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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 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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RFX
Chain Tensioners / Axle Blocks RFX Pro orange KTM SX65
Article no.: R-FXAB5040099OR

Chain Tensioners / Axle Blocks RFX Pro orange KTM SX65

32,00 €
In stock
RFX
Chain Tensioners / Axle Blocks RFX Pro orange KTM
Article no.: R-FXAB5030099OR

Chain Tensioners / Axle Blocks RFX Pro orange KTM

33,00 €
In stock
Standard Parts
Pulley aluminium 11 teeth black moped
Article no.: CGN517366

Pulley aluminium 11 teeth black moped

36,00 €
In stock
Standard Parts
Spacer idle gear 24x35x1,0mm gearbox Simson
Article no.: MOF-41496

Spacer idle gear 24x35x1,0mm gearbox Simson

1,20 €
In stock
RMS
Freewheel Sprocket 18 teeth Piaggio Ciao
Article no.: R525260140

Freewheel Sprocket 18 teeth Piaggio Ciao

4,50 €
In stock
RMS
Freewheel Sprocket 16 teeth Piaggio Ciao
Article no.: R525260120

Freewheel Sprocket 16 teeth Piaggio Ciao

4,80 €
In stock
Standard Parts
Steering Lock with 2 keys Puch
Article no.: IP44179

Steering Lock with 2 keys Puch

9,50 €
In stock
Standard Parts
Chain Guide / Frame Guard Puch Maxi N
Article no.: IP44214

Chain Guide / Frame Guard Puch Maxi N

11,00 €
In stock
Standard Parts
Chain Guide / Frame Guard Puch Maxi S
Article no.: IP44151

Chain Guide / Frame Guard Puch Maxi S

7,70 €
In stock
Standard Parts
Rear Sprocket Premium 45 teeth Puch Maxi (cast wheel)
Article no.: IP43680

Rear Sprocket Premium 45 teeth Puch Maxi (cast wheel)

35,50 €
In stock
Standard Parts
Pedal Chain 112 links 1/2 "x1/8" Type 410 moped
Article no.: IP44150

Pedal Chain 112 links 1/2 "x1/8" Type 410 moped

7,30 €
In stock
Voca Racing
Gearbox Voca Racing Derbi
Article no.: VCR-RD77193.CC

Gearbox Voca Racing Derbi

517,00 €
In stock
RRP
570,00 €
-9% Discount
Voca Racing
Gearbox Voca Racing Minarelli AM6
Article no.: VCR-RD77188.CC

Gearbox Voca Racing Minarelli AM6

475,00 €
In stock
RRP
534,00 €
-11% Discount
Avoc
Chain Tensioners (x2) Avoc Orange KTM Duke 125
Article no.: AVOC-181854

Chain Tensioners (x2) Avoc Orange KTM Duke 125

19,00 €
In stock
Doppler
Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Fantic Caballero before 2015
Article no.: CGN515220

Rear Sprocket 53 teeth - 420 Doppler aluminium CNC red Fantic Caballero before 2015

50,00 €
In stock
52,50 €
-5% Discount
Sale
Standard Parts
Chain Tensioner M7x1.00 - L.35mm MBK 51 (x1)
Article no.: CGN517091

Chain Tensioner M7x1.00 - L.35mm MBK 51 (x1)

3,80 €
In stock
KRM
Ceramic Ball for clutch rod KRM Minarelli AM6
Article no.: KR540F

Ceramic Ball for clutch rod KRM Minarelli AM6

6,40 €
In stock
Polini
Secondary Transmission Polini 14/48 17,7mm Piaggio
Article no.: P202.1373

Secondary Transmission Polini 14/48 17,7mm Piaggio

191,00 €
In stock
Pro Circuit
Chain Tensioners / Axle Blocks Pro Circuit red CR / CRF 2000-2008
Article no.: PC-HAB00

Chain Tensioners / Axle Blocks Pro Circuit red CR / CRF 2000-2008

77,00 €
In stock
Derbi
Chain Tensioner Plate (x1) Derbi DRD Racing
Article no.: OE-DE00H01301471

