SPEEDSYNC SPEC: Speedsync 6 pawl system engages in sets of three, doubling engagement speed Forged steel 36t ratchet ring for 72 points of contact, 5-degree engagement 100% precision CNC machined hub shell with additional weight saving machining Stainless bearings with triple bearing axle support Wide stance bearing placement in freehub for more strength and support Co-molded high-durometer main seal DURASYNC SPEC: Durasync system engages 6 pawls simultaneously Forged steel 36t ratchet ring for 36 points of contact, 10-degree engagement 100% precision CNC machined hub shell Chromed steel bearings with triple freehub bearing axle support Wide stance bearing placement in freehub for more strength and support Co-molded, high durometer main seal Seven step swaged and centerless ground axle for strength and precision Forged steel 36t ratchet ring for stronger grain structure