Rebuild your Traction-Lok in your 8.8 rear end with 2010-2014 Mustang rear differential carrier hardware. When installing gears, its always a good idea to rebuild your traction-lok to save time and money later down the road. Our Ford spider gear kits are available for 28 and 31 spline differentials in 8.8" rear ends. Traction-lok rebuild kits from Yukon and Ford Racing contain all of the carbon clutches you need to upgrade to a better set. Make sure to replace your cross pin and cross pin bolt while you are in there, as they are considered wear parts. Parts fit 2010, 2011, 2012, 2013, and 2014 s197 Mustangs.