Primary
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Drag Specialties - 20173462 - Compensating Sprocket Nut - '70-'90
Drag Specialties
$19.71Drag Specialties - 20173462 - Compensating Sprocket Nut - '70-'90 Features temp Replacement compensating nut for a smoother ride Replacement Part for OEM Number(s):4039271 Specs Product Name Nut Type Compensating...$19.71 -
Drag Specialties - 11320005 - Inner Primary Bearing - '85-'06 Twin Cam
Drag Specialties
$97.80Drag Specialties - 11320005 - Inner Primary Bearing - '85-'06 Twin CamFeaturesHigh-quality roller bearing comes with two retainer ringsFits OEM and most aftermarket aluminum inner primariesReplacement Part for OEM Number(s):6067885,9135SpecsProduct...$97.80 -
Drag Specialties - 11200305 - Inner Primary Bearing Race
Drag Specialties
$11.28Drag Specialties - 11200305 - Inner Primary Bearing RaceFeaturesFits most OEM and most aftermarket inner primariesReplacement Part for OEM Number(s):3409106SpecsTypeMainshaftUnitsEachRiding StyleStreetProduct NameBearingFitment2007 Harley-Davidson FLHR...$11.28 -
Drag Specialties - 11200352 - Primary Chain Adjuster - '04-'22 XL
Drag Specialties
$60.72Drag Specialties - 11200352 - Primary Chain Adjuster - '04-'22 XLFeaturesIncludes bracket shoe and retaining clipZinc platedReplaces OEM adjusterReplacement Part for OEM Number(s):4003902C,7804SpecsMaterialSteelColor/FinishZincRiding...$60.72 -
Drag Specialties - 11200304 - Compensator Sprocket
Drag Specialties
$214.19Drag Specialties - 11200304 - Compensator SprocketFeatures34-toothHigh-quality steel constructionReplacement Part for OEM Number(s):4029606ASpecsRiding StyleStreetUnitsEachTypeCompensatingMaterialSteelProduct NameSprocketColor/FinishRawTooth...$214.19 -
Drag Specialties - 11200177 - Inner Primary Bearing
Drag Specialties
$12.31Drag Specialties - 11200177 - Inner Primary BearingFeaturesSealed ball bearing fits into aluminum inner primary covers to support transmission mainshaftSpecsProduct NameBearingMaterialAluminumRiding StyleStreetUnitsEachColor/FinishChromeTypeInner Primary...$12.31 -
Drag Specialties - 11200160 - Primary Tensioner Kit - '01-'06 Twin Cam
Drag Specialties
$91.62Drag Specialties - 11200160 - Primary Tensioner Kit - '01-'06 Twin CamFeaturesUsed for updating an old adjuster system or when building a new bike from the ground upComplete kit includes washers, adjuster plate, bolts, shoe, adjuster and nutReplacement...$91.62 -
Drag Specialties - 11200078 - Primary Drive Kit
Drag Specialties
$531.43Drag Specialties - 11200078 - Primary Drive KitFeaturesKit includes compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction platesPrimary chains sold separatelySpecsTooth Count37UnitsKitProduct...$531.43 -
Drag Specialties - 11070340 - Primary Plug - 1/2"-20
Drag Specialties
$19.52Drag Specialties - 11070340 - Primary Plug - 1/2"-20FeaturesZinc finishReplacement Part for OEM Number(s):6032898BSpecsProduct NameDrain PlugRiding StyleStreetColor/FinishZincUnitsEach$19.52 -
Drag Specialties - 11070339 - Primary Plug - 5/16"-18
Drag Specialties
$20.55Drag Specialties - 11070339 - Primary Plug - 5/16"-18FeaturesZinc finishReplacement Part for OEM Number(s):6039104SpecsRiding StyleStreetColor/FinishZincProduct NameDrain PlugUnitsEach$20.55 -
Drag Specialties - 11070326 - Primary Plug - 1/8 NPT"
Drag Specialties
