Yukon Bearing install kit for 09 & newer GM 8.6 differential. Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit.. Yukon Bearing Installation Kits are perfect for shops and builders who have shims on the shelf and are looking to save cost over a Master Overhaul Kit. This kit uses Timken bearings and races along with all high-quality small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to properly install your ring and pinion gear set.