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 5-Hole - Gold - Live to Ride Derby Cover 33-0065GA
DRAG SPECIALTIES
$87.95A derby cover serves as both protective armor and a style statement for your engine—this Drag Specialties piece delivers on both fronts. The 5-hole configuration ensures secure fitment on compatible...11070158- SKU:
- 11070158
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- GOLD
- MOUNTING STYLE:
- 5 HOLE
- STYLE:
- EAGLE WITH BANNER
- MODEL:
- LIVE TO RIDE
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
DRAG SPECIALTIES Sprocket Cover - Chrome - '04-'19 XL D26-0409C
DRAG SPECIALTIES
$102.95Protect your primary drivetrain from debris, moisture, and impact damage while maintaining clean aesthetics on your Harley-Davidson XL. This cast aluminum cover provides genuine OEM-level durability...11070279- SKU:
- 11070279
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- SPROCKET
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$102.95 -
DRAG SPECIALTIES Sprocket Cover - Polished - '86-'90 XL 26-0406
DRAG SPECIALTIES
$95.95The DRAG Specialties Sprocket Cover protects your primary drive system from road debris, moisture, and contamination that can compromise reliability and longevity. Cast aluminum construction delivers...11070282- SKU:
- 11070282
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- COLOR/FINISH:
- POLISHED
- PRODUCT NAME:
- COVER
- TYPE:
- SPROCKET
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$95.95 -
DRAG SPECIALTIES Outer Primary Cover - Chrome - '07-'17 Softail D11-0298
DRAG SPECIALTIES
$504.95A primary cover protects your Softail's most critical engine component—the clutch and primary drive system—from road debris, moisture, and contamination that can compromise performance and longevity...11070324- SKU:
- 11070324
- Availability:
- Ships Same Business Day
- Weight:
- 7.99 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
$504.95 -
DRAG SPECIALTIES Primary Plug - 1/8 NPT" 11-0291-P
DRAG SPECIALTIES
$17.95A primary drain plug is essential for reliable engine maintenance—it's your direct access point for clean, efficient oil changes without complications. The DRAG SPECIALTIES Primary Plug ensures a...11070326- SKU:
- 11070326
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- ZINC
- UNITS:
- EACH
- PRODUCT NAME:
- DRAIN PLUG
- RIDING STYLE:
- STREET
$17.95Qty in Cart: 0Quantity:Price:$17.95Subtotal: -
DRAG SPECIALTIES Black Inspection Cover D33-0115WB
DRAG SPECIALTIES
$30.95A clean, finished engine bay is the hallmark of a purpose-built machine—and this inspection cover delivers both aesthetic refinement and functional protection. Machined from billet aluminum, it...11070487- SKU:
- 11070487
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- INSPECTION COVER
- TYPE:
- PRIMARY
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$30.95 -
DRAG SPECIALTIES Polished Inspection Cover D33-0115P
DRAG SPECIALTIES
$28.95A quality inspection cover does more than protect critical engine components—it's a reflection of your attention to detail and commitment to preserving your machine's integrity. This DRAG SPECIALTIES...11070488- SKU:
- 11070488
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- INSPECTION COVER
- TYPE:
- PRIMARY
- UNITS:
- KIT
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
$28.95Qty in Cart: 0Quantity:Price:$28.95Subtotal: -
DRAG SPECIALTIES Chrome Derby Cover D33-0110
DRAG SPECIALTIES
$105.95A derby cover isn't just cosmetic—it protects your primary cover from road debris, moisture, and UV exposure while maintaining a clean, finished appearance on your engine. This Drag Specialties...11070489- SKU:
- 11070489
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$105.95 -
DRAG SPECIALTIES Inspection Cover - Chrome - '85-'06 FLT 33-0029
DRAG SPECIALTIES
$44.95Keep your FLT's powertrain protected while maintaining a factory-correct appearance. This chrome-plated inspection cover seals critical engine components against road debris and moisture, ensuring...11070390- SKU:
- 11070390
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- UNITS:
- EACH
- MOUNTING STYLE:
- 4 HOLE
- PRODUCT NAME:
- INSPECTION COVER
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
$44.95 -
DRAG SPECIALTIES Primary Plug - 1/2"-20 D11-0301-P
DRAG SPECIALTIES
$19.95A quality primary drain plug is essential for maintaining proper oil circulation and engine health in high-performance applications. The DRAG SPECIALTIES Primary Plug delivers reliable sealing with a...11070340- SKU:
- 11070340
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- ZINC
- PRODUCT NAME:
- DRAIN PLUG
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$19.95Qty in Cart: 0Quantity:Price:$19.95Subtotal: -
DRAG SPECIALTIES Outer Primary Cover - Black - '99-'06 Softail 11-0296KDSSB
DRAG SPECIALTIES
