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
-
TRASK Assault Derby Cover - Gloss Black TM-0040BK
TRASK
$279.95TRASK Assault Derby Cover Gloss Black TM-0040BKBillet machined T6061 aluminum with acrylic see through window, Matches Assault series air cleaners and cam covers, Made in the U.S.A., Acrylic see-through window11070640- SKU:
- 11070640
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MODEL:
- ASSAULT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GLOSS BLACK
$279.95 -
TRASK Assault Derby Cover - Chrome TM-0040CH
TRASK
$279.95TRASK Assault Derby Cover Chrome TM-0040CHBillet machined T6061 aluminum with acrylic see through window, Matches Assault series air cleaners and cam covers, Made in the U.S.A., Acrylic see-through window11070641- SKU:
- 11070641
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- MODEL:
- ASSAULT
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$279.95 -
TRASK Assault Derby Cover - Raw TM-0040R
TRASK
$279.95TRASK Assault Derby Cover Raw TM-0040RBillet machined T6061 aluminum with acrylic see through window, Matches Assault series air cleaners and cam covers, Made in the U.S.A., Acrylic see-through window11070642- SKU:
- 11070642
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- RAW
- MODEL:
- ASSAULT
$279.95 -
TRASK Clutch Actuator Cover - Chrome - Hydraulic TM-2039CH
TRASK
$399.95TRASK Clutch Actuator Cover Chrome Hydraulic TM-2039CHBillet 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...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
$399.95 -
TRASK Clutch Actuator Cover - Black - Hydraulic TM-2039BK
TRASK
$399.95TRASK Clutch Actuator Cover Black Hydraulic TM-2039BKBillet 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...11070407- SKU:
- 11070407
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- COLOR/FINISH:
- POWDER-COATED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- TRANSMISSION TYPE:
- 6-SPEED
- TYPE:
- TRANSMISSION SIDE
$399.95 -
TRASK COVER DERBY ASLT CHROME TM-0042CH
TRASK
$279.95TRASK COVER DERBY ASLT CHROME TM-0042CHTRASK COVER DERBY ASLT CHROME11070684- SKU:
- 11070684
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
$279.95 -
TRASK COVER DERBY ASLT GLS BLK TM-0042BK
TRASK
$279.95TRASK COVER DERBY ASLT GLS BLK TM-0042BKTRASK COVER DERBY ASLT GLS BLK11070685- SKU:
- 11070685
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
$279.95 -
TRASK Assault Derby Cover - Gloss Black TM-0041BK
TRASK
$279.95TRASK Assault Derby Cover Gloss Black TM-0041BKBillet machined T6061 aluminum with acrylic see-through window, Matches Assault series air cleaners and cam covers, Made in the U.S.A., Acrylic see-through window11070637- SKU:
- 11070637
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- MODEL:
- ASSAULT
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- COLOR/FINISH:
- GLOSS BLACK
$279.95 -
THRASHIN SUPPLY CO. M8 - Derby Cover Finned - Chrome TSC-3017-3
THRASHIN SUPPLY CO.
$179.95THRASHIN SUPPLY CO. M8 Derby Cover Finned Chrome TSC-3017-3Made from machined 6061 billet aluminum, Uses stock gasket and hardware, Made in America11070695- SKU:
- 11070695
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MOUNTING STYLE:
- 5 HOLE
- PRODUCT NAME:
- DERBY COVER
- MATERIAL:
- 6061 BILLET ALUMINUM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- UNITS:
- EACH
$179.95 -
THRASHIN SUPPLY CO. Derby Cover - Polished - Classic TSC-3000-2
THRASHIN SUPPLY CO.
$119.95THRASHIN SUPPLY CO. Derby Cover Polished Classic TSC-3000-26061 billet aluminum construction, Includes gasket, Made in U.S.A.11070584- SKU:
- 11070584
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- 6061 BILLET ALUMINUM
- PRODUCT NAME:
- DERBY COVER
- STYLE:
- CLASSIC
- UNITS:
- EACH
- MOUNTING STYLE:
- 3 HOLE
$119.95 -
THRASHIN SUPPLY CO. Derby Cover - Black - Classic TSC-3000-4
THRASHIN SUPPLY CO.
