GM 8.6" Rear, 1999 and newer Trucks. Has 10 bolt cover and 30 spline c/clip axles.
Ring Gear Diameter: 8.500Cover Bolts: 10Ring Gear Bolts: 10Spline Count: 30Dropout: FalsePinion Support: FalseCarrier Breaks: 2.56 / 2.73Rear Suspension: Solid