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Transmission

(586 products)
50cc Bike Gearboxes Chains and Sprockets Gear Drives Transmission Accessories
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Chain Chain accessories Chain guard Chain guide Chain kit Chain master link Chain roller Chain slider Chain tensioner Clutch accessories Clutch kit Crankshaft accessories Fairing Front sprocket Gearbox Gearbox accessories Gearbox bearing kit Chain rear sprocket Screws other Transmission accessories Transmission gear
Brand
AFAM Avoc Beta Conti Derbi Doppler IGM Jasil KRM Moose Racing MotoForce MotoForce Racing Piaggio Polisport Rieju Stage6 Standard Parts STR8 Top Performances Voca Racing Yamaha
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Doppler
Chain Guide Doppler Derbi / Aprilia / Gilera red
Article no.: CGN505686

Chain Guide Doppler Derbi / Aprilia / Gilera red

32,50 €
In stock
Doppler
Chain Guide Doppler blue Derbi / Aprilia / Gilera
Article no.: CGN505688

Chain Guide Doppler blue Derbi / Aprilia / Gilera

34,00 €
In stock
Doppler
Chain Master Link reinforced 420 Doppler gold
Article no.: CGN504541

Chain Master Link reinforced 420 Doppler gold

3,20 €
In stock
Top Performances
Gearwheel 2nd gear secondary shaft Top Performances T33 AM6 V1
Article no.: TAM00036

Gearwheel 2nd gear secondary shaft Top Performances T33 AM6 V1

22,50 €
In stock
Top Performances
Gearwheel 4th gear secondary shaft Top Performances T27 AM6 V1
Article no.: TAM00034

Gearwheel 4th gear secondary shaft Top Performances T27 AM6 V1

39,50 €
In stock
Top Performances
Primary Gear Shaft Top Performances Minarelli AM6 Z12 V2
Article no.: TAM00032

Primary Gear Shaft Top Performances Minarelli AM6 Z12 V2

63,00 €
In stock
Top Performances
Gearwheel 2nd gear secondary shaft T30 Euro 3 (D50B0)
Article no.: TAM00011

Gearwheel 2nd gear secondary shaft T30 Euro 3 (D50B0)

31,50 €
In stock
Top Performances
Gearwheel 1st gear secondary shaft Top Performances T36 AM6 V2
Article no.: TAM00010

Gearwheel 1st gear secondary shaft Top Performances T36 AM6 V2

31,50 €
In stock
Top Performances
Gearwheel 5th gear primary shaft Top Performances T24 AM6 V2
Article no.: TAM00008

Gearwheel 5th gear primary shaft Top Performances T24 AM6 V2

16,50 €
In stock
RRP
33,00 €
-50% Discount
Top Performances
Gearwheel 3rd-4th gear primary shaft Top Performances Minarelli T19-22 AM6 V2
Article no.: TAM00007

Gearwheel 3rd-4th gear primary shaft Top Performances Minarelli T19-22 AM6 V2

59,00 €
In stock
Top Performances
Gearwheel 2nd gear primary shaft Top Performances T16 AM6 V2
Article no.: TAM00006

Gearwheel 2nd gear primary shaft Top Performances T16 AM6 V2

23,00 €
In stock
Top Performances
Gearbox complete Top Performances Minarelli AM6
Article no.: T9935000

Gearbox complete Top Performances Minarelli AM6

562,00 €
In stock
Standard Parts
Shift Drum Generic / Minarelli AM6
Article no.: EKP-32173

Shift Drum Generic / Minarelli AM6

69,00 €
In stock
Jasil
Gearbox complete Top Racing Derbi Euro 3
Article no.: JA6250005
1

Gearbox complete Top Racing Derbi Euro 3

499,00 €
In stock
Jasil
Gearbox complete Top Racing AM6
Article no.: JA6250004

Gearbox complete Top Racing AM6

337,00 €
In stock
419,00 €
-20% Discount
Sale
Derbi
Primary Gears Derbi Euro 3 GPR
Article no.: OE-DE8470395

