The Yukon Dura Grip limited-slip positraction unit fits 55P GM differentials with 17‑spline axles and supports 3.73 gear ratios and down. Built with a nodular case, forged 4320 chromoly spider gears and composite clutches, the Dura Grip offers rebuildable construction and heavy-duty gearing. Assembled in the USA, it is engineered for durable, repeatable limited-slip traction across varied driving conditions.
Yukon Gear Dura Grip Positraction For 55P GM w/ 17 Spline Axles