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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
Front Sprocket 13 teeth Puch Maxi
Article no.: MOF-28890

Front Sprocket 13 teeth Puch Maxi

3,80 €
In stock
Standard Parts
Front Sprocket 12 teeth Puch Maxi
Article no.: MOF-28888

Front Sprocket 12 teeth Puch Maxi

3,50 €
In stock
Standard Parts
Front Sprocket 11 teeth Puch Maxi
Article no.: MOF-28887

Front Sprocket 11 teeth Puch Maxi

3,50 €
In stock
Standard Parts
Front Sprocket 10 teeth Puch Maxi
Article no.: MOF-28886

Front Sprocket 10 teeth Puch Maxi

3,30 €
In stock
Standard Parts
Rear Sprocket 45 teeth Puch Maxi silver
Article no.: MOF-34241

Rear Sprocket 45 teeth Puch Maxi silver

12,00 €
In stock
Doppler
Chain Kit aluminium Neochrome 13x53 - 420 Rieju MRT / Yamaha DT
Article no.: CGN509945

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

109,00 €
In stock
Doppler
Chain Kit aluminium blue 13x53 - 420 Rieju MRT
Article no.: CGN509944

Chain Kit aluminium blue 13x53 - 420 Rieju MRT

99,00 €
In stock
Doppler
Chain Kit aluminium Neochrome 14x53 - 420 Doppler Derbi GPR / Aprilia RS4
Article no.: CGN509943

Chain Kit aluminium Neochrome 14x53 - 420 Doppler Derbi GPR / Aprilia RS4

109,00 €
In stock
Doppler
Chain Kit aluminium Neochrome 14x53 - 420 Doppler Derbi Senda X-treme
Article no.: CGN509942

Chain Kit aluminium Neochrome 14x53 - 420 Doppler Derbi Senda X-treme

109,00 €
In stock
Doppler
Chain Kit aluminium Neochrome 13x53 - 428 Doppler Beta RR
Article no.: CGN509940

Chain Kit aluminium Neochrome 13x53 - 428 Doppler Beta RR

98,50 €
In stock
109,00 €
-10% Discount
Doppler
Chain Kit aluminium Neochrome 13x53 - 420 Doppler Beta RR
Article no.: CGN509939

Chain Kit aluminium Neochrome 13x53 - 420 Doppler Beta RR

109,00 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler Alu CNC neochrome Derbi DRD Pro
Article no.: CGN505502

Rear Sprocket 53 teeth - 420 Doppler Alu CNC neochrome Derbi DRD Pro

34,00 €
In stock
RRP
69,50 €
-51% Discount
Doppler
Rear Sprocket 53 teeth - 420 Doppler Alu CNC Neochrome Beta RR
Article no.: CGN505501

Rear Sprocket 53 teeth - 420 Doppler Alu CNC Neochrome Beta RR

69,50 €
In stock
Doppler
Chain Kit aluminium black 13x53 - 428 Doppler Beta RR
Article no.: CGN504014

Chain Kit aluminium black 13x53 - 428 Doppler Beta RR

102,00 €
In stock
Doppler
Chain Kit aluminium red 13x53 - 428 Doppler Beta RR
Article no.: CGN504013

Chain Kit aluminium red 13x53 - 428 Doppler Beta RR

90,00 €
In stock
Sale
Doppler
Chain Kit aluminium black 13x53 - 428 Doppler Sherco 50cc
Article no.: CGN504009

Chain Kit aluminium black 13x53 - 428 Doppler Sherco 50cc

90,00 €
In stock
101,00 €
-11% Discount
Sale
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
Doppler
Chain Kit aluminium red 14x53 - 420 Doppler Derbi Senda DRD
Article no.: CGN503777

Chain Kit aluminium red 14x53 - 420 Doppler Derbi Senda DRD

54,00 €
In stock
RRP
99,00 €
-45% Discount
MotoForce
Rear Sprocket steel 52 teeth - 420 Rieju MRT
Article no.: MF89.00323

Rear Sprocket steel 52 teeth - 420 Rieju MRT

18,50 €
In stock soon
MotoForce
Gearbox AM6
Article no.: MF60.18861

Gearbox AM6

91,00 €
In stock soon
Top Performances
Gearwheel 3rd gear secondary shaft Top Performances T29 AM6 V2
Article no.: TAM00012

Gearwheel 3rd gear secondary shaft Top Performances T29 AM6 V2

28,50 €
In stock soon
Top Performances
Gear Wheel 6th gear Top Performances (2nd series) AM6
Article no.: T9931910

Gear Wheel 6th gear Top Performances (2nd series) AM6

58,00 €
In stock soon
Standard Parts
Chain reinforced 106 links D.415 Doppler gold
Article no.: CGN504286

Chain reinforced 106 links D.415 Doppler gold

12,00 €
In stock soon
Doppler
Chain Master Link Doppler 420 black
Article no.: CGN504529

Chain Master Link Doppler 420 black

3,20 €
In stock soon
AFAM
Chain reinforced 134 links 428 gold
Article no.: AFAM485375

Chain reinforced 134 links 428 gold

28,50 €
In stock soon
GY6
Gear input shaft (clutch) - GY6 50cc 139QMB
Article no.: OE-GY6BT13868

