Harley Drivetrain
Harley Bike Drivetrain Parts at JJ Motorsports
Upgrade your Harley's drivetrain for smoother power delivery and reliability with components from JJ Motorsports. Our selection includes transmission mounting plates, offset sprockets, mechanical reverse kits, starter spacers, pulley spacers, and primary covers designed for heavy-duty use, easy bolt-in installation, and enhanced performance. Compatible with Big Twins, Softail, Dyna, and more, these parts feature chrome finishes, billet aluminum, and CNC-machined steel for corrosion resistance and custom fitment.
Shop trusted brands like Paughco for primary covers and PBI for sprockets. Explore related categories such as Harley engine parts for rebuilds or Harley suspension for balanced setups.
Top Harley Drivetrain Products
- PAUGHCO Transmission Plate - OE Type 4-Speed 218 – Heavy-duty steel for Big Twins with 4-speed transmissions.
- PBI Offset Transmission Sprocket - 22-Tooth 281-22 – CNC-machined chromoly steel with 0.750" offset for 530 chains.
- MOTOR TRIKE Mechanical Reverse Kit MTTR-0025 – Lightweight aluminum with electronic cut-off for easy parking.
- TERRY COMPONENTS Starter Spacer 779000 – Billet aluminum, 1-1/2" thick for longer starters.
- PINGEL Rear Pulley Spacer 62051 – Billet aluminum for wider tires up to 142mm.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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DRAG SPECIALTIES Complete 3 Stud Hub 17-0000-BX-LB2
DRAG SPECIALTIES
$217.25A properly functioning wheel hub is fundamental to safe, reliable motorcycle operation—especially in high-performance or drag racing applications where lateral forces and sustained acceleration demand precision bearings and secure wheel attachment. The...DS195001- SKU:
- DS195001
- Availability:
- Ships Same Business Day
- Weight:
- 5.13 LBS
- RIDING STYLE:
- STREET
- STYLE:
- THREE-STUD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- HUB
- UNITS:
- EACH
$217.25 -
DRAG SPECIALTIES Complete 5 Stud Hub 17-0100A-BX-LB2
DRAG SPECIALTIES
$202.41A properly maintained wheel hub assembly is critical for safe, consistent performance on the track or street. The DRAG Specialties Complete 5 Stud Hub gives you all the components needed for a reliable, bolt-together rebuild—eliminating the guesswork and...DS195006- SKU:
- DS195006
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
- RIDING STYLE:
- STREET
- STYLE:
- FIVE-STUD
- TYPE:
- CLUTCH
- PRODUCT NAME:
- HUB
- UNITS:
- EACH
$202.41 -
DRAG SPECIALTIES Inner Primary Bearing Kit 25-3103
DRAG SPECIALTIES
$61.83A compromised primary bearing kit will introduce excess play into your drivetrain, killing efficiency and inviting catastrophic failure under load. This DRAG Specialties kit addresses the root cause with OEM-spec seals, races, and snap rings engineered...11200281- SKU:
- 11200281
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- TYPE:
- INNER PRIMARY MAINSHAFT
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$61.83Qty in Cart: 0Quantity:Price:$61.83Subtotal: -
DRAG SPECIALTIES Kick Pedal with Chrome Swivel 16-0027A SC3
DRAG SPECIALTIES
$28.57A quality kick pedal is essential for smooth, responsive footboard operation—especially in high-performance or custom builds where reliability matters. The DRAG Specialties Kick Pedal combines a wide, comfortable platform with a durable chrome-swivel...DS241001- SKU:
- DS241001
- Availability:
- Ships Same Business Day
- Weight:
- 0.84 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- KICK PEDAL
- UNITS:
- EACH
$28.57 -
DRAG SPECIALTIES Compensating Sprocket Kit 241274
DRAG SPECIALTIES
$213.30Compensating sprockets are critical for maintaining consistent chain tension and preventing premature wear on your primary drive system. This complete Drag Specialties kit gives you everything needed for a professional-grade installation without sourcing...DS195196- SKU:
- DS195196
- Availability:
- Ships Same Business Day
- Weight:
- 5.68 LBS
- TOOTH COUNT:
- 25
- UNITS:
- KIT
- TYPE:
- COMPENSATING
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
$213.30 -
DRAG SPECIALTIES Transmission Mainshaft Sprocket - 20 Tooth - XL 26-0031-20-SC2
DRAG SPECIALTIES
$47.03A worn or damaged mainshaft sprocket directly impacts your transmission's ability to deliver consistent power and maintain proper gear engagement. This DRAG SPECIALTIES replacement sprocket restores factory specifications with precision-cut teeth and...DS191032- SKU:
- DS191032
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- TOOTH COUNT:
- 20
- TYPE:
- MAINSHAFT
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- RAW
- RIDING STYLE:
- STREET
$47.03 -
DRAG SPECIALTIES Transmission Mainshaft Sprocket - 22 Tooth 26-0037-22-SC2
DRAG SPECIALTIES
$33.12A worn or damaged mainshaft sprocket compromises power delivery and can cause chain slippage under acceleration—exactly what you can't afford in a race or high-performance application. This DRAG SPECIALTIES replacement delivers OEM-quality construction...DS191060- SKU:
- DS191060
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- CHAIN SIZE:
- 530
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 22
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- MAINSHAFT
$33.12 -
DRAG SPECIALTIES Rear Sprocket Spacer - .200" 26-0125-S-SC2
DRAG SPECIALTIES
$19.21Upgrading to a wider rear tire requires proper wheel offset to maintain sprocket and pulley alignment—that's where this spacer shim comes in. The DRAG SPECIALTIES Rear Sprocket Spacer gives you the precise .200" offset needed to position your sprocket...DS199458- SKU:
- DS199458
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- COLOR/FINISH:
- ZINC
- TYPE:
- PULLEY
- PRODUCT NAME:
- SPACER
- TYPE:
- SPROCKET
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 0.200'
