Wiseco (40090M08800) 88.00mm 13:1 High Compression Ratio 4-Stroke Piston Kit Fits: KTM 350 EXC-F, XC-F, XCF-W, Freeride 2012-14; Husaberg FE350 2013 Forged from high-silicon aluminum alloy for maximum strength and dependability Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy ArmorGlide skirt coating provides reduced friction, quieter operation, improved scuff resistance All Wiseco High-Performance Motorcycle Pistons come with rings and circlips