Description

Polaris Ranger / Sportsman 400 / 450 / 500 Crankshaft Ball Bearing

Restore lower-end support and rotating assembly performance with this replacement crankshaft ball bearing for applicable Polaris Ranger and Sportsman 400, 450, and 500 models. The crankshaft bearing helps support smooth crankshaft movement and proper engine operation through changing RPM ranges.

During rebuild work, worn bearings can contribute to excess movement, noise, and premature component wear. Replacing bearings during service helps support a cleaner rebuild and dependable performance after assembly.

This Kit Includes

• Crankshaft Ball Bearing

Fitment

• Polaris Ranger 400
• Polaris Ranger 450
• Polaris Ranger 500
• Polaris Sportsman 400
• Polaris Sportsman 450
• Polaris Sportsman 500

Why Replace the Crankshaft Bearing?

The crankshaft bearing supports the rotating assembly and helps maintain smooth operation inside the engine cases. Over time, heat cycles and normal wear can reduce bearing performance.

Replacing bearings during engine service helps support smoother rotation and can reduce the need for repeat teardown later.

Helpful Related Parts

• Polaris Sportsman 500 Complete Crankshaft Rebuild Kit
• Polaris Ranger / Sportsman 500 Complete Engine Rebuild Kit
• Polaris Connecting Rod Rebuild Kit
• Polaris Ranger 450 / 500 Complete Bottom End Rebuild Kit

Need help selecting bearing combinations? Review the Polaris Crankshaft Bearing Mapping Guide.

If you’re planning a larger rebuild, review our Engine Rebuild Kit Guide.

Support & Resources

Need help confirming fitment before ordering? Visit Contact REV6.

You can also review our Warranty Policy, browse the FAQ, or visit the Help Center.

Take Action

Order your Polaris Ranger / Sportsman Crankshaft Ball Bearing and keep your rebuild moving with components selected to support dependable lower-end performance.

Thank you for choosing REV6 — your trusted source for high-performance powersports engines and parts. Proudly supporting U.S. veterans and servicemembers with special discounts.