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$19.21 -
DRAG SPECIALTIES Rear Wheel Sprocket - 51-Tooth - Chrome 26-010751-BC648
DRAG SPECIALTIES
$115.51A worn or damaged rear sprocket directly impacts your bike's acceleration, top-end speed, and overall drivetrain efficiency. The DRAG SPECIALTIES 51-tooth rear wheel sprocket delivers OEM-equivalent performance with durable carbon steel construction,...DS325341- SKU:
- DS325341
- Availability:
- Ships Same Business Day
- Weight:
- 5.38 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- CARBON STEEL
- MOUNTING POSITION:
- REAR
- OFFSET IMPERIAL:
- 0.23'
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- TYPE:
- DRIVE
- UNITS:
- EACH
$115.51 -
DRAG SPECIALTIES Transmission Bearing 6305-2RS
DRAG SPECIALTIES
$15.11Transmission bearings are critical load-bearing components that directly impact your vehicle's power delivery, shift quality, and overall drivetrain reliability. A worn or failing bearing introduces play, noise, and potential catastrophic damage to your...11060011- SKU:
- 11060011
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- BALL BEARING
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
$15.11 -
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 combines durability with a classic domed profile that...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 Clutch Spring 27-882-HC-9
DRAG SPECIALTIES
$27.51A worn or compromised clutch spring directly impacts engagement consistency and overall drivetrain reliability—especially critical if you're running high-RPM launches or extended track sessions. The DRAG SPECIALTIES Clutch Spring 27-882-HC-9 restores...20040017- SKU:
- 20040017
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- PRODUCT NAME:
- DIAPHRAGM SPRING
- UNITS:
- EACH
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
$27.51 -
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 Chrome Inspection Cover delivers both function and...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 -
DRAG SPECIALTIES Primary Chain - #35-3 x 94 CA35-3S2N/1000
DRAG SPECIALTIES
$133.51Chain failure mid-race isn't an option. The DRAG Specialties Primary Chain #35-3 x 94 delivers the fatigue resistance and durability you need for consistent power transfer, whether you're running a cruiser or performance build. Pre-loaded construction...11200286- SKU:
- 11200286
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- NUMBER OF LINKS:
- 94
- PRODUCT NAME:
- PRIMARY CHAIN
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$133.51 -
DRAG SPECIALTIES Pressure Plate 149400
DRAG SPECIALTIES
$25.39A pressure plate is the workhorse of your clutch assembly—it clamps the friction disc against the flywheel to transmit engine power to the transmission. If yours is worn, cracked, or showing signs of slip, you're losing power delivery and risking...11320269- SKU:
- 11320269
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- PRODUCT NAME:
- PRESSURE PLATE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- CLUTCH
$25.39 -
DRAG SPECIALTIES Rear Drive Belt - 137-Tooth - 1" BDL SPC-137-1
DRAG SPECIALTIES
$258.48A rear drive belt is a critical component that directly transfers power from your engine to the rear wheel—any weakness here translates to lost performance and potential roadside failure. The DRAG SPECIALTIES Rear Drive Belt uses carbon fiber...12040061- SKU:
- 12040061
- Availability:
- Ships Same Business Day
- Weight:
- 1.97 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1'
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 137
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
$258.48 -
DRAG SPECIALTIES Inner Primary Mainshaft Bearing with Seal 25-3101
DRAG SPECIALTIES
$61.83A compromised mainshaft bearing is a ticking time bomb for primary drive reliability—this complete bearing and seal kit eliminates guesswork by delivering OEM-quality components in one package. Whether you're rebuilding after high-mileage wear or...11200162- SKU:
- 11200162
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- SEAL KIT
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY MAINSHAFT
- UNITS:
- KIT
$61.83Qty in Cart: 0Quantity:Price:$61.83Subtotal: -
DRAG SPECIALTIES Rear Drive Belt - 133-Tooth - 20mm BDL SPC-133-20
DRAG SPECIALTIES
$258.48A reliable rear drive belt is the backbone of consistent power delivery in any high-performance application. This Drag Specialties unit combines carbon-fiber reinforcement with Goodyear's Falcon SPC™ engineering to deliver 33% more tensile strength than...12040053- SKU:
- 12040053
- Availability:
- Ships Same Business Day
- Weight:
- 1.73 LBS
- PRODUCT NAME:
- BELT
- RIDING STYLE:
- STREET
- MATERIAL:
- CARBON FIBER
- TOOTH COUNT:
- 133
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
$258.48 -
DRAG SPECIALTIES Primary Chain Adjusting Shoe 15-0905-SC1
DRAG SPECIALTIES
$16.91Stock nylon chain adjusting shoes wear out quickly under sustained load and heat, compromising chain tension accuracy and increasing the risk of drivetrain failure. The DRAG SPECIALTIES Primary Chain Adjusting Shoe delivers a durable replacement that...DS192002- SKU:
- DS192002
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- NYLON
- PRODUCT NAME:
- ADJUSTING SHOE
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- UNITS:
- EACH
$16.91 -
DRAG SPECIALTIES Inner Primary Bearing Race 40-2337
DRAG SPECIALTIES
$13.81A worn or damaged inner primary bearing race compromises your entire primary drive system, leading to excessive noise, vibration, and potential catastrophic failure on the track or street. The DRAG Specialties Inner Primary Bearing Race 40-2337 restores...11200305- SKU:
- 11200305
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING
$13.81
