Yukon 4340 Chrome Moly rear axle for D60, D70 & D80, 35 spline. This is a cut to fit axle which fits 40 to 43.5 applications. Yukon 4340 Chrome Moly alloy axles offer a strength increase over stock while retaining a low cost. Yukon 4340 Chrome Moly alloy rear axles come with a limited lifetime warranty against manufacturing defects. Product Features:Fits Dana Spicer 60, 70 and 804340 Chromoly35 splineCut to length design fits 40-43.5 applications8 x 3.96 bolt pattern