Harley Engine Covers
Harley Bike Engine Covers at JJ Motorsports
Dress your Harley’s engine with premium billet and machined covers from JJ Motorsports, featuring chrome and black finishes for custom style and perfect fit on Twin Cam, M8, and Evo models. These high-quality cam covers, point covers, and derby covers add aggressive looks while protecting internals.
Shop Trask, Rough Crafts, and Thrashin Supply Co engine covers for race-inspired design. Explore related categories such as Harley engine for cams and lifters, or Harley for primary and derby covers to complete your custom engine build.
Top Harley Engine Covers
- Trask Assault Cam Cover Chrome Twin Cam TM-017CH – Chrome Assault series cam cover; bold styling for 1999-2017 Twin Cam engines.
- Rough Crafts Black Cam Cover Grooved RC-610-002 – Black anodized grooved cam cover; minimalist aggressive look for M8 and Twin Cam.
- Thrashin Supply Co Point Cover Dish Black Twin Cam TSC-3026-4 – Black dish-style points cover; clean machined design for 1999-2017 Twin Cam.
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
-
On Sale
ARLEN NESS Rocker Cover Box - 10 Gauge - Black 18-253
ARLEN NESS
MSRP: $549.95Now: $494.96Was: $549.95If you're looking to upgrade your engine's appearance without compromising quality or fitment, the ARLEN NESS Rocker Cover Box delivers precision machining with unmistakable style. Built from 6061 T-6 forged billet aluminum, this cover provides...09401342- SKU:
- 09401342
- Availability:
- Ships Same Business Day
- Weight:
- 3.95 LBS
- COLOR/FINISH:
- MACHINED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- ROCKER BOX
- COLOR/FINISH:
- BLACK
- MODEL:
- 10 GAUGE
- UNITS:
- PAIR
MSRP: $549.95Now: $494.96Was: $549.95Qty in Cart: 0Quantity:Price:MSRP: $549.95Now: $494.96Was: $549.95Subtotal: -
On Sale
ARLEN NESS Cam Cover - 10 Gauge - Chrome 03-962
ARLEN NESS
MSRP: $299.95Now: $269.96Was: $299.95OEM cam covers are prone to cracking and warping under high heat and vibration—a weak point that compromises engine aesthetics and reliability. The ARLEN NESS 10 Gauge Cam Cover delivers a precision-machined upgrade that handles extreme conditions while...09401343- SKU:
- 09401343
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- CAM
- UNITS:
- EACH
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $299.95Now: $269.96Was: $299.95 -
On Sale
ARLEN NESS Cam Cover - 10 Gauge - Black 03-963
ARLEN NESS
MSRP: $299.95Now: $269.96Was: $299.95The stock cam cover on your bike is a die-cast component prone to cracking and leaking—especially under high heat and vibration. This ARLEN NESS replacement upgrades you to a precision-machined 6061 T-6 forged aluminum cover that delivers superior...09401344- SKU:
- 09401344
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- MODEL:
- 10 GAUGE
- MATERIAL:
- 6061 T-6 ALUMINUM
- COLOR/FINISH:
- BLACK ANODIZED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- TYPE:
- CAM
MSRP: $299.95Now: $269.96Was: $299.95 -
On Sale
ARLEN NESS Lifter Block - Cover - 10 Gauge - Chrome 12-572
ARLEN NESS
MSRP: $199.95Now: $179.96Was: $199.95A quality lifter block cover protects critical engine components from debris, moisture, and contamination while maintaining a clean, professional appearance on your build. This ARLEN NESS cover combines precision engineering with durability, ensuring...09401345- SKU:
- 09401345
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- LIFTER BLOCK
- UNITS:
- PAIR
- MODEL:
- 10 GAUGE
- MATERIAL:
- 6061-T6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $199.95Now: $179.96Was: $199.95Qty in Cart: 0Quantity:Price:MSRP: $199.95Now: $179.96Was: $199.95Subtotal: -
On Sale
ARLEN NESS Cam Cover - 10 Gauge - Black - M8 03-983
ARLEN NESS
MSRP: $329.95Now: $296.96Was: $329.95The OEM cam cover on your M8 is a die-cast component that can crack under thermal stress and vibration—compromising engine aesthetics and potentially causing oil seepage. The ARLEN NESS 10 Gauge Cam Cover replaces it with a CNC-machined 6061 T-6 forged...09401659- SKU:
- 09401659
