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S&S 89cc heads have a whopping 264cfm flow rate (compared to 182cfm for stock H-D® heads), larger valves and .640" lift valve springs. S&S recommends S&S Easy Start cams or manual or electric compression release system in order to maintain reliable engine starting on high compression applications. FEATURES AND BENEFITS: ??Heads can be decked up to .060" to increase compression ??89cc heads have 2.000" intake and 1.605" exhaust valves ??S&S 0.640" lift valve springs ??Stock Harley-Davidson® rocker boxes can be retained if S&S manual compression release or S&S Easy Start cams are used. Must use S&S valve cover gasket kit part #90-4120 with stock rocker covers ??Includes 4 head bolts and rocker base gaskets to complete install
Product specifications | |
---|---|
Vendor part # | 106-4270 |
Weight | 13.0500 Kg |
UM | EA |
MODEL | Super Stock |
MATERIAL | Aluminum |
DISPLACEMENT | 89 cc |
COLOR/FINISH | Powder-Coated| Silver |
PRODUCT NAME | Cylinder Head Kit |
BASE COLOR | Silver |
BASE FINISH | Powder-Coated |
UNITS | Pair |