL

Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Derbi Senda X-treme

84,36 €
Currently not in stock
88,80 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Derbi Senda X-treme
Article no.: S6-2119323/BL

Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Derbi Senda X-treme

83,69 €
Currently not in stock
88,10 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Peugeot / Rieju
Article no.: S6-2118823/OR

Chain Kit 13x53 - 420 Stage6 aluminium CNC orange Peugeot / Rieju

84,55 €
Currently not in stock
89,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Peugeot / Rieju
Article no.: S6-2118824/OR

Chain Kit 14x53 - 420 Stage6 aluminium CNC orange Peugeot / Rieju

84,74 €
Currently not in stock
89,20 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Peugeot / Rieju
Article no.: S6-2118823/BL

Chain Kit 13x53 - 420 Stage6 aluminium CNC blue Peugeot / Rieju

84,55 €
Currently not in stock
89,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Peugeot / Rieju
Article no.: S6-2118824/BL

Chain Kit 14x53 - 420 Stage6 aluminium CNC blue Peugeot / Rieju

84,74 €
Currently not in stock
89,20 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 alu CNC Orange Derbi DRD Pro
Article no.: S6-2119314/OR

Chain Kit 14x53 - 420 Stage6 alu CNC Orange Derbi DRD Pro

84,36 €
Currently not in stock
88,80 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC Orange Derbi DRD Pro
Article no.: S6-2119313/OR

Chain Kit 13x53 - 420 Stage6 aluminium CNC Orange Derbi DRD Pro

83,69 €
Currently not in stock
88,10 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 alu CNC Blue Derbi DRD Pro
Article no.: S6-2119314/BL

Chain Kit 14x53 - 420 Stage6 alu CNC Blue Derbi DRD Pro

84,36 €
Currently not in stock
88,80 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 alu CNC Blue Derbi DRD Pro
Article no.: S6-2119313/BL

Chain Kit 13x53 - 420 Stage6 alu CNC Blue Derbi DRD Pro

83,69 €
Currently not in stock
88,10 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC Orange Beta RR
Article no.: S6-2118813/OR

Chain Kit 13x53 - 420 Stage6 aluminium CNC Orange Beta RR

84,55 €
Currently not in stock
89,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC Orange Beta RR
Article no.: S6-2118814/OR

Chain Kit 14x53 - 420 Stage6 aluminium CNC Orange Beta RR

84,74 €
Currently not in stock
89,20 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC Blue Beta RR
Article no.: S6-2118813/BL

Chain Kit 13x53 - 420 Stage6 aluminium CNC Blue Beta RR

84,55 €
Currently not in stock
89,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC Blue Beta RR
Article no.: S6-2118814/BL

Chain Kit 14x53 - 420 Stage6 aluminium CNC Blue Beta RR

84,74 €
Currently not in stock
89,20 €
-5% Set-Rabatt
Standard Parts
Chain Roller 10mm - red Pit Bike / Dirt Bike
Article no.: MB7512

Chain Roller 10mm - red Pit Bike / Dirt Bike

5,90 €
Currently not in stock
Standard Parts
Rear Sprocket 428 Pit Bike / Dirt Bike
Article no.: MB_REARSPRO428_PIT/SIZE

Rear Sprocket 428 Pit Bike / Dirt Bike

from 11,50 €
Currently not in stock
Standard Parts
Chain Guide Derbi / Aprilia / Gilera blue
Article no.: MF89.00191

Chain Guide Derbi / Aprilia / Gilera blue

24,50 €
Currently not in stock
Str8
Front Sprocket 420 green Minarelli AM6
Article no.: STR-71GREENAM6

Front Sprocket 420 green Minarelli AM6

from 8,80 €
Currently not in stock
RMS
Gear Selector Cover RMS chrome Vespa PX 125 - 150cc / PE 200cc
Article no.: R142580110

Gear Selector Cover RMS chrome Vespa PX 125 - 150cc / PE 200cc

8,40 €
Currently not in stock
Standard Parts
Chain Kit 11x52 - 420 d=62mm 5 holes Peugeot XP7 / XR7
Article no.: CGN486687

