ProX Crankshaft Bearing & Seal Kit 23.CBS61009 - KTM 65 SX / Husqvarna TC 65 / GasGas MC 65 2009-2025

Product Description

The ProX Crankshaft Bearing & Seal Kit restores primary bottom-end integrity on high-revving 65cc youth motocross engines. Designed to support high crank speeds and heavy loads, this complete rebuild set eliminates main journal play and maintains bottom-end primary compression for crisp throttle response off the gate.

Manufactured to precise engineering tolerances, the high-precision ball bearings and double-lip main oil seals prevent air leaks and crankcase pressure drop. The low-friction compound resists thermal breakdown caused by high-rpm 2-stroke combustion, ensuring extended service life and smooth rotation under intense race conditions.

Top Features: ProX Crankshaft Bearing & Seal Kit

• Manufactured to exact OEM specifications for maximum fitment accuracy and durability.
• Includes all necessary main ball bearings and crank seals for a complete rebuild.
• Engineered to maintain primary crankcase pressure and prevent vacuum leaks.
• Fully compatible with original equipment or aftermarket Pro-X crankshafts.

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 kit include both the main bearings and the crank seals?
A: Yes, this complete ProX rebuild kit includes all necessary main bearings and oil seals required to replace the crankshaft components.

Q: Can I use this kit with an aftermarket crankshaft?
A: This kit is engineered specifically for use with OEM crankshafts or Pro-X replacement crankshafts.

Expert Pro-Tip: When installing new crank bearings into two-stroke engine cases, place the bearings in the freezer for an hour and gently heat the clean engine case halves with a heat gun. The thermal expansion allows the cold bearings to drop smoothly into the case journals without damaging the precision seating surfaces.

Recommended Pairings:

• KTM 65 SX Performance Parts & Upgrades
• Husqvarna TC 65 Performance Parts
• GasGas MC 65 Performance Parts

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 bikes. We pride ourselves on great customer service, and every item ships FAST - straight to your door.

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