Yukon Gear & Axle (YPKF9.75-PC) Trac Loc Clutch Set for Ford 9.75&Prime; Trac Loc positraction, 16 Pieces 1 Year Warranty Higher Quality Than OEM Engineered to Fit Specific Differential Applications Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers Higher Quality Than OEME ngineered to Fit Specific Differential ApplicationsY ukon clutch kits come in smooth and aggressive designsR ebuild your Limited Slip Posi-Traction Differential