Primary Gears Derbi Euro 3 GPR

319,00 €
In stock
Standard Parts
Chain Roller Pit Bike / Dirt Bike (just roller)
Article no.: MB7568

Chain Roller Pit Bike / Dirt Bike (just roller)

7,00 €
In stock
Standard Parts
Rear Sprocket 51 teeth - 420 d. 100mm red Beta RR
Article no.: SP-37396/RE

Rear Sprocket 51 teeth - 420 d. 100mm red Beta RR

25,50 €
In stock
Standard Parts
Rear Sprocket 50 teeth - 420 d. 100mm red Beta RR
Article no.: SP-40580/RE

Rear Sprocket 50 teeth - 420 d. 100mm red Beta RR

22,50 €
In stock
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
Top Performances
Gearbox Top Performances 2nd series Minarelli AM6
Article no.: TAM00031

Gearbox Top Performances 2nd series Minarelli AM6

234,00 €
In stock
Standard Parts
Front Sprocket 428 Derbi / Gilera / Aprilia
Article no.: MF89.0001_PIGNON_DERBI_428

Front Sprocket 428 Derbi / Gilera / Aprilia

from 8,30 €
In stock
AFAM
Chain Master Link Afam 428 gold
Article no.: AFAM485376

Chain Master Link Afam 428 gold

2,20 €
In stock
AFAM
Chain Master Link Afam 420 gold
Article no.: AFAM483128

Chain Master Link Afam 420 gold

2,50 €
In stock
Standard Parts
Rear Sprocket steel 48 teeth - 420 CPI SX / SM
Article no.: MF89.00370

Rear Sprocket steel 48 teeth - 420 CPI SX / SM

16,00 €
In stock
AFAM
Rear Sprocket 53 teeth - 420 Afam Generic Trigger
Article no.: AFAM35103-53

Rear Sprocket 53 teeth - 420 Afam Generic Trigger

25,00 €
In stock
AFAM
Rear Sprocket 51 teeth - 420 Afam Generic Trigger
Article no.: AFAM35103-51

Rear Sprocket 51 teeth - 420 Afam Generic Trigger

25,50 €
In stock
Doppler
Chain Master Link Doppler 428
Article no.: CGN5045_CHAINLINK428COLOR
2

Chain Master Link Doppler 428

3,20 €
In stock
Doppler
Chain Master Link Doppler 420 yellow
Article no.: CGN504532

Chain Master Link Doppler 420 yellow

3,20 €
In stock
Doppler
Chain Master Link Doppler 420 red
Article no.: CGN504530

Chain Master Link Doppler 420 red

3,20 €
In stock
Doppler
Chain reinforced 138 links D.428 blue
Article no.: CGN503982

Chain reinforced 138 links D.428 blue

31,00 €
In stock
Doppler
Chain reinforced 138 links D.428 red
Article no.: CGN503981

Chain reinforced 138 links D.428 red

31,00 €
In stock
Doppler
Chain reinforced 138 links D.428 gold
Article no.: CGN503614

Chain reinforced 138 links D.428 gold

31,00 €
In stock
Standard Parts
Chain Guide Derbi / Aprilia / Gilera red
Article no.: MF89.00192
1

Chain Guide Derbi / Aprilia / Gilera red

24,00 €
In stock
Standard Parts
Chain Guide Derbi / Aprilia / Gilera blue
Article no.: MF89.00191

Chain Guide Derbi / Aprilia / Gilera blue

24,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC black Beta RR
Article no.: CGN500931

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC black Beta RR

54,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 428 Doppler aluminium CNC black Sherco Enduro 50
Article no.: CGN500923

Rear Sprocket 53 teeth - 428 Doppler aluminium CNC black Sherco Enduro 50

64,50 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC black Rieju MRT
Article no.: CGN500921

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC black Rieju MRT

54,50 €
In stock
Rieju
Swingarm Slider Rieju MRT / MRX
Article no.: OE-RIE3605001

Swingarm Slider Rieju MRT / MRX

19,00 €
In stock
Rieju
Swingarm Slider Rieju 50cc / 125cc
Article no.: OE-RIE7100302

