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 Clutch Release Kit VT-18-3212-BC3
DRAG SPECIALTIES
$42.35A worn or damaged clutch release mechanism directly impacts your ability to achieve consistent, smooth gear engagement—critical whether you're tuning on the dyno or competing at the strip. This DRAG SPECIALTIES kit supplies all internal components needed...DS194016- SKU:
- DS194016
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PRODUCT NAME:
- RELEASE KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RELEASE
$42.35Qty in Cart: 0Quantity:Price:$42.35Subtotal: -
DRAG SPECIALTIES Kick Pedal Bolt Kit DS240985
DRAG SPECIALTIES
$8.43A worn or damaged kick pedal assembly compromises both safety and control on the road. This complete bolt kit from DRAG SPECIALTIES gives you everything needed to restore secure pedal operation with OEM-quality components that won't loosen or fail under...DS240985- SKU:
- DS240985
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- TYPE:
- KICK PEDAL
- PRODUCT NAME:
- BOLT KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$8.43 -
DRAG SPECIALTIES Primary Chain - 428-2 x 82 C226T3/002
DRAG SPECIALTIES
$149.41Primary chains are the foundation of reliable power transfer in high-performance applications, and premature elongation is one of the most common failures that sideline engines. The DRAG Specialties 428-2 x 82 C226T3/002 is pre-loaded from the factory to...11200283- SKU:
- 11200283
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- PRIMARY CHAIN
- RIDING STYLE:
- STREET
- NUMBER OF LINKS:
- 82
$149.41 -
DRAG SPECIALTIES '91-'19 Sportster Clutch Hub 64141
DRAG SPECIALTIES
$114.95A worn or damaged clutch hub compromises power delivery and creates inconsistent engagement—issues that compound quickly in high-demand riding. This Drag Specialties inner clutch hub features a reinforced insert designed to handle repeated thermal...11321119- SKU:
- 11321119
- Availability:
- Ships Same Business Day
- Weight:
- 2.01 LBS
- TYPE:
- CLUTCH
- PRODUCT NAME:
- INNER HUB
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$114.95Qty in Cart: 0Quantity:Price:$114.95Subtotal: -
DRAG SPECIALTIES Kickstarter Kit 290261-BX-LB2
DRAG SPECIALTIES
$314.77A reliable kickstarter is non-negotiable for vintage and kick-start equipped bikes—especially when original components wear out or fail mid-season. This Drag Specialties kit delivers OEM-equivalent quality with fully chromed components that match your...DS241027- SKU:
- DS241027
- Availability:
- Ships Same Business Day
- Weight:
- 7.81 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- KICKSTARTER KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- 4-SPEED
$314.77Qty in Cart: 0Quantity:Price:$314.77Subtotal: -
DRAG SPECIALTIES Rail Kick Pedal 17-0953JD-BC2
DRAG SPECIALTIES
$57.19A quality kick pedal is essential for consistent clutch control during high-RPM launches and gear transitions. This DRAG SPECIALTIES Rail Kick Pedal integrates seamlessly with rail-based pedal assemblies, delivering reliable engagement and smooth...DS241055- SKU:
- DS241055
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- KICK PEDAL
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- TYPE:
- BOLT-ON
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$57.19 -
DRAG SPECIALTIES Rear Sprocket Spacer - .30" 26-0128-S30-SC2
DRAG SPECIALTIES
$19.21When you upgrade to a wider rear tire, your sprocket and belt pulley alignment becomes critical—and that's where this spacer shim steps in. The DRAG SPECIALTIES rear sprocket spacer maintains proper offset geometry, ensuring even tire wear and consistent...78055052- SKU:
- 78055052
- Availability:
- Ships Same Business Day
- Weight:
- 0.92 LBS
- COLOR/FINISH:
- ZINC
- MATERIAL:
- STEEL
- TYPE:
- PULLEY
- WIDTH IMPERIAL:
- 0.300'
- PRODUCT NAME:
- SPACER
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- SPROCKET
- UNITS:
- EACH
$19.21 -
DRAG SPECIALTIES Sprocket Cover - Chrome - '86-'90 XL 301780-HC12
DRAG SPECIALTIES
$81.95A sprocket cover protects your primary drive system from road debris, moisture, and accidental contact while maintaining clean aesthetics on your cruiser. Cast aluminum construction offers lightweight durability without adding unnecessary weight to your...DS325288- SKU:
- DS325288
- Availability:
- Ships Same Business Day
- Weight:
- 2.06 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- SPROCKET
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$81.95 -
DRAG SPECIALTIES Chrome Inspection Cover 33-0007H-BC216
DRAG SPECIALTIES
$30.95If you're building a motorcycle that reflects your personal style, details matter. This chrome inspection cover transforms a utilitarian engine component into a visual statement, combining functional protection with aesthetic appeal. The recessed eagle...DS325291- SKU:
- DS325291
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- COLOR/FINISH:
- CHROME
- STYLE:
- EAGLE SPIRIT
- UNITS:
- EACH
- MOUNTING STYLE:
- 4 HOLE
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
- PRODUCT NAME:
- INSPECTION COVER
$30.95Qty in Cart: 0Quantity:Price:$30.95Subtotal: -
DRAG SPECIALTIES Chrome Mousetrap Eliminator Bracket 13603
DRAG SPECIALTIES
$23.27If you're running a Knucklehead or Flathead and want to eliminate the outdated mousetrap eliminator bracket, this adapter gives you access to the superior cable routing and reliability of 68-84 Big Twin clutch cables. Swapping to modern cable geometry...DS325336- SKU:
- DS325336
