Bore: Bore Not AvailableCompression: 10.5:1 CompressionSizing: 0.20mm OversizeForged piston crown with generous valve pockets for big valves and cams. Precision-fit rings selected for each application for ultimate sealing. Force-fed pin oiling provides enhanced lucubration of the piston pin. Pressure seal groove reduces ring lifting and power loss. ArmorGlide skirt coating reduces friction, providing quieter operation and improving scuff resistance. Valued-packaged with two pistons, rings, piston pins and circlips. Made in the U.S.A.. Requires Screamin Eagle module on fuel-injected models.. VM-Ring package.This item fits the following vehicle applications:compatible with Harley Davidson FLHR Road King 1999-2006compatible with Harley Davidson FLHRCI Road King Classic 1999-2006compatible with Harley Davidson FLHRI Road King 2000-2006compatible with Harley Davidson FLHRS Road King Custom 2004-2006compatible with Harley Davidson FLHRSI Road King Custom 2004-2006compatible with Harley Davidson FLHT Electra Glide Standard 1999-2006compatible with Harley Davidson FLHTC Electra Glide Classic 1999-2005compatible with Harley Davidson FLHTCI Electra Glide Classic 1999-2006compatible with Harley Davidson FLHTCUI Electra Glide Ultra Classic 1999-2006compatible with Harley Davidson FLHTI Electra Glide Standard 2003-2006compatible with Harley Davidson FLST Heritage Softail 2006compatible with Harley Davidson FLSTC Heritage Softail Classic 2000-2006compatible with Harley Davidson FLSTCI Heritage Softail Classic 2001-2006compatible with Harley Davidson FLSTF Fat Boy 2000-2006compatible with Harley Davidson FLSTFI Fat Boy 2001-2006compatible with Harley Davidson FLSTI Heritage Softail 2006compatible with Harley Davidson FLSTN Softail Deluxe 2005-2006compatible with Harley Davidson FLSTNI Softail Deluxe 2005-2006compatible with Harley Davidson FLSTS Herit