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Colony - 2-1/4" Socket-Head Belt Pulley Mounting Hardware Kit with Washers fits '00-'06 Softail, '00-'05 Dyna Models (OEM #3737)
Colony Machine
$32.95Colony - 2-1/4" Socket-Head Belt Pulley Mounting Hardware Kit with Washers fits '00-'06 Softail, '00-'05 Dyna Models (OEM #3737) Features: Brake rotor, sprocket and belt mounting kits Available to fit virtually all H-D brakes, chain and belt...$32.95 -
Colony - Primary Aluminum Acorn Hardware Kit fits '71-'86 Big Twin Models
Colony Machine
$47.95Colony - Primary Aluminum Acorn Hardware Kit fits '71-'86 Big Twin Models Features: Individual acorn bolt and nut sets for specific applications Made in the U.S.A. Fitment 1984-1985 Harley-Davidson Softail Standard...$47.95 -
Colony - 7811-14 Inner Primary Mounting Kit fits '36-'54 Big Twin Models (OEM #60544-36, 60640-29)
Colony Machine
$32.95Colony - 7811-14 Inner Primary Mounting Kit fits '36-'54 Big Twin Models (OEM #60544-36, 60640-29) Features: Attach OE style 3-hole inner primary covers to specific models Made in the U.S.A. Replacement Part for...$32.95 -
Colony - Acorn Front Belt Drive Pulley Nut fits '99-'06 Twin Cam Models
Colony Machine
$19.95Colony - Acorn Front Belt Drive Pulley Nut fits '99-'06 Twin Cam Models Features: Chrome front pulley nut for open primary belt drive applications Made in the U.S.A. Fitment 2006 Harley-Davidson Softail Heritage EFI...$19.95 -
Paughco - Outer Primary Cover fits '36-'54/'55-'64 Big Twin Models - Chrome
Paughco
$314.95Paughco - Outer Primary Cover fits '36-'54/'55-'64 Big Twin Models - Chrome Features: Made in the U.S.A. Fitment 1949-1954 Harley-Davidson Hydra Glide FL - - 1949-1954 Harley-Davidson Hydra Glide...$314.95 -
Paughco - 4-Speed Outer Primary Cover W/O Compensating Sprockets fits '36-'54 Big Twin Models (OEM #60505-36)
Paughco
$317.95Paughco - 4-Speed Outer Primary Cover W/O Compensating Sprockets fits '36-'54 Big Twin Models (OEM #60505-36) Features: Made in the U.S.A. Puaghco Mfg Part Number B750 Fitment 1949-1954 Harley-Davidson Hydra Glide...$317.95 -
Drag Specialties - XL Primary Cover fits '04-'05 Sportster Models (Repl. OEM #25460-04) - Chrome
Drag Specialties
$367.66Drag Specialties - XL Primary Cover fits '04-'05 Sportster Models (Repl. OEM #25460-04) - Chrome This cover features die-cast aluminum construction. Gaskets not included. Fitment 2005 Harley-Davidson 883 Low...$367.66 -
Drag Specialties - XL Primary Cover fits '04-'05 Sportster Models - Satin Black
Drag Specialties
$312.04Drag Specialties - XL Primary Cover fits '04-'05 Sportster Models - Satin Black This cover features die-cast aluminum construction. Gaskets not included. Fitment 2005 Harley-Davidson 883 Low XLL 2005 Harley-Davidson 883 Roadster...$312.04 -
Drag Specialties - XL Primary Cover fits '06-'22 Sportster Models (Exc. '21-'22 Sportster S/RH1250S & '22 Nightster RH975 Models) - Chrome (Repl. OEM #25460-06)
Drag Specialties
$412.98Drag Specialties - XL Primary Cover fits '06-'22 Sportster Models (Exc. '21-'22 Sportster S/RH1250S & '22 Nightster RH975 Models) - Chrome (Repl. OEM #25460-06) This cover features die-cast aluminum construction. Gaskets not included...$412.98 -
Performance Machine - Scallop Derby Cover fits '18-'20 Softail Models W/ Narrow Profile Primary Cover
Performance Machine
$191.95Performance Machine - Scallop Derby Cover fits '18-'20 Softail Models W/ Narrow Profile Primary Cover The Performance Machine Scallop Derby Cover features a machined Performance Machine logo and is available in three different finishes: Chrome, Contrast...$191.95 -
James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Silicone Bead fits '07-'16 Touring Models
James Gaskets
$75.95James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Silicone Bead fits '07-'16 Touring Models This kit features top-quality gaskets, seals and O-rings that meet or exceed OEM specifications. Features Primary gasket features silicone...$75.95 -
James Gaskets - Primary Gasket, Seal & O-Ring Kit fits '17-'23 Touring Models
James Gaskets
$59.95James Gaskets - Primary Gasket, Seal & O-Ring Kit fits '17-'23 Touring Models This kit features top-quality gaskets, seals and O-rings that meet or exceed OEM specifications. Features Primary gasket features silicone beading Made in the U.S.A...$59.95 -
Drag Specialties - Inner Primary Mainshaft Bearing/Seal Kit fits '89-'99 Evolution Big Twin & '99-'06 Big Twin Models (Exc. Dyna Glide Models)
Drag Specialties
$51.45Drag Specialties - Inner Primary Mainshaft Bearing/Seal Kit fits '89-'99 Evolution Big Twin & '99-'06 Big Twin Models (Exc. Dyna Glide Models) This kit comes with a pinion seal, a main shaft seal, bearing snap rings, an inner bearing race and a...$51.45 -
Performance Machine - Derby Covers fits '16-'21 Dressers, HD FL Trike & '15 FLHTCUL/FLHTKL Models
Performance Machine
$359.95Performance Machine - Derby Covers fits '16-'21 Dressers, HD FL Trike & '15 FLHTCUL/FLHTKL Models Performance Machine's Vision Derby Covers feature a special polycarbonate lens that give you a glimpse of the machine's inner workings! All Derby...$359.95 -
Drag Specialties - Chrome Outer Primary Covers fits Dyna/Softail Models (See Desc.)
