Primary
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Out of stock
PSR - Manual Primary Chain Tensioner fits '07-'16 Touring Models
PSR
$222.95PSR - Manual Primary Chain Tensioner fits '07-'16 Touring Models PSR's Manual Primary Chain Tensioner is precision-machined from billet aluminum. It helps with over-tightening and is easy to adjust. Features Heavy-duty manual tensioner Mounts with...$222.95 -
Out of stock
Thrashin Supply Billet Derby Cover fits Harley M8 Softail Models
Thrashin Supply
$129.95Thrashin Supply Billet Derby Cover fits Harley M8 Softail Models Uses Stock Gasket and hardware Made in Los Angeles, CA 2018 non-FLSB models require an equipped narrow profile primary cover for use Fitment: Fits '18-later FLSB and '19-later...$129.95 -
Out of stock
Drag Specialties - Manual Primary Chain Adjuster fits '07-'16 Touring, '09-'16 H-D FL Trike, '07-'17 Softail & '06-'17 Dyna Models
Drag Specialties
$192.73Drag Specialties - Manual Primary Chain Adjuster fits '07-'16 Touring, '09-'16 H-D FL Trike, '07-'17 Softail & '06-'17 Dyna Models The Manual Primary Chain Adjuster allows for the proper adjustment of the primary chain to the factory requirements of...$192.73 -
Out of stock
Thrashin' Supply - OG Five-Hole Derby Covers fits '16 & Up Touring Models
Thrashin Supply
$169.95Thrashin' Supply - OG Five-Hole Derby Covers fits '16 & Up Touring Models Thrashin' Supply's Five-Hole Derby Covers are built from 6061 billet aluminum and utilize stock gasket and hardware. Available in your choice of black anodized finish...$169.95 -
Out of stock
James Gaskets - Inspection-Clutch Derby Cover Gasket Kit - fits '70-'98 Big Twin
James Gaskets
$28.95James Gaskets Gasket Kits use state of the art materials and production methods to make the best gaskets available. Made in the USA Fitment: '70-'98 Big Twin Models$28.95 -
Out of stock
V-Twin - 43-1002 - Primary Drive Assembly Kit
V-Twin
$1,881.20V-Twin - 43-1002 - Primary Drive Assembly KitDescriptionPrimary drive assembly kit includes clutch kit, chain, chrome inner and outer primary covers with all bushings, seals, spacers, gaskets, and mount screws including the starter jack shaft assembly...$1,881.20 -
Out of stock
V-Twin - 43-1000 - Primary Drive Assembly Kit
V-Twin Manufacturing
$1,401.86V-Twin - 43-1000 - Primary Drive Assembly KitDescriptionPrimary drive assembly kit includes clutch kit, chain, chrome inner and outer primary covers with all bushings, seals, spacers, gaskets, and mount screws including the starter jack shaft assembly...$1,401.86 -
Out of stock
V-Twin - 42-1642 - WR 45 inch Primary Cover Raw
V-Twin
$214.20V-Twin - 42-1642 - WR 45 inch Primary Cover RawDescriptionWR 45" Raw primary cover features a thin profile for the racing model.For use with the shorter clutch pack. Fits:RL 1932-1939Additional Information UOM1 - EA ManufacturerV-Twin OriginImported ...$214.20 -
Out of stock
V-Twin - 2521-4T - Inner Primary Mount Kit
V-Twin
$29.04V-Twin - 2521-4T - Inner Primary Mount KitDescriptionChain guard inner primary cover mount kit includes screw plugs and washers. Fits:WL 1939-1952G 1939-1973Additional Information OEM No.60648-39 UOM1 - KIT ManufacturerV-Twin OriginImported$29.04 -
Out of stock
V-Twin - 20-2052 - Belt Drive Outboard Support Kit Chrome with Hardware
York
$749.91V-Twin - 20-2052 - Belt Drive Outboard Support Kit Chrome with HardwareDescriptionOutboard support kit for 3" BDL and York belt drive units includes the hardware. Fits:Custom application for 3" BDL & York unitsAdditional Information UOM1 - KIT ...$749.91 -
Out of stock
V-Twin - 20-0902 - BDL 8mm Belt Drive Front Pulley
Belt Drive LTD.