Chain Kit 11x52 - 420 d=62mm 5 holes Peugeot XP7 / XR7

49,00 €
Currently not in stock
Beta
Chain Tensioner Beta RR 50 (x1)
Article no.: OE-BET29.06201.057

Chain Tensioner Beta RR 50 (x1)

11,00 €
Currently not in stock
AFAM
Chain Kit Rieju MRT after 2018 Afam 11x62
Article no.: CGN518452

Chain Kit Rieju MRT after 2018 Afam 11x62

74,00 €
Currently not in stock
Polini
Secondary Transmission Polini 15/39 Honda SH 125/150i before 2012
Article no.: P202.1408

Secondary Transmission Polini 15/39 Honda SH 125/150i before 2012

115,00 €
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
YCF
Chain Tensioners d.15mm Pit Bike YCF Lite
Article no.: YCF-110-1016-01

Chain Tensioners d.15mm Pit Bike YCF Lite

13,00 €
Currently not in stock
YCF
Chain Tensioners d.15mm YCF Pit Bike / Dirt Bike
Article no.: YCF-110-11-09

Chain Tensioners d.15mm YCF Pit Bike / Dirt Bike

16,50 €
Currently not in stock
YCF Factory
Rear Sprocket aluminium CNC 420 - 39 teeth - 4 screws YCF Pit Bike
Article no.: MBCA06R.39/COLOR

Rear Sprocket aluminium CNC 420 - 39 teeth - 4 screws YCF Pit Bike

41,50 €
Currently not in stock
YCF
Chain Guard Pit Bike YCF 50 cc
Article no.: YCF-50-0600-02

Chain Guard Pit Bike YCF 50 cc

16,50 €
Currently not in stock
Malossi
Front Sprocket 17 teeth Malossi Puch Maxi
Article no.: M612499B

Front Sprocket 17 teeth Malossi Puch Maxi

12,00 €
Currently not in stock
Malossi
Input Shaft Malossi Racing, 10-15-18-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)
Article no.: M6716207

Input Shaft Malossi Racing, 10-15-18-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)

174,00 €
Currently not in stock
Malossi
Input Shaft Malossi Sport, 10-14-17-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)
Article no.: M6716696

Input Shaft Malossi Sport, 10-14-17-20 teeth, Vespa Smallframe (ET3 / ETS / PK / PK XL / V50)

167,00 €
Currently not in stock
Malossi
Primary Transmission Malossi 24/63 Vespa Cosa / PXE 200cc
Article no.: M675235

Primary Transmission Malossi 24/63 Vespa Cosa / PXE 200cc

172,00 €
Currently not in stock
Malossi
Primary Transmission Malossi 23/64 Vespa Cosa / PX 125cc
Article no.: M673730

Primary Transmission Malossi 23/64 Vespa Cosa / PX 125cc

172,00 €
Currently not in stock
Malossi
Secondary Gears Malossi Piaggio Zip 50 4T 15/55
Article no.: M6711135

Secondary Gears Malossi Piaggio Zip 50 4T 15/55

88,00 €
Currently not in stock
Malossi
Secondary Gears Malossi Piaggio Liberty 125 15/47
Article no.: M6711445

Secondary Gears Malossi Piaggio Liberty 125 15/47

66,00 €
Currently not in stock
Malossi
Primary Transmission Malossi 20/72 Aprilia Scar TPSIO 125-150cc
Article no.: M6711539

Primary Transmission Malossi 20/72 Aprilia Scar TPSIO 125-150cc

154,00 €
Currently not in stock
Malossi
Primary Transmission Malossi 20/46 Aprilia Leonardo 125-150cc
Article no.: M6711360

Primary Transmission Malossi 20/46 Aprilia Leonardo 125-150cc

90,00 €
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
Moose Racing
Chain 520-RXP PRO-MX 96 links gold
Article no.: MRM5740096

Chain 520-RXP PRO-MX 96 links gold

73,00 €
Currently not in stock
Moose Racing
Screw / Bolt Kit Rear Sprocket
Article no.: MR24011277

Screw / Bolt Kit Rear Sprocket

11,50 €
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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