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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 -
Drag Specialties - Primary Chain Inspection Covers - fits '00-'06 FXST/FLST, '99-'05 FXDWG
Drag Specialties
$21.58 - $23.64Drag Specialties Primary Chain Inspection Covers Features: Machined from steel Available with a chrome, black wrinkle or flat black finish Sold each Fitment: (Repl. OEM 60572-78) YearMakeModel 2005 Harley-Davidson 15th Anniversary...$21.58 - $23.64 -
Drag Specialties - Harley Davidson Primary Chain
Drag Specialties
$128.70 - $154.45Drag Specialties Primary Chain This primary chain by Drag was designed to last made using high quality raw materials. Features: Improved fatigue resistance Pre-loaded to reduce initial elongation Endless construction using...$128.70 - $154.45 -
PSR - Manual Primary Chain Tensioner fits '07-'17 Softail & '06-'17 Dyna Models
PSR
$222.95PSR - Manual Primary Chain Tensioner fits '07-'17 Softail & '06-'17 Dyna 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...$222.95 -
James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Silicone Bead fits '94-'06 Softail & '94-'05 Dyna Glide Models
James Gaskets
$96.95James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Silicone Bead fits '94-'06 Softail & '94-'05 Dyna Glide Models This kit features top-quality gaskets, seals and O-rings that meet or exceed OEM specifications. Features Primary gasket...$96.95 -
Baker - High Torque Bearing/Seal Kit fits '99-'06 Harley Twin Cam
Baker Drivetrain
$66.00Baker - High Torque Bearing/Seal Kit fits '99-'06 Harley Twin Cam If your Harley has got some serious horsepower then this is just what you need. The Baker High Torque Bearing/Seal Kit is made to replace the two-piece bearing and seal in the inner...$66.00 -
All Balls Racing - Inner Primary Bearing Kit fits '08-'13 Big Twin Models
All Balls
$51.45All Balls Racing - Inner Primary Bearing Kit fits '08-'13 Big Twin Models$51.45 -
Baker - High Torque Replacement Seal fits '99-'06 Harley Twin Cam
Baker Drivetrain
$17.50Baker - High Torque Replacement Seal fits '99-'06 Harley Twin Cam If your Harley has got some serious horsepower then this is just what you need. The Baker High Torque Replacement Seal is made to replace the seal in Baker High Torque Bearing/Seal...$17.50 -
Feuling - 12-Point External Primary/Transmission Engine Fastener Kit fits '99-'05 Dyna Models
Feuling
$289.95Feuling - 12-Point External Primary/Transmission Engine Fastener Kit fits '99-'05 Dyna Models The 12-Point External Primary/Transmission Engine Fastener Kit allows you to secure your engine with complete confidence. The kit comes with all of the...$289.95 -
Trask Assault Series Derby Cover - fits '16-'21 Harley Touring Models
Trask Performance
$279.95Trask Assault Series Derby Cover - fits '16-'21 Harley Touring Models Upgrade the look of your Harley Davidson's primary with this see-through derby cover from Trask performance. Available in Chrome, Gloss Black, and Raw Machined. Features: Billet...$279.95 -
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 -
Baker - Armored Attitude Chain Adjuster fits '06-'17 Dyna, '07-'17 Softail and '07-'23 Touring Models
Baker Drivetrain
$299.00Baker - Armored Attitude Chain Adjuster fits '06-'17 Dyna, '07-'17 Softail and '07-'23 Touring Models Features 28% finer teeth spacing (compared to '01-'06 chain adjuster) for more accurate adjustments Active Plate and Back Support Plate investment...$299.00 -
Energy Suspension - Poly Cush Drive fits '09 & Up Touring Models
Energy Suspension
$46.99Energy Suspension - Poly Cush Drive fits '09 & Up Touring Models Features Manufactured with proprietary Hyer-Flex™ Polyurethane Out performs and outlasts OEM rubber Resists Oils and Chemicals Smoother ride Fitment 2019 - FLHR Road...$46.99 -
Jims - 2317 Primary Locking Bar for 5-Speed FXR/FLT/FLHT Models
Jims
$43.95Jims - 2317 Primary Locking Bar for 5-Speed FXR/FLT/FLHT Models This bar is to be used to lock primary for service work. Features Immobilizes primary drive Allows for tightening with a torque wrench or loosening with a breaker bar Prevents...$43.95 -
Colony Machine - Primary Cover Bolt Kit fits '17-'21 Touring, '07-'20 Softail Models (Except FXSB/FXBR/FXDRS)
Colony Machine
