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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 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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AFAM
Rear Sprocket steel 60 teeth - 420 Afam Rieju MRT
Article no.: AFAM47103-60

Rear Sprocket steel 60 teeth - 420 Afam Rieju MRT

25,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 59 teeth - 428 AFAM Yamaha XVS 125 / XVS 250
Article no.: AFAM12221-59

Rear Sprocket steel 59 teeth - 428 AFAM Yamaha XVS 125 / XVS 250

32,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 59 teeth - 428 AFAM Husqvarna SMS / TE 125
Article no.: AFAM14205-59

Rear Sprocket steel 59 teeth - 428 AFAM Husqvarna SMS / TE 125

32,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 58 teeth - 428 Afam Rieju MRT
Article no.: AFAM47200-58

Rear Sprocket steel 58 teeth - 428 Afam Rieju MRT

32,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 57 teeth - 428 AFAM Yamaha DT 125R / TDR / WR 125R / WR 125X
Article no.: AFAM12207-57

Rear Sprocket steel 57 teeth - 428 AFAM Yamaha DT 125R / TDR / WR 125R / WR 125X

25,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 54 teeth - 428 AFAM Yamaha TT-R 125 / TT-R 125 LW
Article no.: AFAM12222-54

Rear Sprocket steel 54 teeth - 428 AFAM Yamaha TT-R 125 / TT-R 125 LW

29,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 54 teeth - 428 AFAM Husqvarna SMS / TE 125
Article no.: AFAM14205-54

Rear Sprocket steel 54 teeth - 428 AFAM Husqvarna SMS / TE 125

29,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 52 teeth - 428 AFAM Hyosung GT 125
Article no.: AFAM65200-52

Rear Sprocket steel 52 teeth - 428 AFAM Hyosung GT 125

25,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 52 teeth - 420 AFAM Yamaha DT av.92 / FS1 / Chappy
Article no.: AFAM12100-52

Rear Sprocket steel 52 teeth - 420 AFAM Yamaha DT av.92 / FS1 / Chappy

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 50 teeth - 428 AFAM Yamaha TW 125 / XT 125 / 350 / TY 125
Article no.: AFAM12208-50

Rear Sprocket steel 50 teeth - 428 AFAM Yamaha TW 125 / XT 125 / 350 / TY 125

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 50 teeth - 420 AFAM Beta RR (02 - 05) / Caballero
Article no.: AFAM92115-50

Rear Sprocket steel 50 teeth - 420 AFAM Beta RR (02 - 05) / Caballero

23,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 49 teeth - 428 AFAM Yamaha TT-R 125
Article no.: AFAM12222-49

Rear Sprocket steel 49 teeth - 428 AFAM Yamaha TT-R 125

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 48 teeth - 428 AFAM Hyosung Cruise 125 / GV / RT / XRX / Kawasaki / Suzuki
Article no.: AFAM14201-48

Rear Sprocket steel 48 teeth - 428 AFAM Hyosung Cruise 125 / GV / RT / XRX / Kawasaki / Suzuki

22,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 48 teeth - 420 AFAM Derbi Fenix
Article no.: AFAM47101-48

Rear Sprocket steel 48 teeth - 420 AFAM Derbi Fenix

66,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 47 teeth - 520 AFAM Yamaha TT / XT / XV / YFM / MuZ 660
Article no.: AFAM12505-47

Rear Sprocket steel 47 teeth - 520 AFAM Yamaha TT / XT / XV / YFM / MuZ 660

33,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 47 teeth - 428 AFAM Hyosung Cruise / GV / RT / XRX / Kawasaki / Suzuki
Article no.: AFAM14201-47

Rear Sprocket steel 47 teeth - 428 AFAM Hyosung Cruise / GV / RT / XRX / Kawasaki / Suzuki

22,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 46 teeth - 520 AFAM Hyosung GV 250
Article no.: AFAM65300-46

Rear Sprocket steel 46 teeth - 520 AFAM Hyosung GV 250

31,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 45 teeth - 520 AFAM Aprilia ETX / MX / RX / SX 125
Article no.: AFAM35204-45

Rear Sprocket steel 45 teeth - 520 AFAM Aprilia ETX / MX / RX / SX 125

30,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 45 teeth - 428 AFAM SYM XS 125 K / Yamaha RD / YBR 125
Article no.: AFAM12200-45

Rear Sprocket steel 45 teeth - 428 AFAM SYM XS 125 K / Yamaha RD / YBR 125

16,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 45 teeth - 415 AFAM Aprilia Pegaso / RX3
Article no.: AFAM35101-45

