These 11.1:1 High-Compression Pistons are forged from light- weight aluminum for maximum strength 4.060″ Bore, .010 o/s, SST Rings The piston top dome is designed to match specifically with the combustion chamber to provide additional performance over other piston designs. Pistons are electroless-nickel coated for increased durability, and the piston skirts feature a unique black coat- ing for improved wear-resistance, better fit and reduced noise Complete kit includes pistons, rings, wrist pins and clips Note Fits Harley-Davidson ’99-later Twin Cam models equipped with 4.060″ cylinders and Screamin Eagle MVA, 110 or ACR Performance Cylinder Heads. ’99-’06 models also require appropriate Screamin Eagle 4-3/8″ Stroker Flywheel and Rod Assembly. Does not fit Twin-Cooled models. All EFI models require ECM calibration* (priced separately). For race application only.