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- ELIMINATOR BRACKET
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- MATERIAL:
- STEEL
$23.27 -
DRAG SPECIALTIES Transmission Cover Bushings 290315-HC3
DRAG SPECIALTIES
$15.95Transmission cover bushings are critical wear items that absorb vibration and prevent metal-to-metal contact between your transmission housing and engine block. Over time, worn or deteriorated bushings allow excessive movement, leading to noise,...DS325382- SKU:
- DS325382
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- KICKSTARTER CRANK
- RIDING STYLE:
- STREET
- TRANSMISSION TYPE:
- 4 SPEED
- PRODUCT NAME:
- BUSHING
- UNITS:
- KIT
$15.95 -
DRAG SPECIALTIES Transmission End Cover - Chrome - '36-'86 Big Twin 292070-BX-LB2
DRAG SPECIALTIES
$77.95A worn or damaged transmission end cover compromises both the appearance and integrity of your Big Twin's drivetrain. This Drag Specialties replacement restores factory protection while delivering that classic chrome finish that complements vintage and...DS325521- SKU:
- DS325521
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION END
- MOUNTING STYLE:
- 8 HOLE
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$77.95 -
DRAG SPECIALTIES Compensating Sprocket Nut - '99-'06 346216
DRAG SPECIALTIES
$22.42A worn or damaged compensating sprocket nut compromises drivetrain smoothness and can lead to increased vibration and premature wear on surrounding components. This OEM-equivalent replacement restores proper sprocket engagement and eliminates the...20173461- SKU:
- 20173461
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- NUT
- TYPE:
- COMPENSATING SPROCKET
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$22.42 -
DRAG SPECIALTIES Rear Pulley Spacer - .375" 26-0128-S38
DRAG SPECIALTIES
$19.21When you're running a wider rear tire, your sprocket or belt pulley needs proper clearance to avoid rubbing and maintain alignment. The DRAG SPECIALTIES Rear Pulley Spacer provides the precision offset you need without modifying your frame or swingarm. A...12010599- SKU:
- 12010599
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- ZINC
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPACER
- UNITS:
- EACH
- TYPE:
- PULLEY
- TYPE:
- SPROCKET
- WIDTH IMPERIAL:
- 0.375'
$19.21 -
DRAG SPECIALTIES Organic Plates 1131-0424
DRAG SPECIALTIES
$136.69If you're running a high-performance clutch system, your friction plates are working at the absolute edge of thermal limits. DRAG SPECIALTIES Organic Plates deliver consistent, predictable engagement under extreme heat—whether you're pulling hard on the...11310424- SKU:
- 11310424
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MATERIAL:
- ORGANIC
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- STYLE:
- OEM REPLACEMENT
- UNITS:
- SET OF 9
- PRODUCT NAME:
- FRICTION PLATE
$136.69 -
DRAG SPECIALTIES Rear Drive Belt - 139-Tooth - 1 1/2" BDL SPC-139
DRAG SPECIALTIES
$337.57A reliable rear drive belt is non-negotiable for consistent power transfer and peak performance. This DRAG SPECIALTIES belt leverages carbon fiber reinforcement and proprietary Falcon SPC™ engineering to deliver 33% greater tensile strength than...12040062- SKU:
- 12040062
- Availability:
- Ships Same Business Day
- Weight:
- 2.43 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
- TOOTH COUNT:
- 139
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
$337.57 -
DRAG SPECIALTIES 530 Series - O-Ring - Connecting Link - Clip DSCL530PO
DRAG SPECIALTIES
$9.63A worn or damaged connecting link compromises your entire chain's integrity, risking catastrophic failure at high RPM or under load. The Drag Specialties 530 Series O-Ring Connecting Link delivers reliable clip-style engagement and superior retention,...12250175- SKU:
- 12250175
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- CHAIN SIZE:
- 530
- PRODUCT NAME:
- CONNECTING LINK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MASTER LINK CONNECTOR:
- CLIP
- NUMBER OF LINKS:
- 1
- SEAL TYPE:
- O-RING
- TYPE:
- CLIP
- COLOR/FINISH:
- CHROME
$9.63 -
DRAG SPECIALTIES Clutch Basket 148400
DRAG SPECIALTIES
$433.49A worn or damaged clutch basket compromises power transfer and can leave you stranded mid-season. The DRAG SPECIALTIES Clutch Basket 148400 is a direct replacement that restores reliable engagement and smooth shifts, whether you're rebuilding after a...11320697- SKU:
- 11320697
- Availability:
- Ships Same Business Day
- Weight:
- 9.70 LBS
- PRODUCT NAME:
- CLUTCH SHELL
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$433.49Qty in Cart: 0Quantity:Price:$433.49Subtotal: -
DRAG SPECIALTIES Clutch Hub 148420
DRAG SPECIALTIES
$194.99A worn or failing clutch hub compromises power transfer and creates unpredictable engagement—critical failures on the track or street. The DRAG SPECIALTIES Clutch Hub 148420 features a reinforced insert design that eliminates compliance issues and...11320698- SKU:
- 11320698
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- INNER HUB
$194.99 -
DRAG SPECIALTIES Rear Drive Belt - 135-Tooth - 1 1/8" BDL SPC-135-118
DRAG SPECIALTIES
$311.15A reliable rear drive belt is critical to consistent power delivery and dragstrip performance. This Drag Specialties unit leverages carbon fiber reinforcement and Goodyear's Falcon SPC™ engineering to deliver 33% greater tensile strength than standard...12040055- SKU:
- 12040055
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- TOOTH COUNT:
- 135
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
$311.15