$289.05V-Twin - 20-0902 - BDL 8mm Belt Drive Front PulleyDescriptionBDL 8mm belt drive 45 tooth front pulley. Fits:Replacement application for BDL belt driveAdditional Information UOM1 - EA ManufacturerBelt Drive LTD. OriginUSA Size8 mm 2025 Catalog...$289.05 -
Out of stock
V-Twin - 20-0507 - Primo Belt Drive Starter Ring Gear
Rivera-Primo Products
$117.54V-Twin - 20-0507 - Primo Belt Drive Starter Ring GearDescriptionGear has 3 holes for mounting with rivets.Fits a 66 tooth early pulley. Fits:Replacement application for Brute II belt driveAdditional Information UOM1 - EA ManufacturerRivera-Primo...$117.54 -
Out of stock
V-Twin - 19-1283 - Engine Sprocket Kit 24 Tooth
V-Twin
$58.23V-Twin - 19-1283 - Engine Sprocket Kit 24 ToothDescription24 tooth engine sprocket kit includes sprocket with key and nut.45" motor sprocket suggest hand lap to sprocket shaft for an improved taper fit. Fits:WL 1929-1952G 1929-1973Additional Information ...$58.23 -
Out of stock
V-Twin - 19-0592 - Engine Sprocket Kit 25 Tooth
V-Twin
$58.23V-Twin - 19-0592 - Engine Sprocket Kit 25 ToothDescription25 tooth engine sprocket kit includes sprocket with key and nut.25 tooth 45" motor sprocket suggest hand lap to sprocket shaft for an improved taper fit. *NOTE: 25 tooth is ideal for most...$58.23 -
Out of stock
V-Twin - 19-0588 - 82 Link York Primary Chain
York
$123.66V-Twin - 19-0588 - 82 Link York Primary ChainDescriptionYork primary chain features a raw finish with a master link and hour glass shaped links. The size of the chain is 428 x 2 x 82. Fits:FL 1941-1964EL 1936-1952Additional Information UOM1 - EA ...$123.66 -
Out of stock
V-Twin - 19-0473 - 10 Foot Block Chain
V-Twin
$199.91V-Twin - 19-0473 - 10 Foot Block ChainDescription10 foot long block chain without rollers with Pitch size of 1/4 x 1". Fits:Custom applicationAdditional Information UOM1 - EA ManufacturerV-Twin OriginImported$199.91 -
Out of stock
V-Twin - 19-0459 - Primary Chain Master Link
York
$34.42V-Twin - 19-0459 - Primary Chain Master LinkDescriptionMaster link 35 x 2 primary chain, 7.8MM between two posts. For use on York brand primary chains only. Fits:WL 1929-1952G 1929-1973Additional Information OEM No.40097-29 UOM1 - EA ManufacturerYork ...$34.42 -
Out of stock
V-Twin - 18-0117 - 82 Link Primary Chain Drive System
V-Twin
$514.18V-Twin - 18-0117 - 82 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 82 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly...$514.18 -
Out of stock
V-Twin - 18-0114 - 76 Link Primary Chain Drive System
V-Twin
$1,159.90V-Twin - 18-0114 - 76 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 76 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly.Primary...$1,159.90 -
Out of stock
V-Twin - 18-0113 - 76 Link Primary Chain Drive System
V-Twin
$1,176.12V-Twin - 18-0113 - 76 Link Primary Chain Drive SystemDescriptionPtimary chain drive system is 76 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly.Primary...$1,176.12 -
Out of stock
V-Twin - 18-0112 - 76 Link Primary Chain Drive System
V-Twin
$1,146.54V-Twin - 18-0112 - 76 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 76 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly.Primary...$1,146.54 -
Out of stock
V-Twin - 18-0109 - 82 Link Primary Chain Drive System
York
$525.13V-Twin - 18-0109 - 82 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 82 link and includes clutch drum basket, steel and fiber clutch plates with pressure plate assembly.Features 5 stud clutch hub. Fits:UL 1937-1948FL 1941-1954EL...$525.13 -
Out of stock
V-Twin - 18-0108 - 82 Link Primary Chain Drive System
V-Twin
$586.80V-Twin - 18-0108 - 82 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 82 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly.Primary...$586.80 -
Out of stock
V-Twin - 18-0107 - 82 Link Primary Chain Drive System
V-Twin
$634.11V-Twin - 18-0107 - 82 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 82 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly, and 24...$634.11 -
Out of stock
V-Twin - 18-0103 - 82 Link Primary Chain Drive System
V-Twin
$1,255.88V-Twin - 18-0103 - 82 Link Primary Chain Drive SystemDescriptionPrimary chain drive system is 82 link and features chain shoe adjuster assembly, clutch drum basket with starter ring gear, steel and fiber clutch plates with pressure plate assembly.Primary...$1,255.88 -
Out of stock
Drag Specialties - 11200449 - Primary Tensioner Kit - '07-'17 Twin Cam, '06 Dyna
Drag Specialties
