1926-1984 Vintage Models - S&S Cycle

1926-1984 Vintage ModelsFlathead Power ® by S&S ®Forged 3-5/8" Bore Pistonsfor 1936-’84 OHV EnginesThis new forged 35/8" bore stroker piston replaces several cast and forged big borepistons that S&S previously offered. Applications for this piston include 88" (41/4"stroke), 93" (41/2" stroke), and 96" (45/8" stroke) engines with stock 81/2" diameterflywheels, and 98" (43/4" stroke) and 103" (5" stroke) engines with 81/4" smalldiameter flywheels. As with the new stock bore stroker piston, the modern metallurgyand advanced skirt profiles allow a relatively close piston fit for low engine noise andlong engine life.Fitment• 88", 93", 96", 98" and 103" engines for 1936-’84 OHV big twinsFeatures and benefits• Forged pistons for superior strength• Modern alloys and piston skirt profiles for low noise and long engine life• Dome volume 30ccOptions• Available in 35/8" Standard. +.010", .020", .030", and .060"oversizes• S&S will fit these pistons to your existing cylinders (when purchasing newcylinders, pistons can be fit to them as an option)106-5535S&S® Forged 35/8" Bore Piston Sets For 1936-’84 OHV Big TwinsOversizeWristpinDeck HeightPart No. Replacement RingsStandard (35/8") 1.260" 106-5535 94-1220X+.010" 1.260" 106-5536 94-1221X+.020" 1.260" 106-5537 94-1222X+.030" 1.260" 106-5538 94-1223X+.060" 1.260" 106-5789 94-1226XPERFORMANCEPARTSParts forTwin Cam 96 /103 2007-2012Parts forTwin Cam 88 ®1999-2006Parts forEvolution ®1984-1999Parts forSportster ® & Buell ®1986-2012Parts forVintage Engines1926-1984Parts forX-Wedge®2007-2012Kit Contents: (Sold In Sets Only)• Two pistons with wristpins & keepers• Piston rings• InstructionsRecommended Piston Fit Close: .003" - .0035" Loose: .004" - .005"Replacement PartsWristpin .791" diameter ................................. 106-6123Wristpin keeper, c-clip ..................................94-9254-SParts forVictory®, Off-road& MetricS&S® Flathead Power® 35/8" Bore Forged Piston Application ChartDisplacement Stroke Flywheel Diameter Compression RatioCylinder LengthSH-Series & P-Series Engines KN-Series Engines88" 41/4" 81/2" 7.5:1 5.330" –93" 41/2" 81/2" 8.5:1 5.405" 5.625"93" HC 41/2" 81/2" 9.1:1 5.363" –96" 45/8" 81/2" 9.1:1 5.440" –98" 43/4" 81/2" 8.9:1 5.530" –103" 5" 81/4" 9.7:1 5.630" –Note – piston deck height 1.260"NOTE:Compression ratios will change when replacing existing pistons in S&S engines with this series of forged pistons. If higher compression is desired, we suggest shortening cylinders, ordecking heads to achieve the desired compression ratio. A change of .060" will produce approximately 1 point of change in the compression ratio.S&S offers machine shop services through the S&S remanufacturing program. New pistons can be fit to your existing cylinders for a reasonable charge, and cylinders can be shortenedto your specifications if higher compression ratio is desired.RacingProductsTools & ShopSuppliesDealer Services& Promo ItemsWarranty &Company PolicyOEM Cross ReferenceAppendix & IndexVisit us at www.sscycle.com5-47