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The crankshaft is one of the main components of the engine and is responsible for the smooth operation of motorcycle, scooter and moped, whether with two-stroke or four-stroke engine. The longevity of the engine depends not only on the proper condition of the crankshaft, but also on the fact that it is properly mounted. For a correct installation of the crankshaft, we recommend our tutorial: Crankshaft disassembly and assembly.
Two different versions are already factory-fitted in the GY6 engines. The only difference is the drive gear for the oil pump on the right-hand side. The old crankshaft version with 16 teeth used in almost all scooters has a gear with 16 teeth. The newer crankshaft version with 22 teeth is used, for example, on new Rex models. To be on the safe side, please recount the teeth of the gearwheel for the oil pump drive.
Crankshaft OEM quality GY6 (4-stroke) 139QMA / 139QMB with 22 teeth, low-priced replacement crankshaft for your old/damaged/worn one. The crankshaft ist pre-pressed and comes with main bearings and connecting rod.
Two different versions are already factory-fitted in the GY6 engines. The only difference is the drive gear for the oil pump on the right-hand side. The old crankshaft version with 16 teeth used in almost all scooters has a gear with 16 teeth. The newer crankshaft version with 22 teeth is used, for example, on new Rex models.
  • SKU: MF30.13901
  • Availability: in stock Many in stock Out of stock You can purchase this product but it's out of stock

Crankshaft Teknix GY6 50 139QMB (22 Teeth)

$141.99
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DESCRIPTION

This crankshaft is a great alternative to replacing your faulty original crankshaft. It features a high-quality finish and balance, ensuring reliable operation at all engine speeds.

The crankshaft is an essential element for the proper functioning of a scooter, whether it is equipped with a 2-stroke or 4-stroke engine. The longevity of your engine will depend on its condition , but also on its assembly.

-The timing chain drive sprocket is made up of 22 teeth.

Crankshaft OEM quality GY6 (4-stroke) 139QMA / 139QMB with 22 teeth, low-priced replacement crankshaft for your old/damaged/worn one. The crankshaft is pre-pressed and comes with main bearings and connecting rod.

The crankshaft is one of the main components of the engine and is responsible for the smooth operation of motorcycle, scooter and moped, whether with two-stroke or four-stroke engine.