Harley Transmission Covers
Harley-Davidson Transmission Covers at JJ Motorsports
Shield your Harley's primary and transmission with premium covers from JJ Motorsports, featuring chrome and black finishes for classic style and durability on Big Twin, Evo, and Twin Cam models. These billet and cast covers protect internals while adding custom flair.
Shop Paughco, Thrashin Supply Co, and Drag Specialties transmission covers for proven quality. Explore related categories such as Harley drivetrain for clutch and chains, or Harley for exhaust and seats to complete your build.
Top Harley-Davidson Transmission Covers
- Paughco Outer Primary Cover B750 – Cast aluminum outer primary cover; vintage-style for Big Twin models with clean fit.
- Thrashin Supply Co Derby Cover Black Classic TSC-3000-4 – Black classic derby cover; CNC-machined for Evo and Twin Cam with hidden fasteners.
- Drag Specialties Outer Primary Cover Chrome Narrow Profile 77957 – Chrome narrow primary cover; low-profile for custom Softail and Dyna builds.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
DRAG SPECIALTIES Chrome Derby Cover 33-0016K-BC427
DRAG SPECIALTIES
$44.24Die-cast construction with a domed design, Includes mounting hardware, '06 Dyna Glide and all '07-'18 Big Twin (except '16-'18 Dressers, '15 FLHTCUL/ FLHTKL, '18 FLSB) applications will require the use of gasket part 0934-0289 or 0934-0788.DS375647- SKU:
- DS375647
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MOUNTING STYLE:
- 4 HOLE
- COLOR/FINISH:
- CHROME
- MATERIAL:
- DIE-CAST
- RIDING STYLE:
- STREET
$44.24 -
On Sale
S&S CYCLE Transmission Side Cover 106-6479-00
S&S CYCLE
MSRP: $255.95Now: $230.36Was: $255.95Close to original as you can get without stealing one from a factory museum bike, Boss imperfections in the casting are maliciously duplicated to represent the casting capabilities of the era, 100% CNC-machined to achieve quality S&S standards, Inside of...11070498- SKU:
- 11070498
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- COLOR/FINISH:
- UNFINISHED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION END
- MOUNTING STYLE:
- 9 HOLE
MSRP: $255.95Now: $230.36Was: $255.95Qty in Cart: 0Quantity:Price:MSRP: $255.95Now: $230.36Was: $255.95Subtotal: -
PAUGHCO Inner Primary Cover - Chrome 753E
PAUGHCO
$239.95Made in the U.S.A.11070188- SKU:
- 11070188
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
On Sale
PRO-ONE PERF.MFG. Derby Cover - Millennium - Smooth 202120
PRO-ONE PERF.MFG.
MSRP: $115.45Now: $103.91Was: $115.45Billet aluminum coversDS375744- SKU:
- DS375744
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- UNITS:
- EACH
- MODEL:
- MILLENNIUM
- RIDING STYLE:
- STREET
- TYPE:
- DERBY
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- STYLE:
- SMOOTH
MSRP: $115.45Now: $103.91Was: $115.45 -
On Sale
PRO-ONE PERF.MFG. Derby Cover - Millennium - Ball Milled 202130
PRO-ONE PERF.MFG.
MSRP: $115.45Now: $103.91Was: $115.45Billet aluminum coversDS375745- SKU:
- DS375745
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- BALL-MILLED
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- MODEL:
- MILLENNIUM
- UNITS:
- EACH
MSRP: $115.45Now: $103.91Was: $115.45Qty in Cart: 0Quantity:Price:MSRP: $115.45Now: $103.91Was: $115.45Subtotal: -
TRASK Clutch Actuator Cover - Chrome - Hydraulic TM-2039CH
TRASK
$399.95Billet cover is used when converting from a cable clutch to hydraulic clutch, Include an upgraded throw-out bearing; a must for big motors with a heavier clutch pull, Require the use of 11/16" bore master cylinder, Hydraulic clutch line must be purchased...11070406- SKU:
- 11070406
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- MOUNTING STYLE:
- 6 HOLE
- TRANSMISSION TYPE:
- 6-SPEED
- TYPE:
- TRANSMISSION SIDE
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$399.95Qty in Cart: 0Quantity:Price:$399.95Subtotal: -
THRASHIN SUPPLY CO. Derby Cover - Polished - Classic TSC-3010-2
THRASHIN SUPPLY CO.
