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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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Malossi
Secondary Gears Malossi 14/43 Gilera Runner 180cc
Article no.: M679925

Secondary Gears Malossi 14/43 Gilera Runner 180cc

88,00 €
In stock soon
RRP
90,00 €
-2% Discount
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

105,00 €
In stock soon
RRP
115,00 €
-9% Discount
Malossi
Secondary Gears Malossi 15/41 Piaggio Hexagon 125-150cc / Typhoon 125cc before 1998
Article no.: M678657

Secondary Gears Malossi 15/41 Piaggio Hexagon 125-150cc / Typhoon 125cc before 1998

103,00 €
In stock soon
Malossi
Primary Gears Malossi 16/40 Yamaha Aerox / BW's
Article no.: M673677
7

Primary Gears Malossi 16/40 Yamaha Aerox / BW's

88,00 €
In stock soon
Malossi
Primary Gears Malossi 15/42 Yamaha Aerox / BW's 100cc
Article no.: M6711486
1

Primary Gears Malossi 15/42 Yamaha Aerox / BW's 100cc

108,00 €
In stock soon
RRP
129,00 €
-16% Discount
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 €
In stock soon
KMC
Chain reinforced KMC 120 links / 415 blue
Article no.: CGN505608

Chain reinforced KMC 120 links / 415 blue

15,50 €
In stock soon
KMC
Chain reinforced KMC 120 links / 415 red
Article no.: CGN505607

Chain reinforced KMC 120 links / 415 red

19,00 €
In stock soon
KMC
Chain reinforced KMC 103 links / 415 red
Article no.: CGN505604

Chain reinforced KMC 103 links / 415 red

13,00 €
In stock soon
14,00 €
-7% Discount
Doppler
Chain Guide Doppler Derbi / Aprilia / Gilera red
Article no.: CGN505686

Chain Guide Doppler Derbi / Aprilia / Gilera red

34,00 €
In stock soon
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

20,00 €
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
Top Performances
Gearbox Top Performances 2nd series Minarelli AM6
Article no.: TAM00031

Gearbox Top Performances 2nd series Minarelli AM6

243,00 €
In stock soon
RRP
319,00 €
-24% Discount
Standard Parts
Pedal Drive Shaft Piaggio Ciao
Article no.: R121530300

Pedal Drive Shaft Piaggio Ciao

23,00 €
In stock soon
Standard Parts
Chain reinforced 120 links D.415 Doppler gold
Article no.: CGN504287

Chain reinforced 120 links D.415 Doppler gold

13,00 €
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 blue
Article no.: CGN504531

Chain Master Link Doppler 420 blue

3,60 €
In stock soon
Doppler
Chain Master Link Doppler 420 red
Article no.: CGN504530

Chain Master Link Doppler 420 red

3,20 €
In stock soon
Doppler
Chain Master Link Doppler 420 black
Article no.: CGN504529

Chain Master Link Doppler 420 black

3,20 €
In stock soon
Doppler
Chain reinforced 138 links D.428 red
Article no.: CGN503981

Chain reinforced 138 links D.428 red

26,50 €
In stock soon
31,00 €
-15% Discount
Standard Parts
Rear Sprocket 48 teeth - 420 Rieju MRT
Article no.: EKP-149076

Rear Sprocket 48 teeth - 420 Rieju MRT

27,50 €
In stock soon
Str8
Front Sprocket 420 red Derbi
Article no.: STR-71REDDERBI

Front Sprocket 420 red Derbi

10,50 €
In stock soon
Standard Parts
Front Sprocket 420 red Minarelli AM6
Article no.: STR-71REDAM6

Front Sprocket 420 red Minarelli AM6

from 9,80 €
In stock soon
Standard Parts
Rear Sprocket steel 52 teeth - 420 Sherco Enduro 50
Article no.: MF89.00365

Rear Sprocket steel 52 teeth - 420 Sherco Enduro 50

25,50 €
In stock soon
Standard Parts
Rear Sprocket steel 53 teeth - 420 Rieju MRT
Article no.: MF89.00324

Rear Sprocket steel 53 teeth - 420 Rieju MRT

22,50 €
In stock soon
Standard Parts
Rear Sprocket steel 48 teeth - 420 Rieju MRT
Article no.: MF89.00321

Rear Sprocket steel 48 teeth - 420 Rieju MRT

25,50 €
In stock soon
Standard Parts
Reinforced Chain 134 links size=420
Article no.: CGN475169

Reinforced Chain 134 links size=420

20,00 €
In stock soon
21,00 €
-5% Discount
Derbi
Lever for gear selector shaft Derbi Euro 3 (D50B0)
Article no.: OE-DE847068
1

Lever for gear selector shaft Derbi Euro 3 (D50B0)

15,50 €
In stock soon
Standard Parts
Rear Sprocket 54 teeth MBK 51S (Grimeca rims d.98mm)
Article no.: CGN2972
2

Rear Sprocket 54 teeth MBK 51S (Grimeca rims d.98mm)

16,50 €
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
Chain Tensioner Piaggio Ciao PX / Bravo
Article no.: CGN3223

Chain Tensioner Piaggio Ciao PX / Bravo

9,80 €
In stock soon
Standard Parts
Rear Sprocket 45 teeth Peugeot 103 SP / MV (d.94mm)
Article no.: CGN2933

Rear Sprocket 45 teeth Peugeot 103 SP / MV (d.94mm)

13,50 €
In stock soon
Standard Parts
Rear Sprocket 45 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)
Article no.: CGN2949

Rear Sprocket 45 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)