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- COLOR/FINISH:
- BLACK ANODIZED
- COLOR/FINISH:
- MACHINED
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- TYPE:
- CAM
- UNITS:
- EACH
MSRP: $329.95Now: $296.96Was: $329.95Qty in Cart: 0Quantity:Price:MSRP: $329.95Now: $296.96Was: $329.95Subtotal: -
On Sale
ARLEN NESS Rocker Cover Box - 10 Gauge - Chrome 18-262
ARLEN NESS
MSRP: $699.95Now: $629.96Was: $699.95If you're looking to elevate your engine's visual presence while maintaining OEM reliability, the ARLEN NESS Rocker Cover Box delivers a dramatic aesthetic upgrade without compromising fit or function. Machined from premium 6061 T-6 forged billet...09401662- SKU:
- 09401662
- Availability:
- Ships Same Business Day
- Weight:
- 5.95 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- PAIR
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- CHROME
MSRP: $699.95Now: $629.96Was: $699.95 -
On Sale
ARLEN NESS Rocker Cover Box - 10 Gauge - Black 18-263
ARLEN NESS
MSRP: $699.95Now: $629.96Was: $699.95If you're looking to elevate your engine's visual presence while maintaining OEM-level reliability, the ARLEN NESS Rocker Cover Box delivers both style and substance. This 10-gauge billet aluminum cover replaces your stock rocker boxes with...09401663- SKU:
- 09401663
- Availability:
- Ships Same Business Day
- Weight:
- 5.66 LBS
- COLOR/FINISH:
- MACHINED
- PRODUCT NAME:
- COVER
- TYPE:
- ROCKER BOX
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
MSRP: $699.95Now: $629.96Was: $699.95Qty in Cart: 0Quantity:Price:MSRP: $699.95Now: $629.96Was: $699.95Subtotal: -
On Sale
ARLEN NESS Cam Cover - Black 03-975
ARLEN NESS
MSRP: $299.95Now: $269.96Was: $299.95The OEM die-cast cam cover on your Harley is functional but susceptible to cracking and corrosion over time. This ARLEN NESS replacement upgrades you to 6061 T-6 forged aluminum—a material that resists thermal stress, delivers a cleaner appearance, and...09401901- SKU:
- 09401901
- Availability:
- Ships Same Business Day
- Weight:
- 3.01 LBS
- COLOR/FINISH:
- BLACK ANODIZED
- MODEL:
- 10 GAUGE
- MATERIAL:
- 6061 T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- TYPE:
- CAM
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $299.95Now: $269.96Was: $299.95 -
On Sale
ARLEN NESS Cam Cover - Black 03-985
ARLEN NESS
MSRP: $329.95Now: $296.96Was: $329.95The OEM die-cast cam cover is prone to cracking and corrosion, compromising both aesthetics and engine protection. ARLEN NESS solves this with a billet-grade aluminum replacement that delivers superior durability while maintaining a clean, purposeful...09401903- SKU:
- 09401903
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- COLOR/FINISH:
- BLACK ANODIZED
- PRODUCT NAME:
- COVER
- MODEL:
- 10 GAUGE
- TYPE:
- CAM
- UNITS:
- EACH
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $329.95Now: $296.96Was: $329.95 -
On Sale
ARLEN NESS Cam Cover - Titanium 03-986
ARLEN NESS
MSRP: $329.95Now: $296.96Was: $329.95The ARLEN NESS Cam Cover 03-986 delivers a meaningful upgrade over stock die-cast components by replacing flex and wear with precision-machined rigidity. Constructed from 6061 T-6 forged aluminum, this cover resists thermal stress and vibration far...09401904- SKU:
- 09401904
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- TYPE:
- CAM
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- 6061 T-6 ALUMINUM
- MODEL:
- 10 GAUGE
MSRP: $329.95Now: $296.96Was: $329.95 -
On Sale
ARLEN NESS Lifter Block - Black 12-574
ARLEN NESS
MSRP: $209.95Now: $188.96Was: $209.95The ARLEN NESS Lifter Block is engineered for builders who demand precision fitment and durability in their engine assembly. This CNC-machined component provides the exact lift and clearance needed for reliable valve train operation, eliminating...09401905- SKU:
- 09401905
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK ANODIZED
- MODEL:
- 10 GAUGE
- RIDING STYLE:
- STREET
- TYPE:
- LIFTER BLOCK
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 6061-T6 BILLET ALUMINUM
- UNITS:
