Description
S&S Cycle Super Stock 89cc Cylinder Head Kit: 99-05 Harley-Davidson Big Twin Models - 106-4270
Fitment: 99-05 Harley-Davidson Big Twin models
These S&S Super Stock high performance cylinder heads are designed for 99-05 engines with stock crankcase. They work well with engines of stock displacement, but are ideal for somewhat larger stroker or big bore engines up to 110". The 89cc combustion chamber provides a slightly higher than stock, but still manageable compression ratio in larger than stock engines. This makes them a good choice for touring bikes and other heavy vehicles. The large 2.000" intake and 1.605" exhaust valves maintain port velecity for good low and midrange response, but supply enough air for slightly larger engines to perform to their full potential. S&S High performance valve springs allow the installation of camshafts with up to .650" lift. Intake ports flow 264 cfm compared to stock heads at 182cfm. S&S High performance valve springs allow the installation of camshafts with up to .650" lift. Compatible with stock rocker boxes, exhaust, and intake manifolds. Silver powder coat finish matches stock silver engine components.
Features:
- Heads are fully assembled with springs and valves
- Do not include rocker arm components, intake manifold or gaskets
- Accept OEM intake manifolds
- Made in the U.S.A.
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