Gear input shaft (clutch) - GY6 50cc 139QMB

12,50 €
In stock soon
CPI
Driveshaft / Wheel Axle - China 2-stroke, CPI, Keeway
Article no.: OE-CPI20914

Driveshaft / Wheel Axle - China 2-stroke, CPI, Keeway

24,00 €
In stock soon
Standard Parts
Rear Sprocket 56 teeth Peugeot 103 SP / MV (RYS rims d.94mm)
Article no.: CGN2936
1

Rear Sprocket 56 teeth Peugeot 103 SP / MV (RYS rims d.94mm)

16,00 €
In stock soon
Standard Parts
Retaining Plate f. sprocket Derbi Euro 2 / Euro 3
Article no.: CGN484861
2

Retaining Plate f. sprocket Derbi Euro 2 / Euro 3

4,50 €
In stock soon
Top Performances
Gear Selector Fork Set forged Top Performances AM6
Article no.: TAM00046

Gear Selector Fork Set forged Top Performances AM6

77,00 €
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 - 428 Doppler Origin Sherco 50
Article no.: CGN528468

Rear Sprocket steel 53 teeth - 428 Doppler Origin Sherco 50

30,50 €
In stock soon
Standard Parts
Chain Tensioner Roll Derbi Senda
Article no.: MF89.00160

Chain Tensioner Roll Derbi Senda

13,00 €
In stock soon
AFAM
Chain Kit Sherco SM-R Afam 11x60 - 428 (original gear ratio)
Article no.: AFAM205405

Chain Kit Sherco SM-R Afam 11x60 - 428 (original gear ratio)

93,00 €
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
Doppler
Chain Kit Doppler 13x53 - 428 Sherco 50 Alu Blue
Article no.: CGN526753

Chain Kit Doppler 13x53 - 428 Sherco 50 Alu Blue

102,00 €
In stock soon
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Rieju MRT
Article no.: CGN509885

Rear Sprocket steel 53 teeth - 420 Doppler Rieju MRT

34,50 €
In stock soon
Top Performances
Primary Gears 15/50 Top Performances Yamaha Aerox / BW's
Article no.: T9913300
1

Primary Gears 15/50 Top Performances Yamaha Aerox / BW's

72,50 €
In stock soon
AFAM
Front Sprocket Afam 14 teeth YZ 125 after 2005
Article no.: 1075401003

Front Sprocket Afam 14 teeth YZ 125 after 2005

14,50 €
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
Standard Parts
Pedal Shaft Puch Maxi NM
Article no.: MOF-40226

Pedal Shaft Puch Maxi NM

24,00 €
In stock soon
Doppler
Chain Kit aluminium blue 13x53 - 428 Doppler Sherco 50cc
Article no.: CGN509947

Chain Kit aluminium blue 13x53 - 428 Doppler Sherco 50cc

99,00 €
In stock soon
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC black Rieju MRT
Article no.: S6-2118833/BK

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

80,46 €
Currently not in stock
84,70 €
-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

81,22 €
Currently not in stock
85,50 €
-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

90,91 €
Currently not in stock
95,70 €
-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

91,67 €
Currently not in stock
96,50 €
-5% Set-Rabatt
Stage6
Chain Kit 14x53 - 420 Stage6 aluminium CNC black Derbi Senda X-treme
Article no.: S6-2119324/BK

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

79,42 €
Currently not in stock
83,60 €
-5% Set-Rabatt
Stage6
Chain Kit 13x53 - 420 Stage6 aluminium CNC black Derbi Senda X-treme
Article no.: S6-2119323/BK

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

79,61 €
Currently not in stock
83,80 €
-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

89,87 €
Currently not in stock
94,60 €
-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

90,06 €
Currently not in stock
94,80 €
-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

86,16 €
Currently not in stock
90,70 €
-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

86,92 €
Currently not in stock
91,50 €
-5% Set-Rabatt
Malossi
Primary Gears Malossi Honda Bali 17/39
Article no.: M677758

Primary Gears Malossi Honda Bali 17/39

60,00 €
Currently not in stock
Malossi
Secondary Gears Malossi 14/43 Gilera Runner 180cc
Article no.: M679925

Secondary Gears Malossi 14/43 Gilera Runner 180cc

88,00 €
Currently not in stock
Malossi
Secondary Gears Malossi 15/41 Gilera Runner 125-150cc before 1998
Article no.: M679614

Secondary Gears Malossi 15/41 Gilera Runner 125-150cc before 1998

106,00 €
Currently not in stock
Malossi
Secondary Gears Malossi 15/41 Gilera Runner 125-150cc
Article no.: M6711079
1

Secondary Gears Malossi 15/41 Gilera Runner 125-150cc

106,00 €
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
Moose Racing
Swingarm Slider Moose Racing Beta RR black
Article no.: MR12311060

Swingarm Slider Moose Racing Beta RR black

81,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta RR 50 teeth red
Article no.: MR12111867

Rear Sprocket aluminium 520 Moose Racing Beta RR 50 teeth red

39,50 €
Currently not in stock
Moose Racing
Rear Sprocket aluminium 520 Moose Racing Beta RR 42 teeth red
Article no.: MR12111859

Rear Sprocket aluminium 520 Moose Racing Beta RR 42 teeth red

39,50 €
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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