- PAIR
MSRP: $209.95Now: $188.96Was: $209.95Qty in Cart: 0Quantity:Price:MSRP: $209.95Now: $188.96Was: $209.95Subtotal: -
On Sale
ARLEN NESS Lifter Block - Titanium 12-575
ARLEN NESS
MSRP: $209.95Now: $188.96Was: $209.95The ARLEN NESS Lifter Block 12-575 provides the precision spacing and alignment your engine build demands, ensuring accurate valve train geometry and eliminating costly guesswork during assembly. CNC-machined from billet aluminum, this component delivers...09401906- SKU:
- 09401906
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- MATERIAL:
- 6061-T6 BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- TITANIUM
- MODEL:
- 10 GAUGE
- TYPE:
- LIFTER BLOCK
MSRP: $209.95Now: $188.96Was: $209.95Qty in Cart: 0Quantity:Price:MSRP: $209.95Now: $188.96Was: $209.95Subtotal: -
On Sale
ARLEN NESS Lifter Block - Titanium 12-585
ARLEN NESS
MSRP: $249.95Now: $224.96Was: $249.95The ARLEN NESS Lifter Block is an essential upgrade for builders seeking precision and reliability in high-performance engine assembly. This CNC-machined component ensures proper valve train geometry and clearance, critical for maintaining consistent...09401908- SKU:
- 09401908
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- MATERIAL:
- 6061-T6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- TITANIUM
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- TYPE:
- LIFTER BLOCK
MSRP: $249.95Now: $224.96Was: $249.95Qty in Cart: 0Quantity:Price:MSRP: $249.95Now: $224.96Was: $249.95Subtotal: -
On Sale
ARLEN NESS Rocker Cover - Black 18-256
ARLEN NESS
MSRP: $549.95Now: $494.96Was: $549.95If you're looking to elevate your engine's visual presence without compromising function, the ARLEN NESS Rocker Cover delivers a precision-engineered alternative to stock top covers. This billet aluminum piece transforms the upper engine aesthetic while...09401909- SKU:
- 09401909
- Availability:
- Ships Same Business Day
- Weight:
- 3.71 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- COLOR/FINISH:
- BLACK
- UNITS:
- PAIR
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
MSRP: $549.95Now: $494.96Was: $549.95 -
On Sale
ARLEN NESS Rocker Cover - Titanium 18-257
ARLEN NESS
MSRP: $549.95Now: $494.96Was: $549.95If you're looking to elevate your engine's visual presence while maintaining OEM reliability, the ARLEN NESS Rocker Cover delivers the custom aesthetic your build deserves. This CNC-machined billet piece replaces your factory top rocker box cover with a...09401910- SKU:
- 09401910
- Availability:
- Ships Same Business Day
- Weight:
- 3.66 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- COLOR/FINISH:
- TITANIUM
- PRODUCT NAME:
- COVER
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
MSRP: $549.95Now: $494.96Was: $549.95 -
On Sale
ARLEN NESS Rocker Cover - Black 18-266
ARLEN NESS
MSRP: $699.95Now: $629.96Was: $699.95Carved from 6061 T-6 forged billet aluminum, Drastically changes the look of your engine, Replaces OEM top rocker box covers, Includes necessary gaskets and hardware09401911- SKU:
- 09401911
- Availability:
- Ships Same Business Day
- Weight:
- 5.71 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- BLACK
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
MSRP: $699.95Now: $629.96Was: $699.95Qty in Cart: 0Quantity:Price:MSRP: $699.95Now: $629.96Was: $699.95Subtotal: -
On Sale
ARLEN NESS Point Cover - Black 700-008
ARLEN NESS
MSRP: $59.95Now: $53.96Was: $59.95A quality point cover does more than protect your ignition components—it completes your engine's aesthetic while safeguarding critical internals from contamination and debris. The ARLEN NESS Point Cover delivers a clean, finished look that matches...09401913- SKU:
- 09401913
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- MACHINED
- TYPE:
- POINTS
- MATERIAL:
- 6061 T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- STYLE:
- 10 GAUGE
MSRP: $59.95Now: $53.96Was: $59.95 -
On Sale
ARLEN NESS Point Cover - Blue 700-011
ARLEN NESS
