Harley Transmission Cases and Covers
Harley Bike Transmission Cases & Covers at JJ Motorsports
Upgrade the look and function of your Harley’s transmission with premium cases and covers from JJ Motorsports, featuring chrome billet designs and conversion plates for classic style and perfect fit on Big Twin, Evo, and Twin Cam models. These durable parts protect internals while adding custom flair.
Shop Paughco and Arlen Ness transmission cases and covers for proven quality. Explore related categories such as Harley drivetrain for clutches and belts, or Harley for primary covers and derby covers to complete your custom build.
Top Harley Transmission Cases & Covers
- Paughco Plate 5-4 Speed Conversion 218-1 – Conversion plate for 5-speed in 4-speed cases; perfect for ratchet-top and early Big Twin builds.
- Arlen Ness Transmission Side Cover Chrome Cable 03-812 – Chrome 10-Gauge side cover for cable-clutch Twin Cam; clean look with hidden hardware.
- Arlen Ness Chrome 10-Gauge Top Transmission Cover 03-852 – Chrome top cover with 10-Gauge styling; matches Ness derby and primary covers.
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
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PAUGHCO Transmission Plate - OE Type 4-Speed 218
PAUGHCO
$151.95Will accommodate most Big Twins with four-speed transmissions from stock Knuckleheads to modern customs, Heavy-duty construction, For 4-speed transmissions in Paughco standard width swingarm and rigid frames and stock HD swingarm and rigid frames (OEM’s...11050011- SKU:
- 11050011
- Availability:
- Ships Same Business Day
- Weight:
- 3.74 LBS
- MATERIAL:
- STEEL
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TRANSMISSION TYPE:
- 4-SPEED
- UNITS:
- EACH
- PRODUCT NAME:
- MOUNTING PLATE
$151.95 -
PAUGHCO Plate - 5/4 Speed Conversion 218-1
PAUGHCO
$151.95Heavy-duty construction, Will accommodate most Big Twins with four-speed transmissions from stock Knuckleheads to modern customs, Easy bolt-in application, For Paughco Easyride or stock Softail frames when using 4-speed transmissions, Made in the U.S.A.11050012- SKU:
- 11050012
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- MOUNTING PLATE
- TYPE:
- TRANSMISSION
- MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
$151.95 -
PAUGHCO Transmission Mounting Plate 218-A
PAUGHCO
$112.95Heavy-duty construction, Will accommodate most Big Twins with five-speed transmissions from stock Knuckleheads to modern customs, Easy bolt-in application, For Paughco rigid frames when using Softail 5-speed transmissions, Made in the U.S.A.11050013- SKU:
- 11050013
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- MOUNTING PLATE
- TRANSMISSION TYPE:
- 5-SPEED
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
$112.95 -
NAMZ Neutral Switch Eliminator Plug NNSE-P01
NAMZ
$55.95Highly polished, stainless steel option for customizers of all types, The 1/4" blind allen-head design uses an o-ring to seal once tightened from the inside of the trans top cover, Neutral indicator light will no longer function once installed11050236- SKU:
- 11050236
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- PLUG
- MATERIAL:
- STAINLESS STEEL
- TYPE:
- NEUTRAL SWITCH
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$55.95 -
DRAG SPECIALTIES Transmission Mounting Plate 74728
DRAG SPECIALTIES
$38.06Chrome transmission mounting plate for 5-speedsDS243621- SKU:
- DS243621
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- MOUNTING PLATE
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$38.06 -
GARDNER-WESTCOTT Transmission Oil Fill Plug C-80-14
GARDNER-WESTCOTT
$21.95Show-chromed Allen-head plug includes oil level dipstick and O-ring, Made in the U.S.A.DS193860- SKU:
- DS193860
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- FILL PLUG
- TRANSMISSION TYPE:
- 5-SPEED
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$21.95 -
On Sale
COVINGTONS Transmission Cover C1365-B
COVINGTONS
MSRP: $381.95Now: $244.00Was: $381.95CNC-machined from billet aluminum, Direct bolt-on replacement for the stock cover, Made in the U.S.A.11050255- SKU:
- 11050255
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- STYLE:
- DIMPLED
- UNITS:
- EACH
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- TRANSMISSION TYPE:
- HYDRAULIC
MSRP: $381.95Now: $244.00Was: $381.95 -
COVINGTONS Transmission Cover C1372-C
COVINGTONS
$317.95CNC machined from billet aluminum, Direct bolt-on replacement for the stock cover, Made in the U.S.A.11050206- SKU:
- 11050206
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- COVER
- TRANSMISSION TYPE:
- MECHANICAL
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- STYLE:
- SMOOTH
- COLOR/FINISH:
- CHROME
