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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 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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Top Performances
Secondary Gears 13/42 Top Performances Minarelli
Article no.: TCI07452

Secondary Gears 13/42 Top Performances Minarelli

59,00 €
In stock soon
Doppler
Chain Kit steel 13x53 - 428 Doppler Origin Beta RR
Article no.: CGN515037

Chain Kit steel 13x53 - 428 Doppler Origin Beta RR

69,50 €
In stock soon
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Origin Fantic XM / XE
Article no.: CGN534140

Rear Sprocket steel 53 teeth - 420 Doppler Origin Fantic XM / XE

30,50 €
In stock soon
Doppler
Rear Sprocket steel 53 teeth - 428 Doppler Origin Sherco 50
Article no.: CGN528468

Rear Sprocket steel 53 teeth - 428 Doppler Origin Sherco 50

30,50 €
In stock soon
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Origin Beta RR (02 - 05) and Caballero
Article no.: CGN528469

Rear Sprocket steel 53 teeth - 420 Doppler Origin Beta RR (02 - 05) and Caballero

30,50 €
In stock soon
Standard Parts
Rear Sprocket steel 53 teeth 420 CPI SM
Article no.: MF89.00373

Rear Sprocket steel 53 teeth 420 CPI SM

18,00 €
In stock soon
Standard Parts
Gear Selector Fork primary shaft type AM6 Generic / CPI / KSR
Article no.: MF60.19505

Gear Selector Fork primary shaft type AM6 Generic / CPI / KSR

14,50 €
In stock soon
Standard Parts
Gear Selector Shaft Generic / CPI / KSR
Article no.: MF60.19503

Gear Selector Shaft Generic / CPI / KSR

15,00 €
In stock soon
Str8
Clutch Cable Holder Derbi STR8 Black
Article no.: STR-021.03/BK

Clutch Cable Holder Derbi STR8 Black

5,00 €
In stock soon
Rieju
Chain Tensioner Rieju MRT (x2)
Article no.: OE-RIE0000.640.5010

Chain Tensioner Rieju MRT (x2)

18,00 €
In stock soon
Str8
Clutch Cable Holder Derbi STR8 Red
Article no.: STR-021.03/RE

Clutch Cable Holder Derbi STR8 Red

4,50 €
In stock soon
Str8
Clutch Cable Holder Derbi STR8 Blue
Article no.: STR-021.03/BL

Clutch Cable Holder Derbi STR8 Blue

4,50 €
In stock soon
Doppler
Chain Kit Doppler 13x53 - 428 Sherco 50 Alu Black
Article no.: CGN526754

Chain Kit Doppler 13x53 - 428 Sherco 50 Alu Black

102,00 €
In stock soon
Doppler
Rear Sprocket Doppler 53 teeth - 428 aluminum black Sherco 50
Article no.: CGN517733

Rear Sprocket Doppler 53 teeth - 428 aluminum black Sherco 50

69,50 €
In stock soon
Standard Parts
Rear Sprocket Premium 58 teeth - 420 black Fantic XM50 /XE50 after 2018
Article no.: IP49517

Rear Sprocket Premium 58 teeth - 420 black Fantic XM50 /XE50 after 2018

43,00 €
In stock soon
Standard Parts
Chain type 25H 136 links Pocket Bike Pista
Article no.: SP-23358

Chain type 25H 136 links Pocket Bike Pista

7,30 €
In stock soon
Standard Parts
Chain Kit 14x60 - 420 Afam Rieju MRT
Article no.: CGN516910

Chain Kit 14x60 - 420 Afam Rieju MRT

75,00 €
In stock soon
Doppler
Chain Kit steel 13x53 Doppler Origin Rieju MRT
Article no.: CGN517747

Chain Kit steel 13x53 Doppler Origin Rieju MRT

79,00 €
In stock soon
Doppler
Chain Kit steel Doppler 14x53 - 420 Origin Aprilia SX 50
Article no.: CGN515042

Chain Kit steel Doppler 14x53 - 420 Origin Aprilia SX 50

79,00 €
In stock soon
Doppler
Chain Kit steel 14x53 - 420 Doppler Origin Derbi Senda X-treme
Article no.: CGN515041

Chain Kit steel 14x53 - 420 Doppler Origin Derbi Senda X-treme

79,00 €
In stock soon
Doppler
Chain Kit steel 13x53 - 420 Doppler Origin Yamaha TZR 50
Article no.: CGN515038

Chain Kit steel 13x53 - 420 Doppler Origin Yamaha TZR 50

79,00 €
In stock soon
Doppler
Chain Kit steel 13x53 - 420 Doppler Origin Beta RR
Article no.: CGN515036

Chain Kit steel 13x53 - 420 Doppler Origin Beta RR

79,00 €
In stock soon
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Origin Beta RR
Article no.: CGN509883

Rear Sprocket steel 53 teeth - 420 Doppler Origin Beta RR

34,50 €
In stock soon
Top Performances
Secondary Gears 15/41 Top Performances Yamaha Aerox / BW's
Article no.: T9909520
7

Secondary Gears 15/41 Top Performances Yamaha Aerox / BW's

95,00 €
In stock soon
Doppler
Rear Sprocket 53 teeth - 428 Doppler black steel Sherco Enduro 50
Article no.: CGN509881

