Primary
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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 - 560-0241 - 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-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 -
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-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-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 Machine
$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 - C9307F5 - Primary Gasket
Cometic
$45.10Cometic - C9307F5 - 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...$45.10 -
Cometic - C10145F1 - Primary Gasket
Cometic
$33.55Cometic - C10145F1 - 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...$33.55 -
Cometic - C10211 - Primary Gasket - M8
Cometic
$33.55Cometic - C10211 - Primary Gasket - M8FeaturesCometic'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...$33.55 -
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 -
Cometic - C9145F1 - Primary Gasket
Cometic
$46.15Cometic - C9145F1 - 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...$46.15 -
Cometic - C9889 - Primary Gasket Kit
Cometic
$101.80Cometic - C9889 - Primary Gasket KitFeaturesCometic'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...$101.80 -
Cometic - C9887 - Primary Gasket Kit
Cometic
$101.80Cometic - C9887 - Primary Gasket KitFeaturesCometic'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...$101.80 -
Belt Drives Ltd. - 76-47-2S - 8mm/2" Primary Belt Drive - Kick Start - Spline Shaft - '55-'84
Belt Drives Ltd.
$651.95Belt Drives Ltd. - 76-47-2S - 8mm/2" Primary Belt Drive - Kick Start - Spline Shaft - '55-'84 Features All 8mm kits come with belt, clutch basket, front pulley, nut and washer Pulley and clutch basket are hard anodized aluminum; front pulley is...$651.95 -
Belt Drives Ltd. - 62-39SK-2 - 8mm/1.5" Primary Belt Drive - Kick Start - '55-'64
Belt Drives Ltd.
$627.95Belt Drives Ltd. - 62-39SK-2 - 8mm/1.5" Primary Belt Drive - Kick Start - '55-'64 Features All 8mm kits come with belt, clutch basket, front pulley, nut and washer Pulley and clutch basket are hard anodized aluminum; front pulley is drilled and...$627.95 -
Belt Drives Ltd. - 62-39TK-1 - 8mm/1.5" Primary Belt Drive - Kick Start - '36-'54
Belt Drives Ltd.
$627.95Belt Drives Ltd. - 62-39TK-1 - 8mm/1.5" Primary Belt Drive - Kick Start - '36-'54 Features All 8mm kits come with belt, clutch basket, front pulley, nut and washer Pulley and clutch basket are hard anodized aluminum; front pulley is drilled and...$627.95 -
Belt Drives Ltd. - 61-41SE-1 - 8mm Primary Belt Drive - Electric Start - '65-'78
Belt Drives Ltd.
$730.95Belt Drives Ltd. - 61-41SE-1 - 8mm Primary Belt Drive - Electric Start - '65-'78 Features All 8mm kits come with belt, clutch basket, front pulley, nut and washer Pulley and clutch basket are hard anodized aluminum; front pulley is drilled and...$730.95 -
Belt Drives Ltd. - 61-41SE-2 - 8mm Primary Belt Drive - Electric Start - '79-'84
Belt Drives Ltd.
$730.95Belt Drives Ltd. - 61-41SE-2 - 8mm Primary Belt Drive - Electric Start - '79-'84 Features All 8mm kits come with belt, clutch basket, front pulley, nut and washer Pulley and clutch basket are hard anodized aluminum; front pulley is drilled and...$730.95 -
Belt Drives Ltd. - CD-1-90 - Primary Drive System - Electric Start - Dyna/Softail
Belt Drives Ltd.
$1,208.95Belt Drives Ltd. - CD-1-90 - Primary Drive System - Electric Start - Dyna/Softail Features Kit includes primary chain, front sprocket and nut, chain adjuster, clutch basket and clutch assembly with aramid plates Feature new-style clutch that...$1,208.95 -
Belt Drives Ltd. - CD-1-70 - Primary Drive System - Electric Start
Belt Drives Ltd.
