ProX Crankshaft Bearing and Seal Kit 23.CBS21093 — Yamaha YZ80 / YZ85 1993-2018

Product Description

Ensure your engine's longevity and performance with the ProX Crankshaft Bearing and Seal Kit. Designed to meet or exceed exact OEM specifications, this kit provides a cost-effective and reliable solution for your next bottom-end rebuild. Whether you are replacing worn components or performing a full engine overhaul, these high-quality bearings and seals are engineered to withstand the rigors of competitive 2-stroke motocross riding.

Each kit is meticulously crafted to ensure a perfect fit, providing maximum performance and the durability needed to keep your Yamaha running strong. This kit is optimized for use with either original equipment (OEM) or ProX crankshafts, making it the ideal choice for mechanics and riders who demand consistency and precision in every engine component.

Top Features: ProX Crankshaft Bearing & Seal Kit

• OEM Quality Standards: Manufactured to precise OEM specifications for reliable, long-lasting performance.
• Comprehensive Kit: Includes all essential bearings and seals required for a standard crankshaft component replacement.
• Engineered for Durability: High-grade materials designed to handle high RPMs and the stresses of 2-stroke engines.
• Versatile Compatibility: Perfectly matched for use with both OEM and ProX brand crankshaft assemblies.

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: Should I replace my crank seals when replacing bearings?
A: Absolutely. Crank seals are essential for maintaining proper crankcase pressure and preventing oil leaks; always replace them whenever you replace your crankshaft bearings.

Q: Is this kit compatible with non-OEM crankshafts?
A: Yes, this ProX kit is specifically designed to be compatible with both OEM crankshafts and ProX replacement crankshafts.

Expert Pro-Tip: When installing new crank seals, apply a very light film of clean two-stroke oil or high-temp assembly lube to the seal lip. This prevents the rubber from dry-rubbing against the crankshaft surface during the first start-up, which is critical for preventing early seal failure.

Recommended Pairings:
o Yamaha YZ85 Performance Parts & Upgrades
o Yamaha 2-Stroke Engine Performance Parts
o Essential Motorcycle Shop Tools

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. Every order ships fast from our Central Florida location.

Moto-House MX – Choice of Champions – Clermont / Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.