Drag Specialties
$476.84Drag Specialties - Chrome Outer Primary Covers fits '06-'17 Dyna/Softail Models The Drag Specialties Chrome Outer Primary Cover is available in two different fitments. Part #1107-0324 fits '07-'17 Softail Models and is a replacement for OEM #60782-06,...$476.84 -
Drag Specialties - Aluminum Outer Primary Covers fits '07-'16 Touring Models
Drag Specialties
$463.45 - $472.72Drag Specialties - Aluminum Outer Primary Covers fits '07-'16 Touring Models The Drag Specialties Aluminum Outer Primary Cover is a replacement for OEM #60553-07A. It is available in your choice of a chrome or satin black finish. Features Die-cast...$463.45 - $472.72 -
Colony - 2144-1 Aluminum Primary Cover Filler Caps fits '54-'70 Sportster Models (OEM #34742-52A)
Colony Machine
$27.95Colony - 2144-1 Aluminum Primary Cover Filler Caps fits '54-'70 Sportster Models (OEM #34742-52A) Features Chrome or raw aluminum finish Made in the U.S.A. Fitment YearMakeModel 1958 - 1970 Harley-Davidson Sportster 900...$27.95 -
James Gaskets - Inspection-Clutch Derby Cover Gasket Kit - fits '85-'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: '85-'98 Big Twin Models$28.95 -
Out of stock
Drag Specialties - Derby Covers - Fits '99-'18 Big Twin (Except '16 Dressers, '15 FLHTCUL/FLHTKL)
Drag Specialties
$53.51 - $58.66Drag Specialties - Derby Covers These Domed Design Deby Covers have a clean simple look. Features Die-cast construction Available in multiple finishes Includes mounting hardware Fitment 2020 Harley-Davidson Softail Low Rider S...$53.51 - $58.66 -
Out of stock
Thrashin Supply Harley Twin Cam Derby Covers, Dished
Thrashin Supply
$139.95Thrashin Supply Co. Dished Derby Cover for Harley Twin Cam Models The Thrashin Supply Co. Dished Derby Cover is constructed from tough billet aluminum. Not only does this look super clean and sleek but it's durable so it'll last. Available in your...$139.95 -
Out of stock
Drag Specialties - Derby Covers - Fits '84-'98 Big Twin
Drag Specialties
$41.15 - $43.21Drag Specialties - Derby Covers These Domed Design Deby Covers have a clean simple look. Features Die-cast construction Available in multiple finishes Includes mounting hardware Fitment 1999 Harley-Davidson Softail Night Train...$41.15 - $43.21 -
Out of stock
Drag Specialties - Inspection Covers - fits '04-'18 XL
Drag Specialties
$25.70 - $48.36Drag Specialties Inspection Covers for Harley Sportster These Inspection Covers by Drag are available in Black or Chrome. Features: Machined from billet aluminum; includes gasket and hardware Multiple styles of finish...$25.70 - $48.36 -
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
Feuling Parts - 2035 - Compensator Spring - Replacement - M8/Twin Cam
Fueling Parts
$59.95Feuling Parts - 2035 - Compensator Spring - Replacement - M8/Twin Cam Features Thicker, stronger, and an increased bevel over stock Features a steeper bevel that provides more preload and pressure on the spring pack and compensator Helps diminish...$59.95 -
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
Jims - 5534 Compensator Bolt Driver Torx Socket fits '14-'21 Big Twin Models
Jims
$25.95Jims - 5534 Compensator Bolt Driver Torx Socket fits '14-'21 Big Twin Models Features: Correct-style driver/socket for the compensating sprocket retaining fastener Made in the USA For use with Jim's part# 10500031 compensator bolt...$25.95 -
Out of stock
Joker Machine - Sportster Inspection Cover - Finned, Chrome - Fits '04-'16 XL
Joker Machine
$47.95Customize your Sportster with the Joker Machine Finned Inspection Cover. Top-quality construction - CNC-milled out of 6061-T6 billet aluminum All custom mounting hardware is included Made in the U.S.A.$47.95 -
Out of stock
V-Twin - 43-1050 - Inner Primary Cover Chrome
Motorshop
$387.87V-Twin - 43-1050 - Inner Primary Cover ChromeDescriptionChrome inner primary cover only, for 5-speed.Cover includes 2" bolt hole spring at the transmission mount and a shifter shaft hole. Order bearing, bushing, and seal separately. Fits:FXD...$387.87 -