MSRP: $69.95Now: $62.96Was: $69.95A quality point cover does more than protect your ignition system—it completes the aesthetic of your engine while safeguarding critical components from debris and moisture. The ARLEN NESS Point Cover delivers OEM-level durability with the custom chrome...09401914- SKU:
- 09401914
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- COLOR/FINISH:
- MACHINED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
MSRP: $69.95Now: $62.96Was: $69.95 -
On Sale
ARLEN NESS Point Cover - Gold 700-012
ARLEN NESS
MSRP: $69.95Now: $62.96Was: $69.95A quality point cover protects your ignition system while adding visual refinement to your engine bay. The ARLEN NESS Gold Point Cover delivers durability and aesthetic appeal in one bolt-on component, making it an essential upgrade for riders who demand...09401915- SKU:
- 09401915
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- COLOR/FINISH:
- GOLD
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- COLOR/FINISH:
- MACHINED
- UNITS:
- EACH
MSRP: $69.95Now: $62.96Was: $69.95Qty in Cart: 0Quantity:Price:MSRP: $69.95Now: $62.96Was: $69.95Subtotal: -
On Sale
ARLEN NESS Point Cover - Orange 700-013
ARLEN NESS
MSRP: $69.95Now: $62.96Was: $69.95A quality point cover serves as both a protective barrier and a visual statement on your engine. The ARLEN NESS Point Cover delivers precision machining with OEM-level fit while elevating your bike's aesthetic with its distinctive orange finish and...09401916- SKU:
- 09401916
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- COVER
MSRP: $69.95Now: $62.96Was: $69.95Qty in Cart: 0Quantity:Price:MSRP: $69.95Now: $62.96Was: $69.95Subtotal:
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Engine Covers
- Compatibility: Ensure covers fit your Harley's engine type (e.g., Twin Cam 1999-2017, M8, Evo, Shovel) and model (e.g., Road King, Softail, Sportster). Use the vehicle selector for year-specific matches (e.g., Twin Cam for Trask Assault, M8 for Slyfox timing) to avoid mounting issues.
- Type of Use: For street riding or custom aesthetics, opt for cam/point covers with aggressive designs; touring benefits from durable rocker/spark plug covers for protection and style in varied conditions.
- Components and Upgrades: Select cam covers (e.g., Assault/grooved), point covers (dish/finned), timing covers (matte carbon), rocker box covers (polished/chrome), or spark plug covers (finned). Focus on hardware inclusion and finishes for easy upgrades.
- Brand and Quality: Choose Trask for Assault series, Rough Crafts for grooved designs, Thrashin Supply Co. for dish point covers, Drag Specialties for rocker/spark plug options, Pro-One Perf. Mfg. for ball-milled point covers, Slyfox for matte carbon timing, Joker Machine for finned point covers, or Feuling for 5-hole point covers. Prioritize billet aluminum or forged billet for durability and corrosion resistance.
- Installation and Cost: Most are bolt-on with included hardware (e.g., stainless screws); prices range from $54.95 for point covers to $821.89 for rocker box sets—factor in made-in-USA quality and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these engine covers support? Covers support models with Twin Cam (1999-2017), M8, Evo, Shovel, and Sportster engines—use the year/make/model filter for exact compatibility.
- How do cam covers improve engine aesthetics? Designs like Trask Assault with transparent windows or Rough Crafts grooved provide custom looks while allowing internal viewing.
- What finishes are available for covers? Options include chrome, black (anodized/powder coat), polished, raw/machined, or matte carbon fiber for style matching your build.
- Do these covers include installation hardware? Yes, most come with stainless steel fasteners or screws for easy bolt-on installation.
- What if a cover doesn't fit my Harley? Verify engine type, year, and design (e.g., 5-hole for point covers) before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore gaskets, pistons, or cams in the Harley engine category to complement your cover upgrade for a complete refresh.