$1,208.95Belt Drives Ltd. - CD-1-70 - Primary Drive System - Electric Start Features Kit includes primary chain, front sprocket and nut, chain adjuster, clutch basket and clutch assembly with aramid plates Feature new-style clutch that eliminates grabbing...$1,208.95 -
Belt Drives Ltd. - PS-1000 - Inner Primary Spacer
Belt Drives Ltd.
$98.95Belt Drives Ltd. - PS-1000 - Inner Primary Spacer Features Fit between the inner primary and motor Used with fat tire/wide frame applications Polished finish Made in the U.S.A. Specs Color/Finish Polished Riding...$98.95 -
Belt Drives Ltd. - PS-750 - Inner Primary Spacer
Belt Drives Ltd.
$79.95Belt Drives Ltd. - PS-750 - Inner Primary Spacer Features Fit between the inner primary and motor Used with fat tire/wide frame applications Polished finish Made in the U.S.A. Specs Units Each Color/Finish Polished Riding...$79.95 -
Belt Drives Ltd. - CDBCS-1-90 - Primary Drive with Lockup
Belt Drives Ltd.
$1,344.95Belt Drives Ltd. - CDBCS-1-90 - Primary Drive with Lockup Features Complete chain drive kit featuring BDL's ball-bearing lockup clutch for riders who want a lighter, easier to operate clutch Provides approximately 60% more surface contact area than...$1,344.95 -
Belt Drives Ltd. - CS-34A - Compensator Sprocket - 34 Tooth - '07-'25 Big Twin
Belt Drives Ltd.
$302.95Belt Drives Ltd. - CS-34A - Compensator Sprocket - 34 Tooth - '07-'25 Big Twin Features Three-piece patented design with no spring Weighs less than the stock sprocket Made in the U.S.A. Specs Riding...$302.95 -
Baker Drivetrain - PRK-FL-M8 - Primary Rebuild Kit - M8 Touring
Baker Drivetrain
$149.00Baker Drivetrain - PRK-FL-M8 - Primary Rebuild Kit - M8 TouringFeaturesA convenient all-inclusive primary gasket and seal kit for anytime the primary case is removedIncludes gaskets, seals and O-ringsMade in the U.S.A.SpecsProduct NameRebuild...$149.00 -
Baker Drivetrain - PRK-ST-M8 - Primary Rebuild Kit - M8 Softail
Baker Drivetrain
$149.00Baker Drivetrain - PRK-ST-M8 - Primary Rebuild Kit - M8 SoftailFeaturesA convenient all-inclusive primary gasket and seal kit for anytime the primary case is removedIncludes gaskets, seals and O-ringsMade in the U.S.A.SpecsProduct NameRebuild...$149.00 -
Baker Drivetrain - PRK-FL - Primary Rebuild Kit - '94-'06 Touring
Baker Drivetrain
$119.00Baker Drivetrain - PRK-FL - Primary Rebuild Kit - '94-'06 TouringFeaturesA convenient all-inclusive primary gasket and seal kit for anytime the primary case is removedIncludes gaskets, seals and O-ringsMade in the U.S.A.SpecsProduct NameRebuild KitRiding...$119.00 -
Baker Drivetrain - PRK-FXST - Primary Rebuild Kit - '94-'06 Softail, '94-'05 Dyna
Baker Drivetrain
$119.00Baker Drivetrain - PRK-FXST - Primary Rebuild Kit - '94-'06 Softail, '94-'05 DynaFeaturesA convenient all-inclusive primary gasket and seal kit for anytime the primary case is removedIncludes gaskets, seals and O-ringsMade in the U.S.A.SpecsProduct...$119.00 -
Baker Drivetrain - PRK-FL-2 - Primary Rebuild Kit - '07-'16 Touring
Baker Drivetrain
$119.00Baker Drivetrain - PRK-FL-2 - Primary Rebuild Kit - '07-'16 TouringFeaturesA convenient all-inclusive primary gasket and seal kit for anytime the primary case is removedIncludes gaskets, seals and O-ringsMade in the U.S.A.SpecsProduct NameRebuild...$119.00
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.