S&S Cycle 90-1504 Super Stock EVO Cylinder Heads - Black engine-pistons-piston-rings engines are boosted to 100in

engines are boosted to 100in

2014-2018 Can-Am Spyder RT (SM6)

2012-2014 KYMCO MXU500 4x4 IRS

2013-2014 Kawasaki EX300 Ninja 300 ABS

2011-2014 Gas Gas EC 300E

S&S Cycle 90-1504 Super Stock EVO Cylinder Heads - Black engine-pistons-piston-rings engines are boosted to 100inS&S heads give great performance now, and work perfectly with additional upgrades later. Kits are fully assembled, and include stainless steel valves and high lift springs (up to . 640 lift). Available in natural and black powder coat finish. Intake manifold, pistons and gasket kits are sold separately; gasket kits contain head gaskets, base gaskets and exhaust pipe gaskets (rocker box gaskets are not included due to the variety of available rocker