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION TOP
$317.95 -
COVINGTONS Transmission Cover C1371-C
COVINGTONS
$317.95CNC machined from billet aluminum, Direct bolt-on replacement for the stock cover, Made in the U.S.A.11050145- SKU:
- 11050145
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MOUNTING STYLE:
- 6 HOLE
- STYLE:
- DIMPLED
- TYPE:
- TRANSMISSION TOP
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- TRANSMISSION TYPE:
- 6-SPEED
$317.95 -
ARLEN NESS Transmission Side Cover - Chrome - Cable 03-812
ARLEN NESS
$181.95Carved from 6061 T-6 billet aluminum, Replaces OEM cover, Includes necessary gaskets and hardware11050107- SKU:
- 11050107
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- MOUNTING STYLE:
- 6 HOLE
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- SIDE COVER
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
$181.95 -
ARLEN NESS Black 10 Gauge Top Transmission Cover 03-853
ARLEN NESS
$179.95Machined from billet aluminum, Includes necessary gasket and hardware11050112- SKU:
- 11050112
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- BLACK
- MODEL:
- 10 GAUGE
- MOUNTING STYLE:
- 6 HOLE
- PRODUCT NAME:
- TOP COVER
- TYPE:
- TRANSMISSION
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
$179.95 -
On Sale
ARLEN NESS Transmission Cover - Black 03-854
ARLEN NESS
MSRP: $179.95Now: $163.75Was: $179.95Replaces OEM transmission side cover, Includes necessary gaskets and hardware11050246- SKU:
- 11050246
- Availability:
- Ships Same Business Day
- Weight:
- 3.60 LBS
- UNITS:
- EACH
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- STYLE:
- 10 GAUGE
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK ANODIZED
- MATERIAL:
- 6061 T-6 ALUMINUM
- TYPE:
- TRANSMISSION
MSRP: $179.95Now: $163.75Was: $179.95 -
ARLEN NESS Transmission Cover - Black 03-864
ARLEN NESS
$209.95Replaces OEM transmission side cover, Includes necessary gaskets and hardware11050248- SKU:
- 11050248
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK ANODIZED
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
$209.95 -
ARLEN NESS Transmission Side Cover - Black - Cable 03-813
ARLEN NESS
$181.95Carved from 6061 T-6 billet aluminum, Replaces OEM cover, Includes necessary gaskets and hardware11050108- SKU:
- 11050108
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 6 HOLE
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- SIDE COVER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$181.95 -
ARLEN NESS Transmission Cover - Chrome 03-822
ARLEN NESS
$181.95Replaces the OEM cover, Includes necessary gaskets and hardware, Matching transmission top covers sold separately, Hydraulic style cover mounts on top of OEM hydraulic unit found on '14-up Touring models with fairing, Cable style cover replaces the OEM...11050109- SKU:
- 11050109
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
$181.95 -
ARLEN NESS Chrome 10 Gauge Top Transmission Cover 03-852
ARLEN NESS
$181.95Machined from billet aluminum, Includes necessary gasket and hardware11050111- SKU:
- 11050111
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
- PRODUCT NAME:
- TOP COVER
- TYPE:
- TRANSMISSION
- UNITS:
- EACH
$181.95 -
On Sale
ARLEN NESS Transmission Cover - Titanium 03-855
ARLEN NESS
MSRP: $179.95Now: $163.75Was: $179.95Replaces OEM transmission side cover, Includes necessary gaskets and hardware11050247- SKU:
- 11050247
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- TITANIUM ANODIZED
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MOUNTING STYLE:
- 6 HOLE
- RIDING STYLE:
- STREET
MSRP: $179.95Now: $163.75Was: $179.95 -
On Sale
ARLEN NESS Transmission Cover - Titanium 03-865
ARLEN NESS
MSRP: $209.95Now: $191.05Was: $209.95Replaces OEM transmission side cover, Includes necessary gaskets and hardware11050249- SKU:
- 11050249
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- TITANIUM ANODIZED
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- 10 GAUGE
- TYPE:
- TRANSMISSION
- MOUNTING STYLE:
- 6 HOLE
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
MSRP: $209.95Now: $191.05Was: $209.95 -
EASTERN MOTORCYCLE PARTS Oil Pump Pinion Gear - Big Twin A-26349-73A
EASTERN MOTORCYCLE PARTS
$49.95Made in the U.S.A.DS194007- SKU:
- DS194007
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- DRIVE GEAR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- OIL PUMP
$49.95 -
EASTERN MOTORCYCLE PARTS Drain Plug A-60348-65B
EASTERN MOTORCYCLE PARTS
$12.95Zinc finish, Made in the U.S.A.11050091- SKU:
- 11050091
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- FEATURES:
- MAGNETIC
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- DRAIN PLUG
- UNITS:
- EACH
- COLOR/FINISH:
- ZINC
$12.95