$119.95THRASHIN SUPPLY CO. Derby Cover Black Classic TSC-3000-46061 billet aluminum construction, Includes gasket, Made in U.S.A.11070585- SKU:
- 11070585
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 3 HOLE
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 BILLET ALUMINUM
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- STYLE:
- CLASSIC
$119.95 -
THRASHIN SUPPLY CO. Derby Cover - Polished - Classic TSC-3010-2
THRASHIN SUPPLY CO.
$129.95THRASHIN SUPPLY CO. Derby Cover Polished Classic TSC-3010-26061 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
$479.00BAKER DRIVETRAIN Transmission Cover DD7-10602-ALow-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...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
$479.00Qty in Cart: 0Quantity:Price:$479.00Subtotal: -
BAKER DRIVETRAIN Dipstick 13002-56-A
BAKER DRIVETRAIN
$29.00BAKER DRIVETRAIN Dipstick 13002-56-AEnds the problem of the OEM dipstick breaking off and going through your gears, Larger radius on the stem to the head for more strength, Polished with O-ring, Made in the U.S.A.11070690- SKU:
- 11070690
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- DIPSTICK
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- POLISHED
- UNITS:
- KIT
$29.00 -
BARNETT '99-'06 Big Twin Chrome/Clear Derby Cover 343-30-43006
BARNETT
$287.71BARNETT '99-'06 Big Twin Chrome/Clear Derby Cover 343-30-43006Designed to fit OEM primary covers on select Harley Davidson Big Twins, Features a clear 0.25" thick polycarbonate window to your clutch, Window is scratch and discoloration resistant and is...11070438- SKU:
- 11070438
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SCORPION SERIES
- MOUNTING STYLE:
- 5 HOLE
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$287.71 -
FEULING OIL PUMP CORP. American Derby Cover - Polished 9151
FEULING OIL PUMP CORP.
$159.95FEULING OIL PUMP CORP. American Derby Cover Polished 9151Dress 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
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal: -
FEULING OIL PUMP CORP. American Derby Cover - Black 9154
FEULING OIL PUMP CORP.
$159.95FEULING OIL PUMP CORP. American Derby Cover Black 9154Dress 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 Logo11070614- SKU:
- 11070614
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- TYPE:
- DERBY
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$159.95 -
DRAG SPECIALTIES Outer Primary Cover - Chrome - Narrow Profile 77957
DRAG SPECIALTIES
$463.45DRAG SPECIALTIES Outer Primary Cover Chrome Narrow Profile 77957Die-cast aluminum construction, Hardware and bushing not included11070536- SKU:
- 11070536
- Availability:
- Ships Same Business Day
- Weight:
- 6.45 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- NARROW
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
$463.45 -
DRAG SPECIALTIES Outer Primary Cover - Black - Narrow Profile 77957B
DRAG SPECIALTIES
$472.72DRAG SPECIALTIES Outer Primary Cover Black Narrow Profile 77957BDie-cast aluminum construction, Hardware and bushing not included11070537- SKU:
- 11070537
- Availability:
- Ships Same Business Day
- Weight:
- 6.15 LBS
- STYLE:
- NARROW
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- OUTER PRIMARY
- UNITS:
- EACH
- COLOR/FINISH:
- SATIN BLACK
$472.72 -
DRAG SPECIALTIES Primary Cover - Chrome 63134
DRAG SPECIALTIES
$376.93DRAG SPECIALTIES Primary Cover Chrome 63134Die-cast aluminum construction, Inspection covers and derby covers are available separately11070538- SKU:
- 11070538
- Availability:
- Ships Same Business Day
- Weight:
- 5.85 LBS
- TYPE:
- PRIMARY
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$376.93
