Moose Offroad 24-1128 2013-2025 Beta 250/300 RR Xtrainer Crank Bearing and Seal Kit — Factory Quality

Moose Offroad — Precision Crankshaft Rotation, Eliminate Engine Vibration and Protect Your Bottom End

A worn main bearing can lead to devastating engine failure and costly crankcase damage. This Moose Offroad Crank Bearing and Seal Kit is designed to restore the mechanical integrity of your engine's bottom end, providing the smooth, high-RPM stability required for competitive 2-stroke performance.

Every kit is manufactured to Factory Quality standards, featuring precision-ground bearings and specialized seals. For 2-stroke applications, the seals are engineered with a fluorocarbon lip, specifically designed to reduce dry-start friction and ensure a perfect vacuum seal for consistent fuel-air delivery.

• Precision-matched right and left crankshaft bearings for balanced rotation.
• Includes high-performance outer seals with fluorocarbon lips to minimize friction.
• Reduces parasitic drag during cold starts to protect the crank journals.
• Engineered to withstand the high temperatures and pressures of 2-stroke combustion.
• Complete kit simplifies the rebuilding process with all necessary Factory Quality components.

Moto-House MX Pro Tip:

When installing new crank bearings, never use a hammer to seat them. We recommend using a dedicated bearing driver or the "freeze-and-heat" method to ensure the bearings drop into the cases perfectly square. Even a slight misalignment during installation can lead to premature failure and increased vibration through the footpegs.

Year	Make	Model
2013-2025	Beta	250 RR / Race Edition / X-Pro
2013-2024	Beta	300 RR / Race Edition / RX
2015-2024	Beta	300 Xtrainer

FAQ Questions

Q) Does this kit include the transmission bearings?
A) No, this kit specifically contains the right and left crankshaft main bearings and the necessary outer seals for 2-stroke models.

Q) Are these bearings C3 rated for high-speed use?
A) Yes, Moose Offroad precision bearings are designed for high-RPM motocross and off-road applications, meeting Factory Quality standards for clearance and durability.

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. We are the best motocross shop in Central Florida with lightning-fast shipping.