Description Upgrade your stock trac loc unit with the heavier duty carbon clutch discs Kit includes carbon fiber clutch pack, shims, S-spring and instruction sheet Fits all 8.8″ Traction-Lok differentials but upgraded spring may not fit with 28 spline axles Carbon fiber discs designed for higher torque usage Originally used in 2003-04 and 2007 SVT Mustang Cobra Suggest running 75w140 fluid with friction modifier