$17.46Drag Specialties - 11070326 - Primary Plug - 1/8 NPT"FeaturesZinc finishReplacement Part for OEM Number(s):739ASpecsColor/FinishZincProduct NameDrain PlugRiding StyleStreetUnitsEach$17.46 -
Drag Specialties - 11070045 - Inner Primary Cover - '94-'06 Softail
Drag Specialties
$410.92Drag Specialties - 11070045 - Inner Primary Cover - '94-'06 SoftailFeaturesRugged, die-cast aluminum construction with a chrome-plated finishStarter shaft bushing included; seals and other components must be ordered separately to complete...$410.92 -
Drag Specialties - 11070038 - Inner Primary Cover
Drag Specialties
$375.90Drag Specialties - 11070038 - Inner Primary CoverFeaturesRugged, die-cast aluminum construction with a chrome-plated finishStarter shaft bushing included; seals and other components must be ordered separately to complete installationAccept all OEM...$375.90 -
Performance Machine (Pm) - 0034-1123M-B - Shift Primary Plug
Performance Machine
$27.95Performance Machine (Pm) - 0034-1123M-B - Shift Primary PlugFeaturesPlugs the opening on the primary case when switching to Performance Machine mid controlsDesigned for use on M-Eight Softail models without floorboardsClean, finished look that adds style...$27.95 -
Belt Drives Ltd. - BDL-138-175 - Primary Belt - Primo
Belt Drives Ltd.
$154.95Belt Drives Ltd. - BDL-138-175 - Primary Belt - Primo Features Specs Product Name Belt Units Each Riding Style Street Tooth Count 138 Type Primary Width Imperial 1-3/4'' Material Aramid Fiber$154.95 -
Baker Drivetrain - DD6-178 - Primary Adjuster Shoe
Baker Drivetrain
$49.00Baker Drivetrain - DD6-178 - Primary Adjuster Shoe Features Replacement shoe for BAKER DD6 transmission applications Made in the U.S.A. Specs Model Fat Shoe Product Name Adjusting Shoe Riding Style Street Type Primary...$49.00 -
Belt Drives Ltd. - BDC-4C - 3" Primary Belt Cover
Belt Drives Ltd.
$687.95Belt Drives Ltd. - BDC-4C - 3" Primary Belt CoverFeaturesBillet aluminum construction with a chrome-plated finishStyled to match Belt Drives' popular Top Fuel belt drive coverFits 3" open BDL belt drive systems with 3-1/2" x 4" motor plate bolt...$687.95 -
Belt Drives Ltd. - TFBSB-100 - Bearing
Belt Drives Ltd.
$28.95Belt Drives Ltd. - TFBSB-100 - Bearing Features For use on BDL Belt Drive clutches Specs Units Pair Product Name Outboard Bearing Riding Style Street$28.95 -
S&S Cycle - 560-0360 - Heavy Duty Compensator Ramp - Gray - M8
S&S Cycle
$349.95S&S Cycle - 560-0360 - Heavy Duty Compensator Ramp - Gray - M8FeaturesDirect replacement for M8 model bikesCNC machined 9000 series steelHeat-treated and coated for superior strength and corrosion resistanceMade in the USASpecsProduct NameCompensator...$349.95 -
S&S Cycle - 560-0241 - Inner Primary Bearing Race
S&S Cycle
$82.95S&S Cycle - 560-0241 - Inner Primary Bearing RaceFeaturesEliminates bearing race movement that can cause costly damage to transmission seal and output bearingA must for high-performance applicationsMade in the U.S.A.SpecsProduct NameBearing...$82.95 -
S&S Cycle - 56-5089 - Inner Primary Bearing Race
S&S Cycle
$81.95S&S Cycle - 56-5089 - Inner Primary Bearing RaceFeaturesEliminates bearing race movement that can cause costly damage to transmission seal and output bearingA must for high-performance applicationsMade in the U.S.A.SpecsUnitsEachProduct NameBearing...$81.95 -
James Gasket - JGI-34901-85-K - Primary Gasket Kit
James Gaskets