$129.956061 billet aluminum construction, Includes gasket, Made in U.S.A.11070586- SKU:
- 11070586
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MOUNTING STYLE:
- 5 HOLE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- 6061 BILLET ALUMINUM
- STYLE:
- CLASSIC
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
$129.95Qty in Cart: 0Quantity:Price:$129.95Subtotal: -
BAKER DRIVETRAIN Transmission Cover DD7-10602-A
BAKER DRIVETRAIN
$479.00Low-profile external features allow maximum exhaust clearance, 12-point stainless steel ARP bolts and gasket included, All side covers have hydraulic feed and include 1.5" diameter piston; compatible with OEM or 11/16" hydraulic master cylinders,...11070687- SKU:
- 11070687
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- POLISHED
- UNITS:
- KIT
$479.00 -
FEULING OIL PUMP CORP. American Derby Cover - Polished 9151
FEULING OIL PUMP CORP.
$159.95Dress your motorcycle in style with a FEULING® derby cover, machined from billet 6061 aluminum, Bolts onto the factory primary cover, Show Polished with engraved American Flag Logo11070613- SKU:
- 11070613
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- COLOR/FINISH:
- SILVER
- COLOR/FINISH:
- POLISHED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- DERBY
$159.95 -
DRAG SPECIALTIES Inspection Cover 14009
DRAG SPECIALTIES
$21.58Machined from steelDS325293- SKU:
- DS325293
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- MOUNTING STYLE:
- 4 HOLE
- MATERIAL:
- STEEL
- UNITS:
- EACH
- PRODUCT NAME:
- INSPECTION COVER
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
$21.58 -
On Sale
COVINGTONS Derby Cover - Diamond Edge - Machine Head C1076-D
COVINGTONS
MSRP: $406.95Now: $260.00Was: $406.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070494- SKU:
- 11070494
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- STYLE:
- MACHINE HEAD
- TYPE:
- DERBY
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $406.95Now: $260.00Was: $406.95Qty in Cart: 0Quantity:Price:MSRP: $406.95Now: $260.00Was: $406.95Subtotal: -
COVINGTONS Inspection Cover - Black - Finned C1195-B
COVINGTONS
$90.95CNC-machined from billet aluminum, Made in the U.S.A.11070249- SKU:
- 11070249
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- COLOR/FINISH:
- POWDER-COATED
- MOUNTING STYLE:
- 4 HOLE
- PRODUCT NAME:
- COVER
- STYLE:
- FINNED
- UNITS:
- EACH
- TYPE:
- INSPECTION
$90.95 -
COVINGTONS Inspection Cover - Chrome - Finned C1195-C
COVINGTONS
$90.95CNC-machined from billet aluminum, Made in the U.S.A.11070250- SKU:
- 11070250
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- INSPECTION
- COLOR/FINISH:
- CHROME
- MOUNTING STYLE:
- 4 HOLE
- PRODUCT NAME:
- COVER
- STYLE:
- FINNED
- UNITS:
- EACH
$90.95Qty in Cart: 0Quantity:Price:$90.95Subtotal: -
COVINGTONS Derby Cover - Black - Finned C1072-B
COVINGTONS
$216.95CNC-machined from billet aluminum, Includes mounting hardware, Made in the U.S.A.11070122- SKU:
- 11070122
- Availability:
- Ships Same Business Day
- Weight:
- 1.98 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- UNITS:
- EACH
$216.95Qty in Cart: 0Quantity:Price:$216.95Subtotal: -
FEULING OIL PUMP CORP. American Derby Cover - Black 9162
FEULING OIL PUMP CORP.
