Yukon 4340 Chrome Moly alloy left hand rear axle for Model 35 heavy duty (drum brakes) with a 54 tooth, 2.7″ ABS ring. axle has a length of 30-11/16″ inches and 27 splines. 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. This is a C-clip axle.