Description
Refresh your supercharger with the R&D Supercharger Bearing Rebuild Kit for Kawasaki Ultra 250X 260X 300 and 310 models. This complete kit replaces worn bearings restores smooth operation reduces noise and drag and brings back full boost efficiency and reliability on high-mileage or hard-run Ultras.
Kit Contents & Benefits
- Includes high-quality replacement bearings seals and necessary hardware
- Reduces supercharger whine drag and heat buildup
- Restores OEM-level or better performance and longevity
- Compatible with 2007-2010 Ultra 250X/260X models (check exact fit for 300/310)
Worn supercharger bearings are a common issue on these Kawasaki models especially after aggressive riding or high hours. Symptoms include increased noise loss of boost power fade or metal shavings – this kit addresses all of them preventing bigger failures and keeping your engine protected.
Quality & Performance Focus
R&D sources premium bearings rated for high RPM marine conditions. The kit is designed for a precise fit making the rebuild straightforward and effective whether you are doing routine maintenance or prepping for more power.
- Lowers operating temps and extends supercharger life
- Improves throttle response by reducing parasitic drag
- Essential for 300+ hp builds or race prep
- Proven on both recreational and competitive Ultra platforms
Get your supercharger spinning freely again and protect your investment in the Kawasaki Ultra series.
Rebuild Tips
Use during full supercharger service: follow R&D or service manual steps for disassembly cleaning and reassembly. Torque to spec use proper preload and inspect shaft/gear condition. Pair with R&D thrust bearing or tensioner wheel for complete refresh.
Revive your Kawasaki Ultra supercharger with the R&D Bearing Rebuild Kit.







