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S&S® 80FLSS HOT SET UP KIT® WITH SUPER STOCK® CYLINDER HEADSFOR 1984-'99 STOCK DISPLACEMENT CARBURETED BIG TWIN ENGINES.S&S Super Stock cylinder heads provide the kick inthis kit for stock displacement Harley-Davidson®Evolution® big twin engines. Installation is as easyas a stock top-end rebuild. Flywheel rebalancing is notrequired. A great starting point for future performanceupgrades. Most components in this kit can still be used ifa stroker or big bore kit is added later.The S&S 80FLSS Hot Set Up Kit yields 80 cubic inches at 10.1:1compression ratio.NOTE: Pistons are sold separately.See chart below.THE S&S® 80FLSS HOT SET UP KIT INCLUDES...an S&S Super Stock cylinder head kit with valves and springsinstalled, manifold with o-rings and flanges, requiredhardware, top end gaskets, an S&S 561 cam, adjustablechrome moly pushrods, an HL 2T kit, a Super E carb kit, andinstallation instructions.Pistons of the required oversize must be ordered separately.Pistons fitted to S&S cylinders are also available. See below.This kit requires special S&S pistons.Order the required piston oversize from this chart.The 80 FLSS Hot Set Up Kit® boosted this stock 80” engine from 51.8hp to 83.0 hp. Dyno results from Dynojet® 150 Chassis dynamometerat S&S Cycle’s Research and Development facility in Viola, WI.S&S® 80FLSS HOT SET UP KITS®WITH SUPER STOCK® CYLINDER HEADSFor Stock Displacement Carbureted Harley-Davidson® Evolution® Big Twin EnginesModel YearKit NumberKit NumberBlackNatural1984-’92 90-0083 90-00811993-’99 90-0084 90-008292-2026 Series Pistons92-2026 SERIES PISTONS80" HOT SET UP KITS10:1 CompressionOversizePart NumberStandard 92-2026+.005 92-20265+.010 92-2027+.020 92-2028+.030 92-2029Cylinder & Piston Kit - Natural 91-7213Cylinder & Piston Kit - Black 91-771326 Hot Set Up KitsEmail us at sscust@sscycle.com