Chain Tensioner Plate (x1) Derbi DRD Racing

23,00 €
In stock
Algi
Rear Sprocket Screw M6x1.00 - L.20mm Peugeot 103 (alloy wheels)
Article no.: EKP-17129

Rear Sprocket Screw M6x1.00 - L.20mm Peugeot 103 (alloy wheels)

1,10 €
In stock
Doppler
Rear Sprocket 60 teeth Doppler aluminium CNC black MBK 51 / Peugeot 103
Article no.: CGN512881

Rear Sprocket 60 teeth Doppler aluminium CNC black MBK 51 / Peugeot 103

49,50 €
In stock
Doppler
Carrier Plate f. rear sprocket Doppler Alu aluminium black Peugeot 103
Article no.: CGN512883

Carrier Plate f. rear sprocket Doppler Alu aluminium black Peugeot 103

58,50 €
In stock
Conti
Rear Sprocket bi-metal red 53 teeth - 420 Conti CHR Aprilia SX 50
Article no.: CGN513622

Rear Sprocket bi-metal red 53 teeth - 420 Conti CHR Aprilia SX 50

71,00 €
In stock
Conti
Rear Sprocket bimetal red 53 teeth - 428 Conti CHR Beta RR
Article no.: CGN513620

Rear Sprocket bimetal red 53 teeth - 428 Conti CHR Beta RR

71,00 €
In stock
Standard Parts
Rear Sprocket steel 52 teeth - 420 CPI SX / SM
Article no.: MF89.00371

Rear Sprocket steel 52 teeth - 420 CPI SX / SM

25,00 €
In stock
Doppler
Rear Sprocket steel 53 teeth - 420 Doppler Derbi DRD Pro
Article no.: CGN509884

Rear Sprocket steel 53 teeth - 420 Doppler Derbi DRD Pro

34,50 €
In stock
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
Moto Master
Bolts f. rear sprocket Moto Master M8x26 (x6)
Article no.: MMAST-24011074

Bolts f. rear sprocket Moto Master M8x26 (x6)

11,00 €
In stock
Moto Master
Bolts f. rear sprocket Moto Master M8x30 (x6)
Article no.: MMAST-24011073

Bolts f. rear sprocket Moto Master M8x30 (x6)

11,00 €
In stock
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
Moto Master
Chain Moto Master X-Ring V6-520G 120 links (press links)
Article no.: MMAST-12231558

Chain Moto Master X-Ring V6-520G 120 links (press links)

86,00 €
In stock
Moto Master
Chain Moto Master GP-520 GOLD 120 links (clip links)
Article no.: MMAST-12200451

Chain Moto Master GP-520 GOLD 120 links (clip links)

77,00 €
In stock
Moto Master
Chain Moto Master MX V2-520G 120 links (clip links)
Article no.: MMAST-12200449

Chain Moto Master MX V2-520G 120 links (clip links)

67,50 €
In stock
Moto Master
Front Sprocket Moto Master 428 14 teeth TC / SX 85 after 2018
Article no.: MMAST-12121570

Front Sprocket Moto Master 428 14 teeth TC / SX 85 after 2018

15,00 €
In stock
Moto Master
Front Sprocket Moto Master 520 13 teeth Sherco SE-F 250 / 300
Article no.: MMAST-12121543

Front Sprocket Moto Master 520 13 teeth Sherco SE-F 250 / 300

16,00 €
In stock
Moto Master
Front Sprocket Moto Master 520 13 teeth GasGas / Rieju
Article no.: MMAST-12121538

Front Sprocket Moto Master 520 13 teeth GasGas / Rieju

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 520 13 teeth RM-Z 250 after 2013
Article no.: MMAST-12121527

Front Sprocket Moto Master 520 13 teeth RM-Z 250 after 2013

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 520 13 teeth RM 125 1981 - 2008
Article no.: MMAST-12121506

Front Sprocket Moto Master 520 13 teeth RM 125 1981 - 2008

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 428 14 teeth YZ 85
Article no.: MMAST-12121499

