- Front axle conversion for Spin Doctor hub
- Various replacement axles and conversion kits for Spin Doctor and Spin Doctor Pro hubs
- 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
- 14mm nutted "stub" bolt-on system requires Halo Front Axle Replacement Kit (sold separately)