Halo Rear Axle Solid 10x135 Kit Spin Doctor Model-Booster Pro } Optimized for mechanical efficiency

} Optimized for mechanical efficiency

Hanger # D616

}Shimano CS-HG41 Cassette - 7 Speed 11-28t Silver

Rear Hub Bearings: One 6901 (non-drive side) One 71801 Angular Contact (drive side)

Halo Rear Axle Solid 10x135 Kit Spin Doctor Model-Booster Pro } Optimized for mechanical efficiencyVarious replacement axles and conversion kits for Spin Doctor, Spin Doctor Pro, and Spin Doctor 2 hubs, see item notes for specific fitment Some conversions utilize pre existing axle components for retrofit Conversion kits for original Spin Doctor and Spin Doctor Pro hubs are not compatible with Spin Doctor 6 Drive hubs Model Spin Doc Description Solid 10x135mm Axle