Description
If you’re running your 2003-2004 Polaris 700 Classic at sustained high RPMs, factory bearings wear quickly under extreme conditions. The Wiseco B1031 top end bearing delivers the durability and precision you need to maintain consistent performance and reliability, whether you’re pushing hard on the track or tackling demanding terrain. This is a straightforward upgrade that eliminates guesswork and keeps your engine running strong.
- High-silicon aluminum alloy
- Case-hardened construction
- 20x25x22.8mm dimensions
- Optimized for high-speed operation
- Precision-manufactured tolerances
- Reduced engine weight
- Bolt-on installation
- OEM replacement fitment: 2003-2004 Polaris 700 Classic
- Part number: B1031