$41.95Colony Machine - Primary Cover Bolt Kit fits '17-'20 Touring, '07-'20 Softail Models (Except FXSB/FXBR/FXDRS) The Colony Machine Primary Cover Kit is a polished Allen Bolt Kit that is 100% manufactured in the U.S.A. Colony Machine is a choice brand...$41.95 -
James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Foamet® fits '94-'06 Softail & '94-'05 Dyna Glide Models
James Gaskets
$119.95James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Foamet® fits '94-'06 Softail & '94-'05 Dyna Glide Models This kit features top-quality gaskets, seals and O-rings that meet or exceed OEM specifications. Features Primary gasket...$119.95 -
James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Silicone Bead fits '04-'21 Sportster Models (Exc. '21 Sportster S/RH1250S)
James Gaskets
$39.95James Gaskets - Primary Gasket, Seal & O-Ring Kit W/ Silicone Bead fits '04-'21 Sportster Models (Exc. '21 Sportster S/RH1250S) This kit features top-quality gaskets, seals and O-rings that meet or exceed OEM specifications. Features Primary...$39.95 -
Drag Specialties - Derby Covers - Fits '16-'18 FLHT/FLHX/FLTRS, '15 FLHTCUL/FLHTKL
Drag Specialties
$78.23 - $99.86Drag Specialties - Derby Covers These Domed Design Derby Covers have a clean simple look. Features: Die-cast construction Available in multiple finishes Includes mounting hardware Fitment: '16-'18 FLHT/FLHX/FLTRS '15 FLHTCUL/FLHTKL$78.23 - $99.86 -
Drag Specialties - Outer Primary Cover - fits Dyna & Softail Models
Drag Specialties
$364.57 - $367.66Drag Specialties Outer Primary Cover fits Dyna and Softail Models Drag Specialties outer primary kit is just what you need for your Harley Davidson if you're looking to switch it up a bit. Made from durable aluminum, this cover can withstand just about...$364.57 - $367.66 -
Colony Machine - Primary Cover Bolt Kit fits '07-'16 Touring Models
Colony Machine
$45.95Colony Machine - Primary Cover Bolt Kit fits '07-'16 Touring Models The Colony Machine Primary Cover Kit is a polished Allen Bolt Kit that is 100% manufactured in the U.S.A. Colony Machine is a choice brand among custom motorcycle builders, specializing...$45.95 -
James Gaskets - Gasket Kit, Primary Cover - fits '05-'06 Touring Models
James Gaskets
$75.95The James Gaskets Gasket Kit,Primary: State of the art material Made in the USA Fitment: '05-'06 Touring Models$75.95 -
James Gaskets - Gasket-Seal Kit, Primary Cover - fits '94-'04 FLT, FXR
James Gaskets
$98.95James Gaskets Gasket Kits use state of the art materials and production methods to make the best gaskets available. Made in the USA Fitment: '94-'04 FLT, FXR$98.95 -
Barnett - Clear Derby Cover Black fits '99-'06 Big Twin Models
Barnett
$234.74Barnett - Clear Derby Cover Black fits '99-'06 Big Twin Models Feature a quarter inch thick, clear polycarbonate window to your clutch. The outer cover is CNC machinced from billet aluminum, chrome plated and then the scratch and discoloration...$234.74 -
Colony - 1-1/4" Sprocket/Belt Pulley Mounting Hardware Kit with Nuts fits '73-'92 FL, FX & XL Models (OEM #41197-73)
Colony Machine
$25.95Colony - 1-1/4" Sprocket/Belt Pulley Mounting Hardware Kit with Nuts fits '73-'92 FL, FX & XL Models (OEM #41197-73) Features: Brake rotor, sprocket and belt mounting kits Available to fit virtually all H-D brakes, chain and belt...$25.95 -
Feuling - 12-Point External Primary/Transmission Engine Fastener Kit fits '17-'22 Touring Models
Feuling
$269.95Feuling - 12-Point External Primary/Transmission Engine Fastener Kit fits '17-'22 Touring Models This kit comes with a primary cover, a derby cover, top transmission cover right transmission bearing housing, a clutch release cover, sensors and...$269.95 -
Drag Specialties - Outer Primary Cover - fits '84-'85 FXST and '71-'84 FX/FXWG
Drag Specialties
$287.59 - $314.10Drag Specialties Outer Primary Cover fits '84-'85 FXST and '71-'84 FX/FXWG Drag Specialties outer primary kit is just what you need for your Harley Davidson if you're looking to switch it up a bit. Made from durable aluminum, this cover can withstand...$287.59 - $314.10 -
James Gaskets - Gasket Kit, Primary Cover - fits '07-Up Touring Models
James Gaskets
$75.95The James Gaskets Gasket Kit,Primary: State of the art material Foam covered metal w/ bead Made in the USA Fitment: '07-Up Touring Models$75.95 -