Rear Sprocket 53 teeth - 428 Doppler black steel Sherco Enduro 50

34,50 €
In stock soon
AFAM
Front Sprocket AFAM 14 teeth 420 Cagiva Mito / Derbi Senda / GPR / Fenix
Article no.: AFAM49100-14

Front Sprocket AFAM 14 teeth 420 Cagiva Mito / Derbi Senda / GPR / Fenix

7,20 €
In stock soon
AFAM
Front Sprocket AFAM 13 teeth 415 Aprilia RS 50 93 - 98
Article no.: AFAM94108-13

Front Sprocket AFAM 13 teeth 415 Aprilia RS 50 93 - 98

7,50 €
In stock soon
AFAM
Chain Kit AFAM 15x53 - 420 Derbi Senda X-treme
Article no.: AFAMKS-A-173

Chain Kit AFAM 15x53 - 420 Derbi Senda X-treme

44,00 €
In stock soon
AFAM
Chain Kit AFAM 11x62 Yamaha DT / Peugeot XP6
Article no.: AFAMKS-A-125

Chain Kit AFAM 11x62 Yamaha DT / Peugeot XP6

49,50 €
In stock soon
AFAM
Chain Kit AFAM 11x51 Beta RR
Article no.: AFAMKS-A-114

Chain Kit AFAM 11x51 Beta RR

43,00 €
In stock soon
AFAM
Rear Sprocket steel 53 teeth - 420 Afam Derbi Senda
Article no.: AFAM92114-53

Rear Sprocket steel 53 teeth - 420 Afam Derbi Senda

20,50 €
In stock soon
AFAM
Rear Sprocket steel 53 teeth - 420 Afam Rieju MRT
Article no.: AFAM47103-53

Rear Sprocket steel 53 teeth - 420 Afam Rieju MRT

20,50 €
In stock soon
AFAM
Rear Sprocket steel 50 teeth - 420 AFAM Beta RR
Article no.: AFAM38101-50

Rear Sprocket steel 50 teeth - 420 AFAM Beta RR

20,00 €
In stock soon
AFAM
Rear Sprocket steel 47 teeth - 420 Afam Rieju MRT
Article no.: AFAM47103-47

Rear Sprocket steel 47 teeth - 420 Afam Rieju MRT

17,00 €
In stock soon
Peugeot
Countershaft (for input shaft clutch with 12 teeth) Peugeot horizontal
Article no.: OE-PEU771884

Countershaft (for input shaft clutch with 12 teeth) Peugeot horizontal

140,00 €
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
Doppler
Chain Kit aluminium blue 13x53 - 420 Rieju MRT
Article no.: CGN509944

Chain Kit aluminium blue 13x53 - 420 Rieju MRT

99,00 €
In stock soon
Doppler
Chain Kit aluminium black 13x53 - 420 Doppler Rieju MRT / Yamaha DT
Article no.: CGN503783

Chain Kit aluminium black 13x53 - 420 Doppler Rieju MRT / Yamaha DT

99,00 €
In stock soon
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC yellow Peugeot / Rieju
Article no.: S6-2118824/YE

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

71,72 €
Currently not in stock
75,50 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC green Peugeot / Rieju
Article no.: S6-2118824/GR

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

71,72 €
Currently not in stock
75,50 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC green Derbi DRD Pro
Article no.: S6-2119314/GR

Chain Kit 14x53 - 420 Stage6 aluminium CNC green Derbi DRD Pro

88,92 €
Currently not in stock
93,60 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC green Derbi DRD Pro
Article no.: S6-2119313/GR

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

88,92 €
Currently not in stock
93,60 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC yellow Beta RR
Article no.: S6-2118814/YE

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

85,50 €
Currently not in stock
90,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC green Beta RR
Article no.: S6-2118814/GR

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

85,50 €
Currently not in stock
90,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC yellow Rieju MRT
Article no.: S6-2118834/YE

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

85,50 €
Currently not in stock
90,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC green Rieju MRT
Article no.: S6-2118834/GR

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

85,50 €
Currently not in stock
90,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC black Rieju MRT
Article no.: S6-2118834/BK

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

80,75 €
Currently not in stock
85,00 €
-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

90,72 €
Currently not in stock
95,50 €
-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

82,17 €
Currently not in stock
86,50 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC red Rieju MRT
Article no.: S6-2118834/RE

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

86,45 €
Currently not in stock
91,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC black Peugeot / Rieju
Article no.: S6-2118824/BK

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

75,52 €
Currently not in stock
79,50 €
-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

85,50 €
Currently not in stock
90,00 €
-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

82,17 €
Currently not in stock
86,50 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC red Peugeot / Rieju
Article no.: S6-2118824/RE

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

67,45 €
Currently not in stock
71,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC Black Beta RR
Article no.: S6-2118814/BK

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

75,52 €
Currently not in stock
79,50 €
-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

85,50 €
Currently not in stock
90,00 €
-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

87,40 €
Currently not in stock
92,00 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC Red Beta RR
Article no.: S6-2118814/RE

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

81,22 €
Currently not in stock
85,50 €
-5% Set-Rabatt
Malossi
Primary Gears Malossi Malaguti F12 13/44
Article no.: M6711664

Primary Gears Malossi Malaguti F12 13/44

70,00 €
Currently not in stock
Moose Racing
Oil Seal Set countershaft Moose Racing YZ 125 after 2005
Article no.: MR09350448

Oil Seal Set countershaft Moose Racing YZ 125 after 2005

21,50 €
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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