S&S Cycle 106-3240 Super Stock 89cc Cylinder Head Kit - .640in. Lift Springs - Winkle Black engine-valve-train-shims 2008-2015 KTM 250 XC-W

2008-2015 KTM 250 XC-W

2007 Harley Davidson FLHT Electra Glide Standard

1999 Yamaha YFM400F Kodiak 4x4

Accordion stretch inserts on shoulder and underarm

S&S Cycle 106-3240 Super Stock 89cc Cylinder Head Kit - .640in. Lift Springs - Winkle Black engine-valve-train-shims 2008-2015 KTM 250 XC-WCompression 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