Feuling - 12-Point Primary/Transmission Engine Fastener Kit fits '00-'06 Touring Models
Feuling
$269.95Feuling - 12-Point Primary/Transmission Engine Fastener Kit fits '00-'06 Touring Models The 12-Point Primary/Transmission Engine Fastener Kit allows you to secure your engine with complete confidence. The kit comes with all of the following hardware:...$269.95 -
Drag Specialties - Primary Drive Kit - fits '99-'06 Harley Big Twin
Drag Specialties
$926.95Drag Specialties Primary Drive Kit fits '99-'06 Harley Big Twin Drag Specialties is known for having quality products at reasonable prices. This primary drive kit is just that. This kit has got just about everything covered, it comes with the...$926.95 -
James Gasket - Primary Cover Gasket fits '06-'16 FLT, '07-'17 Softail/Dyna Models (OEM #34934-06)
James Gaskets
$30.95James Gasket - Primary Cover Gasket fits '06-'16 FLT, '07-'17 Softail/Dyna Models (OEM #34934-06) Features: Top quality gasket Made in the USA Fitment 2016-2017 Harley-Davidson Fat Boy S...$30.95 -
Thrashin' Supply - Finned Five-Hole Derby Covers fits '16 & Up Touring Models
Thrashin Supply
$179.95Thrashin' Supply - Finned 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...$179.95 -
Jims - 2312 Primary Locking Bar for '07-'16 Touring Models
Jims
$77.95Jims - 2312 Primary Locking Bar for '07-'16 Touring Models This bar is to be used to lock primary for service work. Features Immobilizes primary drive Allows for tightening with a torque wrench or loosening with a breaker bar Prevents damage...$77.95 -
Drag Specialties - Aluminum Outer Primary Covers fits '99-'06 Touring Models
Drag Specialties
$380.02 - $425.34Drag Specialties - Aluminum Outer Primary Covers fits '99-'06 Touring Models The Drag Specialties Aluminum Outer Primary Cover is a replacement for OEM #60665-99. It is available in your choice of a chrome or satin black finish. Features Die-cast...$380.02 - $425.34 -
Covington's Customs - Finned Inspection Covers - fits '99-'06 FLT/FLHT/FLHR/FLTR
Covington's Customs
$90.95Covington's Customs Finned Inspection Covers - fits '99-'06 Touring Models These Finned Inspection Cover are CNC-machined from billet aluminum and are available in Gloss Black or Chrome. Features: FINNED INSPECTION COVERS CNC-machined from billet...$90.95 -
Drag Specialties - Chrome Outer Primary Cover - fits '70-'84 FL
Drag Specialties
$290.41Drag Specialties - Chrome Outer Primary Cover - fits '70-'84 FL Drag Specialties outer primary kit is just what you need for your Harley Davidson if you're looking to switch it up a bit. Made from durable aluminum, this cover can withstand just about...$290.41 -
James Gaskets - Gasket Kit, Inspection-Derby Cover - fits '99-'06 Touring Models
James Gaskets
$27.95The James Gaskets Gasket Kit,Inspection-Derby Cover: State of the art material Made in the USA Fitment: '99-'06 Touring Models$27.95 -
James Gasket - Engine Inner Primary Seal fits '17-'23 M-Eight Models (OEM #256004-55, 257004-55)
James Gaskets
$24.95James Gasket - Engine Inner Primary Seal fits '17-'23 M-Eight Models (OEM #256004-55, 257004-55) Features: Made in the U.S.A. Fitment 2020 Harley-Davidson Road Glide Limited FLTRK - - 2020 Harley-Davidson Softail Low Rider S...$24.95 -
James Gasket - Primary Cover Gasket fits '17-'23 Touring Models (OEM #257003-78)
James Gaskets
$42.95James Gasket - Primary Cover Gasket fits '17-'23 Touring Models (OEM #257003-78) Features: Replacement Engine Gasket Fitment 2020, 2022 Harley-Davidson Road Glide Limited...$42.95 -
James Gasket - Primary Gasket fits '65-'84 FL/FLH/FX/FXE/FXWG Models (Gaskets, Seals and O-Rings)
James Gaskets
$98.95James Gasket - Primary Gasket fits '65-'84 FL/FLH/FX/FXE/FXWG Models (Gaskets, Seals and O-Rings) Features: Top quality gaskets, seals and O-rings meet or exceed OEM specifications Primary gasket features silicone beading Made in the...$98.95 -
James Gasket - Primary Gasket fits '65-'84 FL/FLH/FX/FXE/FXWG Models
James Gaskets
$86.95James Gasket - Primary Gasket fits '65-'84 FL/FLH/FX/FXE/FXWG Models Features: Top quality gaskets, seals and O-rings meet or exceed OEM specifications Primary gasket features silicone beading Made in the USA Note: Seals not...$86.95
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.