S&S Cycle Super Stock Cylinder Head Kit – 900-0349 For Harley Motorcycles 2006-2017

Description

High port flow gives great performance now, and more later when additional upgrades are doneHeads are fully assembled with springs and valvesCompression ratios vary depending on cylinder heads chosen, pistons used and engine displacement; see Compression Ratios chart for specifications79cc heads work great with stock motors for 88″ to 103″ motors; 89cc heads work best for motors over 103″ or with high-compression pop-up pistons79cc have 1.940″ intake and 1.575″ exhaust valve and springs for up to .640″ lift; 89cc have 2.000″ intake and 1.605″ exhaust and .640″ springsHeads are machined for compression releases unless noted otherwise (sold separately); S&S rocker boxes required when using S&S compression releasesDo not include rocker arm components, intake manifold or gasketsHeads include four long headbolts, and reuse four long OEM headboltsAccept OEM intake manifoldsMade in the U.S.A.Must use S&S rocker boxes (PART 90-4110) if S&S compression releases are used.Not compatible with Twin Cooled heads.SpecsProduct NameCylinder Head KitModelSuper StockColor/FinishPowder-Coated / Wrinkle BlackMaterialAluminumDisplacement91 ccUnitsPairRiding StyleStreet