ENGINES 9-2 FUEL SYSTEMS 9-6 TOP END 9-20 ... - S&S Cycle

Parts forTwin Cam 88®Parts forEvolution®Parts forSportster® '86-'06VintageEnginesCTOThe S&S B2 cylinder heads were originally developed for the now legendaryS&S Tribute 145 engines. They have been used in a number of otherapplications on the race track and on the street. B2 cylinder heads for 43/8"bore engines have a slightly different combustion chamber, and a differentmounting bolt pattern than the B2 cylinder heads for 41/8" bore engines.B2 head kits come with S&S .660" lift valve springs which is adequate formost high performance street applications. However, S&S .720" lift springscan be substituted if higher lift is required. Kits do not include gaskets,hardware, or intake and exhaust flanges. These parts must be purchasedseparately. See the line drawing for replacement components page 7-70.Valve Size Valve Lift .700" Lift Flow @ 28" H2OIntake Exhaust Intake ExhaustX-Wedge®Parts for Victory®,Off-road & MetricReplacementParts2.200" 1.700" .660" 220 185*Results: Super Flow 1020 flow bench - S&S Research and Development Dept. Viola, WIS&S® B2 Replacement Head Kits For 43/8" Bore Engines.Engine StyleTypicalDisplacementChamberVolumeFinishPart Number1999-up bt 145" 105cc Natural 90-12491999-up bt 126"Special order93cc(decked)Natural 90-1247Head, Kit, Special Order, 1999-up bt B2 ......................106-6385Tools &Shop SuppliesORDERING INFORMATIONIntake Flange and Seal Kit ......................................16-0250RacingProductsDealer Services& Promo ItemsWarranty &Company PolicyPlease provide the following information when ordering S&S special application B2 cylinder heads❚❚ Head set or single? Finish option❚❚ Assembled?❚❚ Engine style❚❚ Pushrod geometry❚❚ Head bolt pattern (choice of stock, 41/8" or 43/8")❚❚ S&S chamber machining or no chamber machining?❚❚ Valve guides?❚❚ Spring type?❚❚ Decked heads?Order toll free 866-244-26739-30