Buy the best and affordable R56 Piston Ring Set at Sneed4Speed. We at Sneed4Speed offer a set of 4 aftermarket ring sets of the OEM Mini S and JCW pistons in N14 and N18 engines. It is designed for use with the MINI’s 77mm pistons. Our pistons are manufactured from extruded high silicon that has low thermal expansion and features excellent wear resistance. For more information, visit us today!