This 3-5/8" big bore kit will increase the displacement of stock 80" Evolution big twin engines to 88" using the stock 4-1/4" flywheels. The kit includes S&S 3-5/8" borecylinders, 3-5/8" bore flat topped forged pistons with rings and wristpins, head gaskets, base gaskets, exhcaust gaskets, and instructions. The cylinders are shorter than stock, so shorter pushrods, and shorter manifold will be needed to complete the engine. Stock cases will need to be bored out to 3 5/8".

This Part Fits:

Year	Make	Model	Submodel
1994-1998	Harley-Davidson	FLHR Road King	Base
1984,1987-1993	Harley-Davidson	FLHS Electra Glide Sport	Base
1986-1998	Harley-Davidson	FLHT Electra Glide Standard	Base
1989-1997	Harley-Davidson	FLHTC Electra Glide Classic	Base
1986-1990	Harley-Davidson	FLST Heritage Softail	Base
1988-1995,1997-1999	Harley-Davidson	FLSTC Heritage Softail Classic	Base
1990-1995,1997-1999	Harley-Davidson	FLSTF Fat Boy	Base
1993	Harley-Davidson	FLSTN Heritage Softail Nostalgia	Base
1994-1995	Harley-Davidson	FLSTN Heritage Softail Special	Base
1997-1999	Harley-Davidson	FLSTS Heritage Springer	Base
1989-1993	Harley-Davidson	FLTC Tour Glide Classic	Base
1996	Harley-Davidson	FLTCUI Tour Glide Ultra Classic	Base
1998	Harley-Davidson	FLTR Road Glide	Base
1995-1998	Harley-Davidson	FXD Dyna Super Glide	Base
2016	Harley-Davidson	FXDB Street Bob	Base
1992	Harley-Davidson	FXDB-D Dyna Glide Daytona	Base
1992	Harley-Davidson	FXDC Super Glide Custom	Base
2016	Harley-Davidson	FXDF Fat Bob	Base
1993-1998,2016	Harley-Davidson	FXDL Dyna Low Rider	Base
2016	Harley-Davidson	FXDL Low Rider	Base
2016	Harley-Davidson	FXDLS Low Rider S	Base
1993-1998,2016	Harley-Davidson	FXDWG Dyna Wide Glide	Base
1986-1994	Harley-Davidson	FXR Super Glide II	Base
1984-1995,1997-1999	Harley-Davidson	FXST Softail Standard	Base
1999	Harley-Davidson	FXSTB Night Train	Base
1988-1995,1997-1999	Harley-Davidson	FXSTS Springer Softail	Base
1995,1997	Harley-Davidson	FXSTSB Bad Boy	Base