Rear Sprocket steel 45 teeth - 415 AFAM Aprilia Pegaso / RX3

23,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 44 teeth - 525 AFAM Hyosung GT 650
Article no.: AFAM65500-44

Rear Sprocket steel 44 teeth - 525 AFAM Hyosung GT 650

31,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 44 teeth - 420 AFAM Rieju RS1
Article no.: AFAM80101-44

Rear Sprocket steel 44 teeth - 420 AFAM Rieju RS1

20,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 43 teeth - 520 AFAM Honda NC700 / NC750 / CTX 700 / CBR 500 / CB 500
Article no.: AFAM10627-43

Rear Sprocket steel 43 teeth - 520 AFAM Honda NC700 / NC750 / CTX 700 / CBR 500 / CB 500

29,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 43 teeth - 428 AFAM SYM XS 125 K / Yamaha RD / YBR 125
Article no.: AFAM12200-43

Rear Sprocket steel 43 teeth - 428 AFAM SYM XS 125 K / Yamaha RD / YBR 125

16,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 43 teeth - 415 AFAM Aprilia RS50 before 1998
Article no.: AFAM35100-43

Rear Sprocket steel 43 teeth - 415 AFAM Aprilia RS50 before 1998

40,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 42 teeth - 520 AFAM KTM Duke 200
Article no.: AFAM10221-42

Rear Sprocket steel 42 teeth - 520 AFAM KTM Duke 200

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 42 teeth - 520 AFAM Cagiva Mito / Raptor 125
Article no.: AFAM44203-42

Rear Sprocket steel 42 teeth - 520 AFAM Cagiva Mito / Raptor 125

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 41 teeth - 520 AFAM Husaberg / Husqvarna / KTM
Article no.: AFAM71304-41

Rear Sprocket steel 41 teeth - 520 AFAM Husaberg / Husqvarna / KTM

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 41 teeth - 428 AFAM Kymco Pulsar
Article no.: AFAM10201-41

Rear Sprocket steel 41 teeth - 428 AFAM Kymco Pulsar

19,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 40 teeth - 520 AFAM Husaberg / Husqvarna / KTM
Article no.: AFAM71304-40

Rear Sprocket steel 40 teeth - 520 AFAM Husaberg / Husqvarna / KTM

23,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 40 teeth - 520 AFAM Cagiva Mito / Raptor 125
Article no.: AFAM44203-40

Rear Sprocket steel 40 teeth - 520 AFAM Cagiva Mito / Raptor 125

23,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 39 teeth - 520 AFAM Honda TRX 250 R / X / 300 EX / 400 EX / X / 450R
Article no.: AFAM10318-39

Rear Sprocket steel 39 teeth - 520 AFAM Honda TRX 250 R / X / 300 EX / 400 EX / X / 450R

23,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 39 teeth - 520 AFAM Honda NC700 / NC750 / CTX 700 / CBR 500 / CB 500
Article no.: AFAM10627-39

Rear Sprocket steel 39 teeth - 520 AFAM Honda NC700 / NC750 / CTX 700 / CBR 500 / CB 500

24,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 39 teeth - 520 AFAM Cagiva Mito / Raptor 125
Article no.: AFAM44203-39

Rear Sprocket steel 39 teeth - 520 AFAM Cagiva Mito / Raptor 125

23,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 38 teeth - 520 AFAM Honda TRX 250 R / X / 300 EX / 400 EX / X / 450R
Article no.: AFAM10318-38

Rear Sprocket steel 38 teeth - 520 AFAM Honda TRX 250 R / X / 300 EX / 400 EX / X / 450R

21,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 38 teeth - 520 AFAM Aprilia AF1 125 Europa / Sport
Article no.: AFAM35200-38

Rear Sprocket steel 38 teeth - 520 AFAM Aprilia AF1 125 Europa / Sport

35,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 36 teeth - 428 AFAM Kymco Pulsar
Article no.: AFAM10201-36

Rear Sprocket steel 36 teeth - 428 AFAM Kymco Pulsar

16,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 34 teeth - 520 AFAM SYM Trackrunner
Article no.: AFAM92218-34

Rear Sprocket steel 34 teeth - 520 AFAM SYM Trackrunner

20,50 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 34 teeth - 420 AFAM Honda MSX
Article no.: AFAM10117-34

Rear Sprocket steel 34 teeth - 420 AFAM Honda MSX

15,00 €
Ready for dispatch shortly
AFAM
Rear Sprocket steel 28 teeth - 428 AFAM Kymco Maxxer
Article no.: AFAM74101-28

