3500 11-18 GM9.25F/GM10.5 4.10

Complete ring and pinion gear kit, designed to restore differential stability, especially after modifying tire size. Includes all necessary ring gears, pinions, and bearing kits for installation. Features extra-strong 8620 steel ring gears (9.25-inch front, 10.50-inch rear). Ring and pinion gears are lapped for precise fit. Requires mechanical expertise for installation; all necessary hardware included. 4.10 gear ratio, requiring a 4.10 and lower rear carrier. Motive Gear offers tough drivetrain components and a wide range of performance ring and pinion options, developed from racing and extensive in-house testing.