Front Sprocket Moto Master 428 14 teeth YZ 85

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 428 13 teeth TC / SX 85 2004-2017
Article no.: MMAST-12121490

Front Sprocket Moto Master 428 13 teeth TC / SX 85 2004-2017

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 428 12 teeth TC / SX 85
Article no.: MMAST-12121489

Front Sprocket Moto Master 428 12 teeth TC / SX 85

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 520 15 teeth KTM / Husqvarna / Beta / GasGas
Article no.: MMAST-12121485

Front Sprocket Moto Master 520 15 teeth KTM / Husqvarna / Beta / GasGas

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 520 15 teeth YZ 125 / 250
Article no.: MMAST-12121481

Front Sprocket Moto Master 520 15 teeth YZ 125 / 250

16,00 €
In stock
Moto Master
Front Sprocket Moto Master 520 14 teeth YZ 125 / 250
Article no.: MMAST-12121480

Front Sprocket Moto Master 520 14 teeth YZ 125 / 250

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 520 12 teeth YZ 125 / 250
Article no.: MMAST-12121478

Front Sprocket Moto Master 520 12 teeth YZ 125 / 250

15,50 €
In stock
Moto Master
Front Sprocket Moto Master 520 13 teeth YZF 250 / 450
Article no.: MMAST-12121476

Front Sprocket Moto Master 520 13 teeth YZF 250 / 450

16,00 €
In stock
Moto Master
Rear Sprocket Moto Master 420 aluminium 47 teeth black YZ 65
Article no.: MMAST-12112498

Rear Sprocket Moto Master 420 aluminium 47 teeth black YZ 65

48,50 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 49 teeth orange KTM Freeride
Article no.: MMAST-12112436

Rear Sprocket Moto Master 520 aluminium 49 teeth orange KTM Freeride

52,50 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 50 teeth black KTM Freeride
Article no.: MMAST-12112431

Rear Sprocket Moto Master 520 aluminium 50 teeth black KTM Freeride

25,00 €
In stock
RRP
50,00 €
-50% Discount
Moto Master
Rear Sprocket Moto Master 520 Fusion 48 teeth Beta RR 350 black
Article no.: MMAST-12112349

Rear Sprocket Moto Master 520 Fusion 48 teeth Beta RR 350 black

73,50 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 48 teeth blue Sherco / Beta
Article no.: MMAST-12112344

Rear Sprocket Moto Master 520 aluminium 48 teeth blue Sherco / Beta

54,00 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 52 teeth black Sherco / Beta
Article no.: MMAST-12112332

Rear Sprocket Moto Master 520 aluminium 52 teeth black Sherco / Beta

54,00 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 45 teeth black Sherco / Beta
Article no.: MMAST-12112325

Rear Sprocket Moto Master 520 aluminium 45 teeth black Sherco / Beta

54,00 €
In stock
Moto Master
Rear Sprocket Moto Master 520 Fusion 49 teeth blue YZ / YZF
Article no.: MMAST-12112321

Rear Sprocket Moto Master 520 Fusion 49 teeth blue YZ / YZF

73,50 €
In stock
Moto Master
Rear Sprocket Moto Master 520 Fusion 48 teeth black YZ / YZF
Article no.: MMAST-12112315

Rear Sprocket Moto Master 520 Fusion 48 teeth black YZ / YZF

73,50 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 51 teeth blue YZ / YZF
Article no.: MMAST-12112312

Rear Sprocket Moto Master 520 aluminium 51 teeth blue YZ / YZF

54,00 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 45 teeth blue YZ / YZF
Article no.: MMAST-12112306

Rear Sprocket Moto Master 520 aluminium 45 teeth blue YZ / YZF

54,00 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 44 teeth blue YZ / YZF
Article no.: MMAST-12112305

Rear Sprocket Moto Master 520 aluminium 44 teeth blue YZ / YZF

54,00 €
In stock
Moto Master
Rear Sprocket Moto Master 520 aluminium 41 teeth blue YZ / YZF
Article no.: MMAST-12112302

Rear Sprocket Moto Master 520 aluminium 41 teeth blue YZ / YZF

54,00 €
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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