Rear Sprocket steel 28 teeth - 428 AFAM Kymco Maxxer

15,50 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring reinforced gold 428 XMR-G 130 links
Article no.: AFAM428XMR-G-130

Chain AFAM XS-Ring reinforced gold 428 XMR-G 130 links

66,00 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring reinforced gold 428 XMR-G 124 links
Article no.: AFAM428XMR-G-124

Chain AFAM XS-Ring reinforced gold 428 XMR-G 124 links

63,00 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring reinforced black 525 XMR3 108 links
Article no.: AFAM525XMR3-108

Chain AFAM XS-Ring reinforced black 525 XMR3 108 links

80,50 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring reinforced black 520 XMR3 96 links
Article no.: AFAM520XMR3-96L

Chain AFAM XS-Ring reinforced black 520 XMR3 96 links

66,00 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring reinforced black 520 XMR3 94 links
Article no.: AFAM520XMR3-94L

Chain AFAM XS-Ring reinforced black 520 XMR3 94 links

66,00 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring reinforced black 520 XMR3 116 links
Article no.: AFAM520XMR3-116L

Chain AFAM XS-Ring reinforced black 520 XMR3 116 links

80,50 €
Ready for dispatch shortly
AFAM
Chain AFAM XS-Ring hyper reinforced gold 525 XHR3 112 links
Article no.: AFAM525XHR3-112

Chain AFAM XS-Ring hyper reinforced gold 525 XHR3 112 links

138,00 €
Ready for dispatch shortly
Moose Racing
Moose Racing RXP Pro-MX 520 Chain
Article no.: MRM57400_MASTER

Moose Racing RXP Pro-MX 520 Chain

from 74,00 €
Ready for dispatch shortly
77,00 €
-4% Discount
Piaggio
Countershaft Piaggio 4-stroke 4V
Article no.: OE-PIA8416865

Countershaft Piaggio 4-stroke 4V

352,00 €
Ready for dispatch shortly
Piaggio
Countershaft Piaggio Typhoon Euro4
Article no.: OE-PIA833784

Countershaft Piaggio Typhoon Euro4

280,00 €
Ready for dispatch shortly
Piaggio
Input Shaft clutch Piaggio TPH Euro4
Article no.: OE-PIA8282335

Input Shaft clutch Piaggio TPH Euro4

132,00 €
Ready for dispatch shortly
Piaggio
Countershaft Piaggio TPH `10 - `17
Article no.: OE-PIA8278045

Countershaft Piaggio TPH `10 - `17

175,00 €
Ready for dispatch shortly
Piaggio
Wheel Axle 48 teeth Piaggio (C11, C25, Zip2 SP)
Article no.: OE-PIA8258095

Wheel Axle 48 teeth Piaggio (C11, C25, Zip2 SP)

282,00 €
Ready for dispatch shortly
Piaggio
Countershaft 13/46 Piaggio Typhoon C06,C16,C34,C381 `04-`11
Article no.: OE-PIA4784925

Countershaft 13/46 Piaggio Typhoon C06,C16,C34,C381 `04-`11

200,00 €
Ready for dispatch shortly
Piaggio
Countershaft 13/39 Piaggio Typhoon before `00
Article no.: OE-PIA4300095

Countershaft 13/39 Piaggio Typhoon before `00

217,00 €
Ready for dispatch shortly
Peugeot
Input Shaft clutch Peugeot 4-stroke Django / Kisbee after `18
Article no.: OE-PEU788049

Input Shaft clutch Peugeot 4-stroke Django / Kisbee after `18

118,00 €
Ready for dispatch shortly
Derbi
Front Sprocket 11 teeth Derbi Euro2 / Euro3 / Euro4
Article no.: OE-DE00H02808371

Front Sprocket 11 teeth Derbi Euro2 / Euro3 / Euro4

18,50 €
Ready for dispatch shortly
Standard Parts
Countershaft China 2-stroke / CPI / Keeway / Generic
Article no.: OE-CPI17800B09F000

Countershaft China 2-stroke / CPI / Keeway / Generic

48,50 €
Ready for dispatch shortly
Yamaha
Gear 2nd Minarelli AM6
Article no.: OE-AM4YVE72210000

Gear 2nd Minarelli AM6

97,00 €
Ready for dispatch shortly
Buzzetti
Chain Tensioner Buzzetti Puch / Herkules / Kreidler / Zündapp
Article no.: BZA35228

Chain Tensioner Buzzetti Puch / Herkules / Kreidler / Zündapp

3,00 €
Ready for dispatch shortly
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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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