Out of stock
V-Twin - 43-1002 - Primary Drive Assembly Kit
V-Twin
$2,317.62V-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...$2,317.62 -
Out of stock
V-Twin - 43-1000 - Primary Drive Assembly Kit
V-Twin Manufacturing
$1,727.02V-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...$1,727.02 -
Out of stock
V-Twin - 43-0988 - Replica Inner Primary Cover
Motorshop
$492.33V-Twin - 43-0988 - Replica Inner Primary CoverDescriptionReplica inner primary cover features a natural cast aluminum finish and includes the transmission mainshaft bearing.*NOTE: Cast inner primary cover is slightly larger than the die cast replacements...$492.33 -
Out of stock
V-Twin - 43-0675 - Chrome FX Inner Primary Cover
V-Twin
$341.67V-Twin - 43-0675 - Chrome FX Inner Primary CoverDescriptionOne of our most popular items is this chrome inner primary cover with the hole for the mid shift control lever as OEM. It features a 9-hole pattern for the outer cover to bolt to. Includes sealed...$341.67 -
Out of stock
V-Twin - 43-0673 - Inner and Outer Primary Cover Set Chrome
V-Twin
$219.90V-Twin - 43-0673 - Inner and Outer Primary Cover Set ChromeDescriptionInner and outer primary cover set features a chrome finish.Bare chrome covers with cosmetic imperfections. *NOTE: Must order hardware, gaskets, bushings and mount screws separately. ...$219.90 -
Out of stock
V-Twin - 43-0562 - Vented Outer Primary Cover Kit
V-Twin
$267.04V-Twin - 43-0562 - Vented Outer Primary Cover KitDescriptionOuter primary cover kit include vented inspection and derby covers with screws.*Note: UPS may consider this part as packaged "oversize" for shipment, as compared to the actual weight, which will...$267.04 -
Out of stock
V-Twin - 43-0384 - Inner Primary Cover Cast
Motorshop
$567.11V-Twin - 43-0384 - Inner Primary Cover CastDescriptionInner primary cover features a natural cast finish that is machined as an exact replacement. Cover is for use with 4 speed models.This 9 hole cover is reinforced and stronger than the original. Inner...$567.11 -
Out of stock
V-Twin - 43-0354 - Polished Outer Primary Cover Kit
Motorshop
$247.16V-Twin - 43-0354 - Polished Outer Primary Cover KitDescriptionPolished outer primary cover kit includes primary cover with footboard tab, allen screws, outer cover starter bearing and gaskets for derby, inspection and outer cover.Cover is for FLH models...$247.16 -
Out of stock
V-Twin - 43-0352 - Natural Inner Primary Housing Assembly
Motorshop
$564.31V-Twin - 43-0352 - Natural Inner Primary Housing AssemblyDescriptionNatural inner primary housing assembly for 4-speed models includes inner cover with hole for mid-shift control lever, as OEM, bearing, seal, chain tensioner, detent plate, vent tube,...$564.31 -
Out of stock
V-Twin - 43-0349 - Chrome Outer Primary Cover Kit
V-Twin
$326.39V-Twin - 43-0349 - Chrome Outer Primary Cover KitDescriptionChrome 4-speed outer primary cover kit includes primary cover, allen screws,outer primary starter bearing and gasket for derby, inspection and outer cover.Cover is for FLH models with 9 hole...$326.39 -
Out of stock
V-Twin - 43-0348 - Chrome Outer Primary Cover
Motorshop
$275.44V-Twin - 43-0348 - Chrome Outer Primary CoverDescriptionChrome 4-speed outer primary cover is for FX with 9 holes.Order screws separately. Fits:FXWG 1983-1986FLHS-80 1983-1984FXB 1980-1984 with rear beltAdditional Information OEM No.60531-83B UOM1 - EA...$275.44 -
Out of stock
V-Twin - 43-0346 - Chrome Outer Primary Cover Kit
Motorshop
$290.04V-Twin - 43-0346 - Chrome Outer Primary Cover KitDescriptionChrome 5-speed outer primary cover kit includes primary cover, allen screws, starter bushing and gaskets for derby, inspection and outer cover.*Note: UPS may consider this part as packaged...$290.04
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.