Cryogenic hardened race N18 engine timing chain set for all MINI S 2011-2013. Design by Sneed4Speed for use in high performance track and race engines. Super strength Cryogenic hardened timing chain will not stretch like the stock chain. Kit also includes heavy duty plastic guides and high strength tensioner are designed for track and race use and abuse but will still work on the street. These sets are standard equipment in all Sneed4Speed Super Sport and Race engines. This kit will also fit the N16 and N12 engines.