$67.95James Gasket - JGI-34901-85-K - Primary Gasket KitFeaturesTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in the USASpecsMaterialPaperProduct NameGasket KitThickness Imperial0...$67.95 -
James Gasket - JGI-7402 - Inner Primary Lock Tabs
James Gaskets
$1.95James Gasket - JGI-7402 - Inner Primary Lock TabsFeaturesLock-tabs designed for use on inner primary boltsMade in the U.S.A.Replacement Part for OEM Number(s): 7402SpecsUnitsEachProduct NameLock TabRiding StyleStreetTypeInner PrimaryFitment1984...$1.95 -
James Gasket - JGI-25352-00-F - Primary Gasket - Buell
James Gaskets
$40.95James Gasket - JGI-25352-00-F - Primary Gasket - BuellFeaturesTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in the USAReplacement Part for OEM Number(s): 2535200SpecsTypePrimary...$40.95 -
James Gasket - JGI-34901-94-KF - Primary Gasket
James Gaskets
$98.95James Gasket - JGI-34901-94-KF - Primary GasketFeaturesTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in the USASpecsFeaturesBeadedMaterialSiliconeTypePrimary CoverProduct NameGasket...$98.95 -
James Gasket - JGI-25352-00-KF - Primary Gasket - Buell
James Gaskets
$52.95James Gasket - JGI-25352-00-KF - Primary Gasket - BuellFeaturesTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in the USASpecsFeaturesBeadedMaterialFoamet®Product NameGasket KitRiding...$52.95 -
James Gasket - JGI-60547-06-K - Primary Cover Gasket Kit - Dyna/Softail
James Gaskets
$75.95James Gasket - JGI-60547-06-K - Primary Cover Gasket Kit - Dyna/SoftailFeaturesTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in the USASpecsThickness Metric0.79 mmUnitsKitRiding...$75.95 -
James Gasket - JGI-34901-05-K - Primary Cover Gasket Kit
James Gaskets
$75.95James Gasket - JGI-34901-05-K - Primary Cover Gasket KitFeaturesTop quality gaskets, seals and O-rings meet or exceed OEM specificationsPrimary gasket features silicone beadingMade in the USASpecsMaterialSiliconeThickness Metric1.60 mmProduct NameGasket...$75.95 -
Eastern Motorcycle Parts - A-33318-85 - Lock Tabs - Inner Primary
Eastern Motorcycle Parts
$2.95Eastern Motorcycle Parts - A-33318-85 - Lock Tabs - Inner PrimaryFeaturesReplacement lock tab washersReplacement Part for OEM Number(s): 3331885SpecsProduct NameLock TabRiding StyleStreetTypeInner PrimaryUnits10 PackFitment2005 Harley-Davidson 15th...$2.95 -
Diamond - DMD-4282RV76NRI - Primary Chain - #428-2-76 - 5-Speed
Diamond
$188.95Diamond - DMD-4282RV76NRI - Primary Chain - #428-2-76 - 5-SpeedFeaturesEndless link Diamond primary chainMade in the U.S.A.Replacement Part for OEM Number(s): 4003779,4003779ASpecsNumber of Links76UnitsEachProduct NamePrimary ChainRiding...$188.95 -
Diamond - DMD-428-2RV-82NRI - Primary Chain - #428-2-82 - 4-Speed
Diamond
$202.95Diamond - DMD-428-2RV-82NRI - Primary Chain - #428-2-82 - 4-SpeedFeaturesEndless link Diamond primary chainMade in the U.S.A.Replacement Part for OEM Number(s): 4000736A,4000736BSpecsProduct NamePrimary ChainRiding StyleStreetNumber of...$202.95 -
Diamond - DMD-C35-3R94NRI - Primary Chain - #35-3-94
Diamond
$169.95Diamond - DMD-C35-3R94NRI - Primary Chain - #35-3-94FeaturesEndless link Diamond primary chainMade in the U.S.A.Replacement Part for OEM Number(s): 4000557A,4000557BSpecsRiding StyleStreetNumber of Links94Product NamePrimary...$169.95 -
Eastern Motorcycle Parts - A-60678-85 - Snap Rings - Inner Primary Cover
Eastern Motorcycle Parts
