Description
The Full Speed Ahead Rear X12 End Cap is designed for rear axle conversion kits that adapt your FSA hub to fit an X12 axle system. This drive-side end cap is compatible with MS hubs and made from durable alloy for reliable performance.
- Fits X12 axle systems for rear axle conversion on compatible hubs.
- Designed for drive side installation on the rear axle.
- Compatible with MS hubs for easy integration.
- Constructed from durable alloy for strength and longevity.
- Enables axle measurement adjustments for new group set compatibility.