Swingarm Slider Rieju 50cc / 125cc

11,00 €
In stock
Standard Parts
Screw M8x1.00 - 40mm Rieju
Article no.: MF96.90050

Screw M8x1.00 - 40mm Rieju

1,50 €
In stock
Derbi
Swingarm Slider aluminium Derbi Senda / Gilera SMT
Article no.: OE-DE00H01804331

Swingarm Slider aluminium Derbi Senda / Gilera SMT

14,50 €
In stock
Doppler
Chain Kit aluminium red 14x53 - 420 Doppler Derbi GPR / Aprilia RS4
Article no.: CGN492591

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

99,00 €
In stock
AFAM
Chain reinforced 134 links 428 gold
Article no.: AFAM485375

Chain reinforced 134 links 428 gold

28,50 €
In stock
AFAM
Chain reinforced Racing 134 links 420 gold
Article no.: AFAM485374

Chain reinforced Racing 134 links 420 gold

42,00 €
In stock
Doppler
Chain reinforced 134 links D.420 Doppler gold
Article no.: CGN501122

Chain reinforced 134 links D.420 Doppler gold

25,00 €
In stock
Doppler
Chain reinforced 134 links D.420 Doppler red
Article no.: CGN501114

Chain reinforced 134 links D.420 Doppler red

29,50 €
In stock
Doppler
Chain reinforced 134 links D.420 Doppler black
Article no.: CGN501113

Chain reinforced 134 links D.420 Doppler black

30,50 €
In stock
Doppler
Chain reinforced 134 links D.420 Doppler yellow
Article no.: CGN501116

Chain reinforced 134 links D.420 Doppler yellow

30,50 €
In stock
Doppler
Chain reinforced 134 links D.420 Doppler blue
Article no.: CGN501115

Chain reinforced 134 links D.420 Doppler blue

30,50 €
In stock
Doppler
Chain reinforced 134 links D.420 Doppler white
Article no.: CGN501118

Chain reinforced 134 links D.420 Doppler white

30,50 €
In stock
Doppler
Chain Tensioner Doppler Alu red Rieju MRT
Article no.: CGN500944

Chain Tensioner Doppler Alu red Rieju MRT

25,50 €
In stock
Doppler
Chain Tensioner Doppler Alu black Rieju MRT
Article no.: CGN500945

Chain Tensioner Doppler Alu black Rieju MRT

25,50 €
In stock
Top Performances
Washers and Circlips (kit) gearbox Minareli AM6
Article no.: MF60.18860

Washers and Circlips (kit) gearbox Minareli AM6

32,00 €
In stock
Standard Parts
Rear Sprocket steel 53 teeth - 420 CPI SX / SM
Article no.: MF89.00372

Rear Sprocket steel 53 teeth - 420 CPI SX / SM

23,00 €
In stock
AFAM
Chain Kit Afam 14x48 - 428 Rieju MRT / Yamaha DT
Article no.: AFAM22

Chain Kit Afam 14x48 - 428 Rieju MRT / Yamaha DT

57,00 €
In stock
AFAM
Chain Kit Afam 13x48 Derbi Fenix
Article no.: AFAM70

Chain Kit Afam 13x48 Derbi Fenix

55,50 €
In stock
RRP
111,00 €
-50% Discount
Standard Parts
Chain Kit 13x53 - 420 Derbi DRD Pro / Racing
Article no.: MF89.00222

Chain Kit 13x53 - 420 Derbi DRD Pro / Racing

39,00 €
In stock
Standard Parts
Chain Kit 11x53 - 420 D.108mm 6 holes Derbi GPR / Senda X-Treme
Article no.: MF89.00211

Chain Kit 11x53 - 420 D.108mm 6 holes Derbi GPR / Senda X-Treme

40,00 €
In stock
Standard Parts
Rear Sprocket reinforced 53 teeth - 420 Derbi Aprilia SX 50
Article no.: MF89.00444

Rear Sprocket reinforced 53 teeth - 420 Derbi Aprilia SX 50

40,50 €
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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