13,50 €
In stock soon
Standard Parts
Rear Sprocket BTS 56 teeth Peugeot 103 SP / MVL (94mm steel rims)
Article no.: CGN2945
1

Rear Sprocket BTS 56 teeth Peugeot 103 SP / MVL (94mm steel rims)

18,00 €
In stock soon
Standard Parts
Rear Sprocket 42 teeth Peugeot 103 SP / MV (RYS rims d.94mm)
Article no.: CGN244069

Rear Sprocket 42 teeth Peugeot 103 SP / MV (RYS rims d.94mm)

12,00 €
In stock soon
Standard Parts
Rear Sprocket 60 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)
Article no.: CGN175202
1

Rear Sprocket 60 teeth Peugeot 103 SPX / RCX (Grimeca 98mm)

25,00 €
In stock soon
Standard Parts
Chain Master Link Iris Racing super reinforced d=415
Article no.: CGN8872
1

Chain Master Link Iris Racing super reinforced d=415

4,80 €
In stock soon
Standard Parts
Gear 12 teeth Peugeot 103 SPX / RCX
Article no.: CGN862

Gear 12 teeth Peugeot 103 SPX / RCX

5,50 €
In stock soon
Standard Parts
Gear 10 teeth Peugeot 103 SPX / RCX
Article no.: CGN860

Gear 10 teeth Peugeot 103 SPX / RCX

8,00 €
In stock soon
8,30 €
-4% Discount
Standard Parts
Pedal Spacer Ring MBK 51
Article no.: CGN4277

Pedal Spacer Ring MBK 51

2,70 €
In stock soon
Standard Parts
Rear Sprocket 56 teeth MBK 51 (Grimeca rim)
Article no.: CGN2973

Rear Sprocket 56 teeth MBK 51 (Grimeca rim)

19,50 €
In stock soon
Standard Parts
Rear Sprocket 52 teeth Peugeot 103 SP / SPX (Grimeca rim)
Article no.: CGN2952

Rear Sprocket 52 teeth Peugeot 103 SP / SPX (Grimeca rim)

14,50 €
In stock soon
Doppler
Chain Kit 13x53 aluminum - 420 Doppler Fantic XM/XE red
Article no.: CGN538770

Chain Kit 13x53 aluminum - 420 Doppler Fantic XM/XE red

94,00 €
In stock soon
Doppler
Chain Kit 13x53 steel - 428 Doppler Origin Sherco 50cc
Article no.: CGN538766

Chain Kit 13x53 steel - 428 Doppler Origin Sherco 50cc

65,00 €
In stock soon
Doppler
Rear Sprocket aluminium Fantic XM / XE Doppler 53 teeth - 420 red
Article no.: CGN534141

Rear Sprocket aluminium Fantic XM / XE Doppler 53 teeth - 420 red

49,50 €
In stock soon
50,50 €
-2% Discount
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

31,00 €
In stock soon
Standard Parts
Shift Drum Lock Lever Kit Generic / CPI / KSR
Article no.: MF60.19508

Shift Drum Lock Lever Kit Generic / CPI / KSR

15,00 €
In stock soon
AFAM
Chain Kit Alu Sherco SM-R Afam 13x56 - 428 (original ratio)
Article no.: AFAM205407

Chain Kit Alu Sherco SM-R Afam 13x56 - 428 (original ratio)

94,50 €
In stock soon
Standard Parts
Chain Guide Derbi Senda red
Article no.: MF89.00193/RE

Chain Guide Derbi Senda red

21,50 €
In stock soon
IGM
Rear Sprocket steel Derbi DRD Pro 50 teeth - 420
Article no.: MF89.00334

Rear Sprocket steel Derbi DRD Pro 50 teeth - 420

20,00 €
In stock soon
Standard Parts
Shift Drum with forks and bolts Generic / CPI / KSR
Article no.: MF60.19504

Shift Drum with forks and bolts Generic / CPI / KSR

69,50 €
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
Beta
Chain Tensioner Beta RR 50 (x1)
Article no.: OE-BET29.06201.057

Chain Tensioner Beta RR 50 (x1)

11,00 €
In stock soon
MotoForce Racing
Front Sprocket 15 teeth 420 MotoForce Racing AM6 Neochrome
Article no.: MF89.00026

Front Sprocket 15 teeth 420 MotoForce Racing AM6 Neochrome

10,00 €
In stock soon
RRP
10,50 €
-5% Discount
MotoForce Racing
Front Sprocket 13 teeth 420 MotoForce Racing AM6 Neochrome
Article no.: MF89.00024

Front Sprocket 13 teeth 420 MotoForce Racing AM6 Neochrome

9,60 €
In stock soon
RRP
10,50 €
-9% Discount
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
Doppler
Rear Sprocket Doppler 53 teeth - 428 aluminum neochrome Sherco 50
Article no.: CGN517732

Rear Sprocket Doppler 53 teeth - 428 aluminum neochrome Sherco 50

64,50 €
In stock soon
Standard Parts
Rear Sprocket 53 teeth - 420 Doppler Masai Rider 50
Article no.: CGN517184

Rear Sprocket 53 teeth - 420 Doppler Masai Rider 50

57,00 €
In stock soon
Standard Parts
Chain reinforced 134 links D.420 Doppler purple
Article no.: CGN517760

Chain reinforced 134 links D.420 Doppler purple

31,00 €
In stock soon
Standard Parts
Pulley aluminium 11 teeth black moped
Article no.: CGN517366

Pulley aluminium 11 teeth black moped

39,50 €
In stock soon
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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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