ProX Crankshaft Bearing & Seal Kit 23.CBS62001 - KTM / Husqvarna / GasGas / Husaberg 125-200cc 1998-2023

Product Description

The ProX Crankshaft Bearing & Seal Kit restores primary bottom-end integrity on high-revving 125cc to 200cc 2-stroke engines. Designed to support extreme crankshaft rotation speeds and high thermal loads, this complete rebuild package eliminates main journal play and maintains bottom-end primary compression for crisp throttle response and maximum power delivery.

Manufactured to precise engineering tolerances, the high-precision ball bearings and double-lip main oil seals prevent air leaks and crankcase pressure drops. The low-friction compound resists premature breakdown under demanding race conditions, ensuring extended service life and smooth crank rotation across the entire powerband.

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 125 SX & 150 SX Performance Parts & Upgrades
• Husqvarna TC 125 Performance Parts
• GasGas MC 125 Performance Parts

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