$1.95Eastern Motorcycle Parts - A-60678-85 - Snap Rings - Inner Primary CoverFeaturesHigh-quality OEM replacement componentsReplacement Part for OEM Number(s): 6067885SpecsColor/FinishRawRiding StyleStreetTypeInner Primary CoverUnits10 PackBase...$1.95 -
Eastern Motorcycle Parts - A-24003-55 - Engine Sprocket Nut
Eastern Motorcycle Parts
$12.95Eastern Motorcycle Parts - A-24003-55 - Engine Sprocket NutFeaturesMotor sprocket nut for belt-drive conversions and/or eliminating compensating sprocketsMade in the U.S.A.Replacement Part for OEM Number(s): 2400355SpecsRiding StyleStreetUnitsEachProduct...$12.95 -
Darkhorse Motor Company - DH-MCCR-K - Replacement Cushion Kit - Man O-War - With Compression Tool
Darkhorse Motor Company
$114.95Darkhorse Motor Company - DH-MCCR-K - Replacement Cushion Kit - Man O-War - With Compression ToolFeaturesReplacement Cushion Kit supplies all 8 cushions to rebuild Man O-War motorsprocket cushions when neededMade in the USAIf you do not have the tool...$114.95 -
Darkhorse Motor Company - DH-MCR-K - Replacement Cushion Kit - Man O-War
Darkhorse Motor Company
$49.95Darkhorse Motor Company - DH-MCR-K - Replacement Cushion Kit - Man O-WarFeaturesReplacement Cushion Kit supplies all 8 cushions to rebuild Man O-War motorsprocket cushions when neededMade in the USAIf you do not have the tool necessary to replace...$49.95 -
Diamond - DMD-4282RV86NRI - Primary Chain - 428-2 x 86
Diamond
$212.95Diamond - DMD-4282RV86NRI - Primary Chain - 428-2 x 86 Features Endless link Diamond primary chain Made in the U.S.A. Replacement Part for OEM Number(s): 4003707 Specs Riding Style Street Model Diamond Product Name Primary...$212.95 -
Colony - 7826-1 - Nut - Motor Sprocket - Big Twin
Colony
$19.95Colony - 7826-1 - Nut - Motor Sprocket - Big Twin Features Made in the U.S.A. Replacement Part for OEM Number(s): 2400355 Specs Application Motor Sprocket Base Color Silver Measurement System SAE Base...$19.95 -
Cometic - C9314F5 - Primary Gasket
Cometic
$29.35Cometic - C9314F5 - Primary GasketFeaturesCometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outsideGaskets have resistance to temperatures of...$29.35 -
Cometic - C9607F1 - Primary Gasket - Softail
Cometic
$45.10Cometic - C9607F1 - Primary Gasket - SoftailFeaturesCometic's proprietary AFM (Aluminum Foamette Material) gaskets feature an aluminum core with a chemically blown, compounded nitrile synthetic rubber bonded to the outsideGaskets have resistance to...$45.10
Harley Primary
Upgrade your Harley primary system with premium components designed for peak performance and durability. Found under our Clutch, Driveline & Transmission category, these parts are engineered to ensure smoother power delivery, reduced vibration, and more efficient drivetrain operation. Whether you're maintaining or upgrading, a strong Harley primary setup is key to getting the most out of your ride.
Our collection includes high-quality Harley primary covers, primary chains, compensator sprockets, clutch baskets, and both inner and outer primary components—all crafted from durable materials like forged steel and precision-machined aluminum. Built to handle aggressive riding and tough conditions, these parts meet or exceed OEM standards.
Don’t settle for less. Explore our full range of Harley primary parts and Harley primary covers today and feel the performance difference every time you hit the throttle.