Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt-in kits do not require machining, rebalancing or engine removal, and include just about everything you’ll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining!

This Part Fits:

Year Make Model Submodel 2007-2016 Harley-Davidson FLHR Road King Base 2007-2013 Harley-Davidson FLHRC Road King Classic Base 2007 Harley-Davidson FLHRS Road King Custom Base 2007-2009 Harley-Davidson FLHT Electra Glide Standard Base 2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base 2007-2016 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base 2015-2016 Harley-Davidson FLHTKL Ultra Limited Low Base 2014-2016 Harley-Davidson FLHTKSE CVO Limited Base 2007-2016 Harley-Davidson FLHX Street Glide Base 2014-2016 Harley-Davidson FLHXS Street Glide Special Base 2010,2015-2016 Harley-Davidson FLHXSE CVO Street Glide Base 2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base 2007-2016 Harley-Davidson FLSTC Heritage Softail Classic Base 2007-2016 Harley-Davidson FLSTF Fat Boy Base 2010-2016 Harley-Davidson FLSTFB Fat Boy Lo Base 2008-2011 Harley-Davidson FLSTSB Cross Bones Base 2010 Harley-Davidson FLSTSE CVO Softail Convertible Base 2007-2010,2016 Harley-Davidson FLTR Road Glide Base 2011-2013,2016 Harley-Davidson FLTRU Road Glide Ultra Base 2011,2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base 2010-2013 Harley-Davidson FLTRX Road Glide Custom Base 2015-2016 Harley-Davidson FLTRXS Road Glide Special Base 2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base 2007-2009,2014-2016 Harley-Davidson FXDL Dyna Low Rider Base 2007-2008,2010-2016 Harley-Davidson FXDWG Dyna Wide Glide Base 2007-2009 Harley-Davidson FXSTB Night Train Base 2007-2010 Harley-Davidson FXSTC Softail Custom Base 2007 Harley-Davidson FXSTD Softail Deuce Base 2007 Harley-Davidson FXSTSSE Screamin Eagle Softail Springer Base 2009 Harley-Davidson FXSTSSE3 CVO Softail Springer Base