$159.95Dress your motorcycle in style with a FEULING® derby cover, machined from billet 6061 aluminum, Bolts onto the factory primary cover, Show Polished with engraved American Flag Logo11070616- SKU:
- 11070616
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- GLOSS
- TYPE:
- DERBY
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
DRAG SPECIALTIES Chrome Inspection Cover 210305
DRAG SPECIALTIES
$25.70Machined from billet aluminum11070106- SKU:
- 11070106
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- INSPECTION COVER
- UNITS:
- KIT
$25.70Qty in Cart: 0Quantity:Price:$25.70Subtotal: -
DRAG SPECIALTIES Primary Cover 210366
DRAG SPECIALTIES
$364.57Die-cast aluminum construction, Inspection covers and derby covers are available separately11070285- SKU:
- 11070285
- Availability:
- Ships Same Business Day
- Weight:
- 5.80 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- TYPE:
- PRIMARY
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SATIN
$364.57Qty in Cart: 0Quantity:Price:$364.57Subtotal: -
DRAG SPECIALTIES 5-Hole - Chrome - Live to Ride Derby Cover D33-0110CA
DRAG SPECIALTIES
$108.10Feature a detailed plated eagle and banner, Script is recessed11070554- SKU:
- 11070554
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- DERBY COVER
- MOUNTING STYLE:
- 5 HOLE
- RIDING STYLE:
- STREET
- MODEL:
- LIVE TO RIDE
- STYLE:
- EAGLE WITH BANNER
$108.10 -
DRAG SPECIALTIES Matte Black Derby Cover D33-0110MB
DRAG SPECIALTIES
$109.13Die-cast construction with a domed design, Includes mounting hardware, '06 Dyna Glide and all '07-'18 Big Twin (except '16-'18 Dressers, '15 FLHTCUL/ FLHTKL, '18 FLSB) applications will require the use of gasket part 0934-0289 or 0934-0788.11070557- SKU:
- 11070557
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MOUNTING STYLE:
- 5 HOLE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- MATTE BLACK
$109.13Qty in Cart: 0Quantity:Price:$109.13Subtotal: -
DRAG SPECIALTIES Inspection Cover - Chrome - '85-'94 FXR 33-0009A
DRAG SPECIALTIES
$46.30Chrome-plated steel construction, Uses OEM hardware and gasket, For use with mid controls11070389- SKU:
- 11070389
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- TYPE:
- PRIMARY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- INSPECTION COVER
- MOUNTING STYLE:
- 4 HOLE
- RIDING STYLE:
- STREET
$46.30Qty in Cart: 0Quantity:Price:$46.30Subtotal:
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Transmission Covers
- Compatibility: Ensure covers fit your Harley's model (e.g., Big Twin, Evo, Twin Cam, custom Softail/Dyna) and specifics like mounting holes (e.g., 8-hole for derby, 2-hole for inspection). Use the vehicle selector for year-specific matches to avoid fit issues.
- Type of Use: For aesthetic upgrades or custom looks, opt for derby/inspection covers; primary covers (inner/outer) suit protection and style in street riding; clutch actuators ideal for hydraulic systems in touring conditions.
- Components and Upgrades: Select derby covers with see-through windows or hidden fasteners, primary covers for narrow profiles, or actuators with banjo bolts. Focus on included hardware (e.g., bleeder screws) for complete installation.
- Brand and Quality: Choose PAUGHCO for chrome/black primary covers, Thrashin Supply Co for CNC-machined derby covers, Drag Specialties for narrow profile primaries, PRO-ONE PERF.MFG. for ball-milled/millennium derby covers, or TRASK for see-through assault covers. Prioritize cast/billet aluminum for durability and corrosion resistance.
- Installation and Cost: Most are bolt-on using OEM bolts; prices range from $28.95 for inspection covers to $317.95 for outer primaries—factor in finishes (chrome, black, gloss) and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these transmission covers support? Covers support Big Twin, Evo, Twin Cam, and custom Softail/Dyna models—use the year/make/model filter for exact compatibility with stock H-D or aftermarket primaries.
- How do derby covers improve style? Designs like ball-milled, smooth, or see-through windows (e.g., TRASK with acrylic) add custom aesthetics with 8-hole mounting for easy swaps.
- What is typically included with clutch actuators? Actuators like PRO-ONE include 10mm banjo bolt, washers, bleeder screw—require separate 11/16" bore master cylinder and hydraulic line.
- What materials are used in covers? Primarily cast aluminum or billet aluminum with chrome, black (gloss/anodized), or raw finishes for style and durability.
- What if a cover doesn't fit my Harley? Verify mounting style (e.g., 8-hole derby, 2-hole inspection) and model before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related drivetrain parts? Yes—explore clutches, belts, sprockets, or full kits in the Harley drivetrain category to complement your transmission cover upgrade.
