Today's trails and riders demand more from their equipment than ever before. With that in mind, we've created a steel rear axle for 148mm Neo hubs that's optimized for durability. With only a 40g weight difference over our standard 148 alloy axle, our new OS option is designed to handle anything you can throw at it. High-precision centerless ground treatment ensures perfect bearing fit. Compatible with all Neo 6 bolt and Centerlock hubs.