GM 10-bolt (8.5", 8.6")

GM 10-bolt 8.5" and 8.6" rear axles are common under full-size and mid-size GM trucks and SUVs. Lockers and spools for this axle must match 30-spline shafts, carrier break, and whether you run a positraction or open carrier from the factory.

Verify your ring gear diameter (8.5" vs. 8.6") and axle code before selecting a locker. Browse compatible units below and cross-check spline count and gear ratio limits in each product listing.