Primary
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V-Twin - Outer Primary Gasket Kit fits '65-'81 FL, '71-'81 FX Models
V-Twin Manufacturing
$27.98V-Twin - Outer Primary Gasket Kit fits '65-'81 FL, '71-'81 FX Models Outer primary gasket kit includes one primary cover gasket, one derby cover gasket and one inspection plate gasket. Gaskets are not beaded Fitment: FL 1965-1981 FX 1971-1981$27.98 -
Motorshop - Chrome Narrow Profile Outer Primary Cover fits '07-'16 FLT Model (OEM #257003-85)
Motorshop
$313.43Motorshop - Chrome Narrow Profile Outer Primary Cover fits '07-'16 FLT Model (OEM #257003-85) This narrow profile primary cover is 1" narrower than the stock outer primary that will allow easier reach to the ground and is shaped to slim the bike profile...$313.43 -
Jims - 16-2320 M8 Primary Locking Tool fits '18-Up FLST/FXST Models
Jims
$59.90Jims - 16-2320 M8 Primary Locking Tool fits '18-Up FLST/FXST Models Jims primary locking tool is used to lock the primary for service work on M8 models. Fitment: FLST 2018-UP FXST 2018-UP$59.90 -
Colony - 7811-14 Inner Primary Mounting Kit fits '37-'48 UL, '41-'54 FL, '36-'40 EL Models
$38.36Colony - 7811-14 Inner Primary Mounting Kit fits '37-'48 UL, '41-'54 FL, '36-'40 EL Models Inner primary mount kit contains all hardware necessary to mount tin inner primary to engine. Fitment: UL 1937-1948 FL 1941-1954 EL 1936-1940$38.36 -
Colony - 7812-12 Inner Primary Mount Kit fits '55-'64 FL Model
$38.62Colony - 7812-12 Inner Primary Mount Kit fits '55-'64 FL Model Inner primary mount kit Fitment: FL 1955-1964$38.62 -
V-Twin - Polished Belt Drive Alternator Cover
V-Twin Manufacturing
$47.25V-Twin - Polished Belt Drive Alternator Cover Cover is designed to protect your alternator and helps cooling by acting as a heat sink. For use on all cone engines and is equipped with a mounting lug for the belt shroud built in. Fitment: Custom...$47.25 -
Colony - Inner Primary Mount Kit fits '94-'99 FXST/FLST Models (OEM #2818, 33318-85, 4086)
Colony Machine
$25.95Colony - Inner Primary Mount Kit fits '94-'99 FXST/FLST Models (OEM #2818, 33318-85, 4086) Features: Kits include all required hardware needed to install an inner primary Made in the U.S.A. Replacement Part for...$25.95 -
Colony - Inner Primary Mount Kit fits '86-'93 FXST/FLST Models (OEM #2818, 2871W, 33318-35)
Colony Machine
$25.95Colony - Inner Primary Mount Kit fits '86-'93 FXST/FLST Models (OEM #2818, 2871W, 33318-35) Features: Kits include all required hardware needed to install an inner primary Made in the U.S.A. Replacement Part for...$25.95 -
Colony - Inner Primary Mount Kit fits '86-'98 FLT Model (OEM #2818, 2871W, 33318-35)
Colony Machine
$25.95Colony - Inner Primary Mount Kit fits '86-'98 FLT Model (OEM #2818, 2871W, 33318-35) Features: Kits include all required hardware needed to install an inner primary Made in the U.S.A. Replacement Part for...$25.95 -
Colony - Inner Primary Mount Kit fits '80-'85 Big Twin 4-Speed Models (OEM #16830-54, 4021, 4722)
Colony Machine
$36.95Colony - Inner Primary Mount Kit fits '80-'85 Big Twin 4-Speed Models (OEM #16830-54, 4021, 4722) Features: Kits include all required hardware needed to install an inner primary Made in the U.S.A...$36.95 -
V-Twin - 24 Tooth Compensator Sprocket Kit fits '70-'84 FL, '71-'84 FX Model
V-Twin Manufacturing
$236.33V-Twin - 24 Tooth Compensator Sprocket Kit fits '70-'84 FL, '71-'84 FX Model Kit Includes: 24 tooth sprocket, retainer and cover assembly, a raw compensator sprocket cup, motor sprocket nut , a forged motor sprocket cam, and a sprocket shaft...$236.33 -
Colony - Inner Primary Mount Kit fits '70-'79 Big Twin 4-Speed Models (OEM #16830-54, 4017, 4021)
Colony Machine
$43.95Colony - Inner Primary Mount Kit fits '70-'79 Big Twin 4-Speed Models (OEM #16830-54, 4017, 4021) Features: Kits include all required hardware needed to install an inner primary Made in the U.S.A. Replacement Part for...$43.95 -
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 - 7/16"-14 x 1-1/2" Sprocket Pulley Mounting Hardware Kit with Washers fits '73-'98 FL, FX & XL Models (OEM #3769)
Colony Machine
$30.95Colony - 7/16"-14 x 1-1/2" Sprocket Pulley Mounting Hardware Kit with Washers fits '73-'98 FL, FX & XL Models (OEM #3769) Features: Brake rotor, sprocket and belt mounting kits Available to fit virtually all H-D brakes, chain and belt...$30.95 -
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
$14.95Colony - 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...$14.95 -
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
$364.09Drag 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...$364.09 -
Drag Specialties - XL Primary Cover fits '04-'05 Sportster Models - Satin Black
Drag Specialties
$309.01Drag 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...$309.01 -
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
$408.97Drag 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...$408.97 -
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
$50.95Drag 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...$50.95 -
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
$472.21Drag 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,...$472.21 -
Drag Specialties - Aluminum Outer Primary Covers fits '07-'16 Touring Models
Drag Specialties
$458.95 - $468.13Drag 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...$458.95 - $468.13 -
Colony - 2144-1 Aluminum Primary Cover Filler Caps fits '54-'70 Sportster Models (OEM #34742-52A)
Colony Machine
$22.95Colony - 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...$22.95 -
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
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
$40.75 - $42.79Drag 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...$40.75 - $42.79 -
Out of stock
Thrashin Supply Harley Derby Covers - Twin Cam/ Evo
Thrashin Supply
$119.95 - $129.95Thrashin Supply Harley Derby Covers - Twin Cam/ Evo The Thrashin Supply Co. Classic 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 choice of polished...$119.95 - $129.95 -
Out of stock
Drag Specialties - Inspection Covers - fits '04-'18 XL
Drag Specialties
$25.45 - $47.89Drag 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...$25.45 - $47.89 -
Out of stock
All Balls Racing - Inner Primary Bearing Kit fits '08-'13 Big Twin Models
All Balls Racing
$50.95All Balls Racing - Inner Primary Bearing Kit fits '08-'13 Big Twin Models$50.95 -
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
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.