$184.57Drag Specialties - 11200449 - Primary Tensioner Kit - '07-'17 Twin Cam, '06 DynaFeaturesAuto-adjust style kitUsed for updating an old adjuster system or when building a new bike from the ground upKit includes adjuster plate, bolts, shoe, brackets and...$184.57 -
Out of stock
Drag Specialties - 11200445 - Primary Tensioner Kit - M8
Drag Specialties
$184.57Drag Specialties - 11200445 - Primary Tensioner Kit - M8FeaturesAuto-adjust style kitUsed for updating an old adjuster system or when building a new bike from the ground upKit includes adjuster plate, bolts, shoe, brackets and hardwareSpecsRiding...$184.57 -
Out of stock
Drag Specialties - 11200404 - Compensator Kit
Drag Specialties
$423.25Drag Specialties - 11200404 - Compensator KitFeaturesDesigned to handle high torque and horsepower in high-performance engine applicationsIncreased travel helps protect the motor and drivetrain from the harsh shock of full throttle launchesKit features a...$423.25 -
Out of stock
Drag Specialties - 11200352 - Primary Chain Adjuster - '04-'22 XL
Drag Specialties
$60.13Drag Specialties - 11200352 - Primary Chain Adjuster - '04-'22 XLFeaturesIncludes bracket shoe and retaining clipZinc platedReplaces OEM adjusterReplacement Part for OEM Number(s):4003902C,7804SpecsMaterialSteelColor/FinishZincRiding...$60.13 -
Drag Specialties - 11200077 - Primary Drive Kit
Drag Specialties
$500.77Drag Specialties - 11200077 - Primary Drive KitFeaturesKit includes compensating sprocket assembly, chain adjuster assembly and complete clutch assembly with aramid friction platesPrimary chains sold separatelySpecsTooth Count36Riding...$500.77 -
Out of stock
Drag Specialties - 11200079 - Primary Tension Shoe - '01-'06 Big Twin
Drag Specialties
$16.27Drag Specialties - 11200079 - Primary Tension Shoe - '01-'06 Big TwinFeaturesReplaces stock nylon shoeReplacement Part for OEM Number(s):3997601SpecsUnitsEachRiding StyleStreetProduct NameAdjusting ShoeTypePrimary ChainFitment2005 Harley-Davidson 15th...$16.27 -
Out of stock
Drag Specialties - 11070339 - Primary Plug - 5/16"-18
Drag Specialties
$20.35Drag Specialties - 11070339 - Primary Plug - 5/16"-18FeaturesZinc finishReplacement Part for OEM Number(s):6039104SpecsRiding StyleStreetColor/FinishZincProduct NameDrain PlugUnitsEach$20.35 -
Out of stock
Drag Specialties - 11070326 - Primary Plug - 1/8 NPT"
Drag Specialties
$17.29Drag Specialties - 11070326 - Primary Plug - 1/8 NPT"FeaturesZinc finishReplacement Part for OEM Number(s):739ASpecsColor/FinishZincProduct NameDrain PlugRiding StyleStreetUnitsEach$17.29 -
Out of stock
Drag Specialties - 09500960 - Tensioner - Primary - Twin Cam
Drag Specialties
$34.63Drag Specialties - 09500960 - Tensioner - Primary - Twin CamFeaturesHigh quality replacement componentsSold eachReplacement Part for OEM Number(s):3995499ASpecsTypePrimaryProduct NameTensionerUnitsEachRiding StyleStreetFitment2005 Harley-Davidson 15th...$34.63 -
Out of stock
Performance Machine (Pm) - 0034-1123M-B - Shift Primary Plug
Performance Machine (Pm)
$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 -
Out of stock
Hayden Enterprises Inc. - M6-SHOEXL4 - Replacement M6 Adjuster Shoe - '77-'90 XL
Hayden Enterprises Inc.
$22.95Hayden Enterprises Inc. - M6-SHOEXL4 - Replacement M6 Adjuster Shoe - '77-'90 XLFeaturesAutomatically adjust the tension of the primary chainProvide constant and even tension, which improves gear shiftingReduce shifting noise; make for a smoother...$22.95 -
Out of stock
Diamond - DMD-4282RV76NRI - Primary Chain - #428-2-76 - 5-Speed
Diamond
$180.95Diamond - 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...$180.95 -
Out of stock
Diamond - DMD-428-2RV-82NRI - Primary Chain - #428-2-82 - 4-Speed
Diamond
$194.95Diamond - 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...$194.95 -
Out of stock
Cometic - C10145F5 - Primary Gasket
Cometic
$141.70Cometic - C10145F5 - Primary GasketFeaturesHigh-quality products for long-term reliabilityManufactured from premium fuel-resistant materials that will not creep, crack or become brittleGaskets available in multiple types to best suit the intended...$141.70 -
Out of stock
Jims - 8385 Compensator Nut Retainer fits '12-'13 Twin Cam & Screamin’ Eagle Models (OEM #83935-09A, 40274-08A)
Jims
$260.95Jims - 8385 Compensator Nut Retainer fits '12-'13 Twin Cam & Screamin’ Eagle Models (OEM #83935-09A, 40274-08A) Features: Lockplate secures nut into sprocket retainer Incorporated lock tab One piece sprocket retainer for strength Made in...$260.95
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.