Yukon steel spool for GM 14 bolt truck with 30 spline axles, 4.10 & down

YP FSGM14T-3-30 Yukon steel spool for GM 14 bolt truck with 30 spline axles, 4.10 & down Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. 4.10 and down ratio only or 4.56 and up thick gears Fits GM 10.5″ 14 bolt truck with 30 spline axles Not recommended for street driven vehicles Provides 100% traction to both wheels at all times Manufacturer: Yukon Gear & Axle Weight: 28.10 Shipping Length: 10 inches Shipping Width: 10 inches Shipping Height: 10 inches COMPATIBLE DIFFERENTIALS GM 10.5" 14 Bolt Truck, '84-'85 Only GM 10.5" 14 Bolt Truck, '88 & older (excluding '84-'85) GM 10.5" 14 Bolt Truck, '89-'98 GM 10.5" 14 Bolt Truck, '99 & up COMPATIBLE MAKE / MODEL Chevrolet / Chevy Avalanche 2500 (2002 - 2006) Chevrolet / Chevy C20 3/4 Ton (2WD) (1973 - 1983) Chevrolet / Chevy C2500 3/4 Ton (2WD) (1989 - 1998) Chevrolet / Chevy C30 1Ton (2WD) (1973 - 1983) Chevrolet