Audi S2 & RS2 forged pistons-set WISECO

Forged high-performance pistons for all Audi S2 and RS2 engines from WISECO. Features: Original Wiseco Extremely light due to special alloy Reinforced for maximum performance Also for standard bore 81.00mm 20mm piston pin Compression ratio 7.2:1 Piston skirt coated for less friction Complete set incl. piston pin, rings and clips Installation and drilling dimensions enclosed For Audi S2 and RS2 5 cylinder 20V with engine code 3B, RR, AAN, ABY and ADU. The specified compression is in conjunction with a 1mm cylinder head gasket. From a boost pressure of 2 bar, reinforced TURBO piston pins must be used. (see below) Made in USA Picture shows example piston. The scope of delivery naturally includes 5 piston. For piston which are labelled with a Q in the design, adjustments must be made to the oil spray nozzles of the piston crown cooling system.