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
-
JOKER MACHINE Derby Cover - Flame 921017FC
JOKER MACHINE
$138.95A derby cover serves as both a functional and aesthetic component, protecting your primary cover while adding visual impact to your engine bay. The JOKER MACHINE Derby Cover elevates your bike's appearance with precision-crafted detailing and aggressive...DS375061- SKU:
- DS375061
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- STYLE:
- FLAME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$138.95 -
JOKER MACHINE Derby Cover - Smooth 921017C
JOKER MACHINE
$138.95A derby cover does more than protect your primary chaincase—it's a visual statement that separates a finished build from an incomplete one. The JOKER MACHINE Derby Cover delivers a clean, smooth aesthetic while safeguarding critical drivetrain components...DS375064- SKU:
- DS375064
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- DERBY
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- SMOOTH
$138.95Qty in Cart: 0Quantity:Price:$138.95Subtotal: -
JOKER MACHINE Inspection Cover - Hothead 921016HHC
JOKER MACHINE
$109.95Keep your engine bay looking sharp while maintaining quick access to vital inspection points. The JOKER MACHINE Hothead Inspection Cover delivers that clean, finished appearance without sacrificing functionality—ideal for show cars and serious builds...DS375066- SKU:
- DS375066
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MATERIAL:
- 6061-T6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- INSPECTION
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- STYLE:
- HOTHEAD
$109.95 -
JOKER MACHINE Derby Cover - Lucky 7 06-99L
JOKER MACHINE
$191.95A derby cover serves as both a functional engine seal and a visual statement on your motorcycle. The JOKER MACHINE Lucky 7 delivers meticulous CNC-machined craftsmanship with a distinctive design that commands attention without sacrificing durability or...DS375260- SKU:
- DS375260
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- RIDING STYLE:
- STREET
- STYLE:
- LUCKY-7
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- TYPE:
- DERBY
$191.95 -
DRAG SPECIALTIES Transmission End Cover Filler Cap 292032-HC3
DRAG SPECIALTIES
$6.92A transmission end cover filler cap is a critical maintenance component that prevents fluid loss, contamination, and pressure buildup inside your transmission housing. Over time, stock caps crack, corrode, or fail to seal properly—leading to costly fluid...DS325518- SKU:
- DS325518
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CAP
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION END
$6.92Qty in Cart: 0Quantity:Price:$6.92Subtotal: -
DRAG SPECIALTIES Transmission Top Cover - Chrome 302091-BX-LB2
DRAG SPECIALTIES
$86.95A transmission top cover is essential for protecting internal components from contamination while maintaining a finished appearance that complements your engine bay's aesthetic. This chrome Drag Specialties cover delivers both functional protection and...DS325530- SKU:
- DS325530
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POWDER-COATED
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION TOP
- MOUNTING STYLE:
- 5 HOLE
$86.95 -
DRAG SPECIALTIES Primary Cover - Chrome - '71-'85 FX 210093-BX60
DRAG SPECIALTIES
$304.95A primary cover serves as both a protective barrier and a visual statement on your classic FX. This die-cast chrome cover shields your primary drivetrain components from road debris and moisture while delivering the polished, finished look that separates...DS375623- SKU:
- DS375623
- Availability:
- Ships Same Business Day
- Weight:
- 5.31 LBS
- MOUNTING STYLE:
- 8 HOLE
- TYPE:
- OUTER PRIMARY
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$304.95Qty in Cart: 0Quantity:Price:$304.95Subtotal: -
DRAG SPECIALTIES Primary Cover - Chrome - '70-'84 FL 210094-BX60
DRAG SPECIALTIES
$281.95A quality primary cover protects your engine's internal components from road debris and weather while giving your bike a finished, professional appearance. The Drag Specialties Primary Cover delivers the durability and fit that Harley-Davidson FL owners...DS375624- SKU:
- DS375624
- Availability:
- Ships Same Business Day
- Weight:
- 5.38 LBS
- MATERIAL:
- ALUMINUM
- MOUNTING STYLE:
- 8 HOLE
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
$281.95 -
JIMS 6-Speed Transmission Door Black 2007-2016 Harley-Davidson FLHX 2336
JIMS
$469.40Stock transmission doors compromise shift precision and accelerate wear on your drivetrain through accumulated end play and shaft deflection. The JIMS 6-Speed Transmission Door eliminates these weak points with precision-machined construction and solid...11070357- SKU:
- 11070357
- Availability:
- Ships Same Business Day
- Weight:
- 3.75 LBS
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
- MATERIAL:
- 6061 ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 8 HOLE
- PRODUCT NAME:
- TRAP DOOR
- TRANSMISSION TYPE:
- 6-SPEED
$469.40 -
ARLEN NESS Derby Cover 700-005
ARLEN NESS
$169.95A derby cover does more than protect your primary cover—it's a statement of craftsmanship and attention to detail. The ARLEN NESS Derby Cover 700-005 combines precision machining with corrosion-resistant materials to deliver both functional protection...11070650- SKU:
