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Transmission

(201 products)
Moped Gearboxes Chains and Sprockets Gear Drives Transmission Accessories
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Bracket Bushings & Spacers Chain Chain accessories Chain guard Chain kit Chain master link Chain tensioner Clutch springs Front sprocket Gear lever Gearbox Gearbox accessories Ignition lock Pulley gear Chain rear sprocket Spring Transmission Transmission accessories Transmission gear Washer Woodruff key Bearing ball Gear shift shaft Pedal shaft Sprocket bolt
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AFAM Algi Buzzetti Doppler IGM Iris KMC Malossi MotoForce Polini RMS Schmitt Stage6 Standard Parts Top Performances Voca Racing
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Standard Parts
Fixed Gear 19 teeth 3rd gear 4-speed Simson
Article no.: MOF-41422

Fixed Gear 19 teeth 3rd gear 4-speed Simson

13,00 €
Currently not in stock
Standard Parts
Idler Gear 44 teeth 1st gear 4-speed Simson
Article no.: MOF-41421

Idler Gear 44 teeth 1st gear 4-speed Simson

19,50 €
Currently not in stock
Standard Parts
Idler Gear 36 teeth 3rd gear 4-speed Simson
Article no.: MOF-41420

Idler Gear 36 teeth 3rd gear 4-speed Simson

19,00 €
Currently not in stock
Standard Parts
Swivel Fork draw key shaft Simson
Article no.: MOF-41405

Swivel Fork draw key shaft Simson

15,50 €
Currently not in stock
Standard Parts
Shift Drum 3-speed Simson
Article no.: MOF-41387

Shift Drum 3-speed Simson

50,00 €
Currently not in stock
Standard Parts
Locking Washer clutch basket large Simson
Article no.: MOF-41385

Locking Washer clutch basket large Simson

0,60 €
Currently not in stock
Standard Parts
Idler Gear 39 teeth 2nd gear 3-speed Simson
Article no.: MOF-41367

Idler Gear 39 teeth 2nd gear 3-speed Simson

26,00 €
Currently not in stock
Standard Parts
Drive Shaft Spring Simson
Article no.: MOF-41354

Drive Shaft Spring Simson

8,10 €
Currently not in stock
Standard Parts
Idler Gear 34 teeth 3rd gear 3-speed Simson
Article no.: MOF-41344

Idler Gear 34 teeth 3rd gear 3-speed Simson

26,00 €
Currently not in stock
Standard Parts
Sealing Cap drive shaft Simson
Article no.: MOF-41343

Sealing Cap drive shaft Simson

7,10 €
Currently not in stock
Standard Parts
Bearing Bolt speedometer cable Motor Simson
Article no.: MOF-41340

Bearing Bolt speedometer cable Motor Simson

1,90 €
Currently not in stock
Standard Parts
Slotted Nut gear adjustment Simson
Article no.: MOF-41335

Slotted Nut gear adjustment Simson

4,00 €
Currently not in stock
Standard Parts
Idler Gear 29 teeth 4th gear 4-speed Simson
Article no.: MOF-41304

Idler Gear 29 teeth 4th gear 4-speed Simson

15,00 €
Currently not in stock
Standard Parts
Fixed Gear 27 teeth 4th gear Simson
Article no.: MOF-41303

Fixed Gear 27 teeth 4th gear Simson

13,00 €
Currently not in stock
Standard Parts
Idler Gear 30 teeth 4th gear 4-speed Simson
Article no.: MOF-41294

Idler Gear 30 teeth 4th gear 4-speed Simson

30,00 €
Currently not in stock
Standard Parts
Fixed Gear 26 teeth 4th gear Simson
Article no.: MOF-41293

Fixed Gear 26 teeth 4th gear Simson

25,00 €
Currently not in stock
Standard Parts
Front Sprocket 18 teeth 1/2x5.4 Simson
Article no.: MOF-40813

Front Sprocket 18 teeth 1/2x5.4 Simson

5,30 €
Currently not in stock
Standard Parts
Front Sprocket 12 teeth 1/2x5.4 Simson
Article no.: MOF-40807

Front Sprocket 12 teeth 1/2x5.4 Simson

5,30 €
Currently not in stock
Standard Parts
Rear Sprocket 34 teeth Simson
Article no.: MOF-40806

Rear Sprocket 34 teeth Simson

34,50 €
Currently not in stock
Standard Parts
Shift Lever chrome Simson KR51/1
Article no.: MOF-39577

Shift Lever chrome Simson KR51/1

11,00 €
Currently not in stock
Standard Parts
Gear Selector Shaft 5-speed Zündapp
Article no.: MOF-28807

Gear Selector Shaft 5-speed Zündapp

103,00 €
Currently not in stock
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Moped Transmission

On a moped, the drivetrain consists of two parts: the clutch, which sits directly on the crankshaft and drives the V-belt (with or without a variator), and the chain kit (final drive consisting of front sprocket, chain, and rear sprocket).

We are focusing here on the drivetrain of classic mopeds with automatic transmissions (Peugeot 103, MBK 51, Piaggio Ciao, Derbi Variant, etc.). For mopeds with manual transmissions (such as Puch or Simson), please refer to the explanations for motorcycle manual transmissions.

The front and rear sprockets have a direct influence on top speed and acceleration. A short gear ratio provides good acceleration at the expense of top speed, and vice versa.

Moped Drivetrain - Maintenance and Tuning

The final drive of a vintage moped must be maintained and can be optimized.

Transmission Maintenance

To properly maintain the transmission and all related components, refer to the owner's manual or maintenance guide. There you will find a lot of useful information: maximum chain wear limits, standard dimensions, etc.

To extend the life of your chain kit, it is recommended to clean and grease the chain regularly (a well-lubricated chain even contributes to your vehicle's performance by reducing friction losses in the transmission).

The chain guide and swingarm slider should also be replaced regularly. The chain tensioners must be functional to ensure precise adjustment of the chain tension.

Transmission Tuning

The easiest way to modify the transmission is to adjust the final drive ratio (chain kit). A longer ratio provides more top speed, while a shorter one ensures better pull.

For mopeds like Simson, it is also possible to swap the gears. Both complete gearboxes and individual parts with modified gear ratios and reinforced components are available from well-known manufacturers.

Moped Transmission Parts in Our Shop

In our online shop, we offer everything necessary to repair, maintain, and optimize your moped's drivetrain. We carry complete chain kits as well as useful accessories (chain tensioners, pedal shafts, etc.), always striving to deliver these parts at the best price and in the shortest possible time.

We offer products from various renowned manufacturers: Afam, Doppler, Buzzetti, Swiing, Motoforce, Stage6, etc.

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