Description Videos Reviews These King Main Bearings are an excellent choice when you want to rebuild your engine with better, strong parts. Fits the R52 & R53 MINI Cooper S with the W11 Supercharged Engine. Note: Don't forget your thrust bearings, the are separate! We also offer the XP series line of bearings. King Performance Engine Bearings feature: “Bull’s Eye Tolerance”*. King engine bearings have the closest wall tolerances in the industry, with all shells matched to 0.0001". Increased Height.* Greater rod bearing height improves bearing-to-bore contact/heat transfer and reduces spin potential at high RPM. Improved Oiling.* Mains feature enlarged, chamfered oil holes. Medium Eccentricity.* This enables optimum load distribution and improved oiling. Dowel Holes.* Most rod bearings are available with or without dowel holes. Narrowed Design.* Mains and rods are narrowed for large-radius crankshafts.15% - 30% greater load capacity than traditional bearings The SecureBond unique adhesion process, for superior stability between the top and intermediate layers 0.0005" metallurgically enhanced and hardened performance overlay withstands greater loads and better resists surface fatigue Mains are 1/2 grooved for uncompromised lower shell load capacity Note: We stock some sizes, other sizes are special orders. If your build is time sensitive, give us a call to check on stock. King Engine Bearings Racing line King Engine Bearings presents king racing line. this new line ... Identifying a King Bearing Set Identifying a King Bearings Set by Phillip Data, King Engine ...