S&S Cycle - 34-4040 - Race Bearing Set - Big TwinFeaturesUsed to rebuild S&S and stock connecting rodsIncludes hardened steel rod bearing races and bronze wrist pin bushingsRequires finish sizing after installationMade in the U.S.A.Not for use on Twin...

S&S Cycle - 320-0598 - Flywheel AssemblyFeaturesMade of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6  large diameter tapered sprocket shaft that provides more contact area for increased...

S&S Cycle - 320-0477 - Flywheel - EvolutionFeaturesReplacement Flywheel Assemblies for Twin Cam MotorsS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are...

S&S Cycle - 320-0360 - Flywheel - Twin CamFeaturesReplacement Flywheel Assemblies for Twin Cam MotorsS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are...

S&S Cycle - 320-0350 - Flywheel - Twin CamFeaturesReplacement Flywheel Assemblies for Twin Cam MotorsS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are...

S&S Cycle - 320-0475 - Flywheel - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing conversionFits...

S&S Cycle - 320-0459 - Stroker Flywheel Kit - 106" - Twin CamFeaturesFeature three-piece assembled flywheels with shaftsDo not require any motor case modification4-1/2" stroke103" stock motors or motors with factory 95" kits require piston kit only;...

S&S Cycle - 320-0464 - Flywheel - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing conversionFits...

S&S Cycle - 32-2230 - Flywheel Assembly - Big TwinFeaturesMade of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6  large diameter tapered sprocket shaft that provides more contact area for...

S&S Cycle - 320-0351 - Flywheel - Stroker - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing...

S&S Cycle - 320-0352 - Flywheel - Stroker - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing...

S&S Cycle - 320-0402 - Flywheel - Stroker - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing...

S&S Cycle - 320-0460 - Stroker Flywheel Kit - 106" - Twin CamFeaturesFeature three-piece assembled flywheels with shaftsDo not require any motor case modification4-1/2" stroke103" stock motors or motors with factory 95" kits require piston kit only;...

S&S Cycle - 320-0403 - Flywheel Assembly - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing...

S&S Cycle - 320-0353 - Flywheel Assembly - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing...

S&S Cycle - 34-2103 - Crankpin - Big TwinFeaturesInclude crankpin, nuts and keyMade in the U.S.A.SpecsMaterialSteelProduct NameCrankpin AssemblyTypeOversizedUnitsEachRiding StyleStreetFitment1983 Harley-Davidson Disc Glide FXDG1984 Harley-Davidson Disc...

S&S Cycle - 310-1326 - Crankcase - MK-Series "B" - Black - M8 SoftailFeaturesStock deck heightLarge volume sumpMachined, close-fitting oil scraper (stock is as cast)A solid foundation for building a big-bore engineMade in the USAIncludes Manufacturers...

S&S Cycle - 32-2239 - Flywheel Assembly - Big TwinFeaturesMade of high-strength forged steel and designed for stock and high-performance custom applicationsSpecial keyed 6  large diameter tapered sprocket shaft that provides more contact area for...

S&S Cycle - 320-0361 - Flywheel - Stroker - Twin CamFeaturesS&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpinFlywheel assemblies are designed for use with Timken bearing...

S&S Cycle - 33-2004 - Motor Sprocket Shaft Assembly - Big TwinFeaturesIncludes tapered shaft, nut and keysFor use with standard diameter bearingMade in the U.S.A.SpecsUnitsEachProduct NameSprocket Shaft AssemblyRiding StyleStreetFitment1970-1980...

S&S Cycle - 33-2027 - Pinion Shaft - Big TwinFeaturesFor use with standard bearing diameterMade in the U.S.A.SpecsMaterialSteelRiding StyleStreetProduct NamePinion Shaft AssemblyUnitsEachFitment1983 Harley-Davidson Disc Glide FXDG1984 Harley-Davidson...