- 11070650
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ORANGE ANODIZED
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
$169.95 -
ARLEN NESS Derby Cover 700-004
ARLEN NESS
$169.95A quality derby cover protects your primary case from road debris and weather while maintaining the polished aesthetics of your build. The ARLEN NESS Derby Cover 700-004 delivers both functionality and style through precision CNC machining and premium...11070649- SKU:
- 11070649
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- COLOR/FINISH:
- GOLD ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
- MOUNTING STYLE:
- 5 HOLE
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
ARLEN NESS Derby Cover 700-003
ARLEN NESS
$169.95A quality derby cover protects your primary drivetrain while delivering the finished look your bike deserves. The ARLEN NESS Derby Cover 700-003 combines precision machining with durable construction, ensuring your engine compartment maintains both...11070648- SKU:
- 11070648
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLUE ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING STYLE:
- 5 HOLE
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
ARLEN NESS Derby Cover 700-000
ARLEN NESS
$159.95A quality derby cover protects your engine's internal components from debris and moisture while providing a finished look to your bike's top end. The ARLEN NESS Derby Cover 700-000 combines precision machining with durable materials, giving you reliable...11070647- SKU:
- 11070647
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK ANODIZED
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MOUNTING STYLE:
- 5 HOLE
$159.95 -
BARNETT Derby Cover Spacer 686-30-16100
BARNETT
$82.04If you're installing a Barnett Scorpion Lock-up clutch in your FL Big Twin, this spacer kit is essential for proper derby cover fitment and seal integrity. The billet aluminum construction ensures precise tolerances while resisting wear, and the included...11070632- SKU:
- 11070632
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- DERBY COVER
- PRODUCT NAME:
- SPACER
- UNITS:
- KIT
$82.04 -
Rekluse Derby Cover Gloss Black 2004-2019 Harley-Davidson Sportster XL1200 RMS-0515001
REKLUSE
$249.00The stock derby cover on your Sportster XL1200 is functional—but the Rekluse billet aluminum replacement elevates both protection and aesthetics. This CNC-machined cover shields your primary drivetrain from debris and weather while delivering the...11070617- SKU:
- 11070617
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- GLOSS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
$249.00 -
Rekluse Derby Cover for 2004-2021 Harley-Davidson Sportster XL1200X RMS-0515002
REKLUSE
$249.00A derby cover does more than dress up your primary—it protects your clutch components from road debris, moisture, and UV exposure while maintaining the clean, purposeful aesthetic your Sportster deserves. The Rekluse RMS-0515002 delivers precision fit...11070618- SKU:
- 11070618
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WRINKLE BLACK
$249.00 -
Rekluse Derby Cover Black Gloss Harley-Davidson Dyna Low Rider 1999-2005 RMS-0515003
REKLUSE
$249.00Your Dyna Low Rider's clutch assembly deserves protection that matches its performance demands. The Rekluse Derby Cover RMS-0515003 shields your clutch while delivering a refined, finished appearance that factory covers simply can't match. Built from...11070619- SKU:
- 11070619
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GLOSS
$249.00 -
Rekluse Derby Cover 2018-2019 Harley-Davidson Softail Slim FLSL RMS-0515004
REKLUSE
$249.00Your Softail's primary drivetrain cover takes constant abuse from heat, debris, and oxidation—a quality derby cover protects that investment while maintaining a clean, finished appearance. The Rekluse RMS-0515004 delivers OEM-grade fitment and durability...11070620- SKU:
- 11070620
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- WRINKLE BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
$249.00 -
Rekluse Derby Clutch Cover Gloss Black 2016-2023 Harley-Davidson FLHR Road King RMS-0515005
REKLUSE
$249.00Your Road King's clutch cover is one of the first visual focal points of your drivetrain—and factory covers rarely deliver the aesthetic impact a machine of this caliber deserves. The Rekluse Derby Cover replaces that plain cover with precision-machined...11070621- SKU:
- 11070621
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COLOR/FINISH:
- GLOSS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$249.00 -
REKLUSE Derby Cover RMS-0515006
REKLUSE
$249.00A clutch cover takes constant abuse from heat, debris, and contact—factory plastic covers crack and warp under track conditions. The Rekluse Derby Cover RMS-0515006 replaces that weakness with billet aluminum construction that withstands repeated thermal...11070622- SKU:
- 11070622
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COLOR/FINISH:
- WRINKLE BLACK
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$249.00
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.