$388.95Your Softail's primary cover takes constant abuse from heat, debris, and vibration—a worn or damaged cover compromises both aesthetics and engine protection. The DRAG Specialties Outer Primary Cover...11070359- SKU:
- 11070359
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- COLOR/FINISH:
- SATIN BLACK
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- TYPE:
- OUTER PRIMARY
$388.95 -
DRAG SPECIALTIES Outer Primary Cover - Black - '95-'98 Softail 11-0293KDSSB
DRAG SPECIALTIES
$388.95The primary cover is a critical component that protects your engine's internal timing and clutch mechanisms from dirt, debris, and environmental exposure. A quality outer primary cover like this...11070360- SKU:
- 11070360
- Availability:
- Ships Same Business Day
- Weight:
- 8.45 LBS
- MATERIAL:
- ALUMINUM
- TYPE:
- OUTER PRIMARY
- COLOR/FINISH:
- SATIN BLACK
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$388.95Qty in Cart: 0Quantity:Price:$388.95Subtotal: -
DRAG SPECIALTIES Outer Primary Cover - Black - '89-'93 Softail 11-0291KDSSB
DRAG SPECIALTIES
$397.53Your Softail's primary cover takes a beating—road salt, debris, and constant vibration degrade stock covers quickly. This Drag Specialties outer primary cover is die-cast aluminum, engineered to...11070361- SKU:
- 11070361
- Availability:
- Ships Same Business Day
- Weight:
- 8.54 LBS
- MATERIAL:
- ALUMINUM
- TYPE:
- OUTER PRIMARY
- COLOR/FINISH:
- SATIN BLACK
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
$397.53Qty in Cart: 0Quantity:Price:$397.53Subtotal: -
DRAG SPECIALTIES Satin Black Derby Cover 33-0054SB
DRAG SPECIALTIES
$61.95A quality derby cover protects your primary cover from damage while delivering a clean, finished look to your engine. This Drag Specialties satin black option combines durability with understated...11070363- SKU:
- 11070363
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- SATIN BLACK
- UNITS:
- EACH
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
$61.95 -
DRAG SPECIALTIES Matte Black Derby Cover 33-0017KSB
DRAG SPECIALTIES
$45.95A quality derby cover protects your primary case from road debris and weather while presenting a finished look to your engine bay. The DRAG Specialties matte black finish resists glare and...11070365- SKU:
- 11070365
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MOUNTING STYLE:
- 3 HOLE
- COLOR/FINISH:
- MATTE BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
$45.95 -
DRAG SPECIALTIES Wrinkle Black Derby Cover 33-0016KWB
DRAG SPECIALTIES
$42.95A quality derby cover does more than protect your primary drive—it completes the aesthetic of your engine while shielding critical components from road debris and moisture. This Drag Specialties...11070366- SKU:
- 11070366
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MOUNTING STYLE:
- 4 HOLE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WRINKLE BLACK
- MATERIAL:
- DIE-CAST
$42.95 -
DRAG SPECIALTIES Satin Black Derby Cover 33-0016KSB
DRAG SPECIALTIES
$45.95A derby cover protects your primary drivetrain from dirt, debris, and weather while giving your Big Twin or Dyna a finished, polished look. This die-cast Drag Specialties cover combines durability...11070367- SKU:
- 11070367
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- DERBY COVER
- MOUNTING STYLE:
- 4 HOLE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SATIN BLACK
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- UNITS:
- EACH
$45.95Qty in Cart: 0Quantity:Price:$45.95Subtotal: -
DRAG SPECIALTIES Transmission Cover - Black I30-0212SB
DRAG SPECIALTIES
$125.95A transmission cover serves as essential protection against debris, moisture, and heat damage while maintaining clean engine aesthetics. This DRAG SPECIALTIES unit combines straightforward...11070368- SKU:
- 11070368
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SATIN
- MATERIAL:
- ZINC
- MOUNTING STYLE:
- 6 HOLE
- TYPE:
- TRANSMISSION SIDE
- RIDING STYLE:
- STREET
$125.95 -
DRAG SPECIALTIES Chrome Derby Cover 33-0054
DRAG SPECIALTIES
$61.95A chrome derby cover protects your primary cover from road debris and weather while delivering the polished aesthetic that separates a maintained machine from a neglected one. This die-cast design...11070047- SKU:
- 11070047
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$61.95Qty in Cart: 0Quantity:Price:$61.95Subtotal: -
DRAG SPECIALTIES Chrome Inspection Cover D33-0115C
DRAG SPECIALTIES
$34.95A quality inspection cover does more than protect internal components—it completes your engine's aesthetic while preventing debris ingress and maintaining structural integrity. The DRAG Specialties...11070486- SKU:
- 11070486
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- INSPECTION COVER
- UNITS:
- KIT
- TYPE:
- PRIMARY
$34.95
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.