S&S Cycle - 34-2102 - Crankpin - Big TwinFeaturesInclude crankpin, nuts and keyMade in the U.S.A.SpecsProduct NameCrankpin AssemblyTypeStandardRiding StyleStreetMaterialSteelUnitsEachFitment1983 Harley-Davidson Disc Glide FXDG1984 Harley-Davidson Disc...

S&S Cycle - 310-1170 - Engine Case - MK-Series - Performance Replacement - M8 TouringFeaturesStock deck heightLarge volume sumpFits stock touring frameDesigned to accept larger boresAccepts all OEM style componentsReinforced case prevents cracking in...

S&S Cycle - 31-0047 - Engine Case - +4.000" Bore - Special Application - Evolution Big TwinFeaturesDesigned for high performance engines with cylinder bores 4.000\Cam chest is moved outward 0.250" to allow crankcases to handle large cylinder bore...

Revolution Performance, Llc - RP301-600 - Piston Kit - Flat-Top - For 139" Monster Big Bore Cylinder Kit - 107" M8Featuresrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with...

Revolution Performance, Llc - RP301-111W - Piston Kit - Flat-Top - For 124" Monster Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons...

Revolution Performance, Llc - RP301-119WD - Piston Kit - Domed - For 117" Monster Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with...

Revolution Performance, Llc - RP301-119W - Piston Kit - Dished - For 117" Monster Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with...

Revolution Performance, Llc - RP301-116WD - Piston Kit - Domed - For 107" Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with skirt...

Revolution Performance, Llc - RP301-116W - Piston Kit - Flat-Top - For 107" Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with skirt...

Revolution Performance, Llc - RP301-105W - Piston Kit - Flat-Top - For 98" Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with skirt...

Revolution Performance, Llc - RP301-104W - Piston Kit - Domed - For 98" Big Bore Cylinder Kit - Twin CamFeaturesrevolution performance logoTop-quality custom-forged piston kits manufactured with high-strength aluminum alloyInclude pistons with skirt...

S&S Cycle - 920-0115 - High Compression Piston Kit - +0.010" - 110" Twin Cam CVO MotorFeaturesDeck height is 1.0985"Wristpin diameter is .927"Piston features a 12.5cc raised dome to achieve a compression ratio of 10.6:1Not for twin cooled or '17 touring...

S&S Cycle - 920-0100 - Big Bore Forged Piston Kit - 3.937" Bore - 107" Twin Cam - StandardFeaturesPistons are compatible with stock rods with tapered wristpin endsStock cylinders may be bored to accommodate larger pistonBore cylinders to nominal diameter...

S&S Cycle - 920-0101 - Big Bore Forged Piston Kit - 3.937" Bore - 98" Twin Cam - StandardFeaturesPistons are compatible with stock rods with tapered wristpin endsStock cylinders may be bored to accommodate larger pistonBore cylinders to nominal diameter...

S&S Cycle - 920-0114 - High Compression Piston Kit - Standard - 110" Twin Cam CVO MotorFeaturesDeck height is 1.0985"Wristpin diameter is .927"Piston features a 12.5cc raised dome to achieve a compression ratio of 10.6:1Not for twin cooled or '17 touring...

S&S Cycle - 106-5555 - Piston Kit - For 89" Stroker Kit - 3.500" - +0.010"FeaturesPiston kit includes forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacementMade in the U.S.ASpecsBore Size Imperial3.500''Product...

S&S Cycle - 106-5556 - Piston Kit - For 89" Stroker Kit - 3.500" - +0.020"FeaturesPiston kit includes forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacementMade in the U.S.ASpecsBore - Oversize+0,020''Bore Size...

S&S Cycle - 106-5554 - Piston Kit - For 89" Stroker Kit - 3.500" - StandardFeaturesPiston kit includes forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacementMade in the U.S.ASpecsBore Size Imperial3.500''UnitsKitBore -...

S&S Cycle - 92-20265 - Replacement Pistons with RingsFeaturesS&S heads give great performance, and work with additional upgradesKits are fully assembled, and include stainless steel valves and high-lift springs (up to .640 lift)Intake manifold, pistons...