Wossner 2-Stroke Crankshaft Assembly CS2018 - Yamaha YZ125 / YZ125X 2005-2022

Product Description

The Wossner 2-Stroke Crankshaft Assembly is engineered to restore bottom-end performance and engine reliability for 125cc motocross and cross-country race bikes. Built as a precision standard replacement, this heavy-duty crankshaft and connecting rod assembly ensures smooth rotational balance and maximum durability under aggressive riding and racing conditions.

Each unit comes fully assembled with the connecting rod and includes a top-end wrist pin bearing for a straightforward installation. Designed to meet strict engineering standards, this assembly provides confidence when rebuilding your engine's bottom end.

Top Features: Wossner Crankshaft Assembly

• Includes complete crankshaft and connecting rod assembly ready for installation.
• Includes top-end wrist pin bearing for a complete bottom-end overhaul.
• Standard replacement crankshaft assembly manufactured to precise performance tolerances.
• Specifically engineered for 2-stroke off-road competition engines.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this crankshaft assembly come with a top-end bearing?
A: Yes, the assembly includes both the connecting rod and the top-end wrist pin bearing.

Q: Is this a standard OEM replacement crankshaft?
A: Yes, it is a standard replacement crankshaft assembly built to match factory specifications.

Expert Pro-Tip: When installing a new crankshaft, always replace your main crank bearings and crank seals at the same time. Ensure the crankcase mating surfaces are thoroughly cleaned and dry fit before applying liquid gasket sealant to guarantee a leak-free crankcase seal.

Recommended Pairings:

• Yamaha YZ125 Performance Parts & Upgrades
• Piston / Top-End Kits Performance Parts
• Engine Rebuild Kits Performance Parts

About Moto-House MX

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their machines. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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