Mini R52 R53 Cooper S JCW W11B16A W11 Timing Chain Kit & Tensioner
Fits: Mini One Cooper S JCW R50 R52 R53 W10B16A & W11B16A Engines. Crank and cam gears are correctly heat treated. You are buying a Timing Chain Kit. 1 XTiming Chain 11 31 1 485 400. Should be fitted by a Professional.