S&S Cycle 106-4277 Super Stock 79cc Cylinder Head Kit - .640in. Lift Springs - Silver Powder-Coat helmets-modular-helmets-snow 1999-2005 Harley Davidson FXD Dyna

1999-2005 Harley Davidson FXD Dyna Super Glide

Polyamide stretch inserts for abrasion resistance and enhanced freedom of movement

Includes S&S 3

100 percent CNC manufactured in the USA

2007-2016 Harley Davidson FLHR Road King

S&S Cycle 106-4277 Super Stock 79cc Cylinder Head Kit - .640in. Lift Springs - Silver Powder-Coat helmets-modular-helmets-snow 1999-2005 Harley Davidson FXD DynaCompression release machining Must use S&S rocker boxes (PART #90 4110) if S&S compression releases are used. High port flow gives great performance now, and more later when additional upgrades are done. Heads are fully assembled with springs and valves, and are available in silver or black powder coat finish to match OEM components. Compression ratios vary depending on cylinder heads chosen, pistons used and engine displacement. Heads are machined