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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BARNETT Scorpion Clutch Plates 306-32-20443
BARNETT
$278.66Made in the U.S.A.11312446- SKU:
- 11312446
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- FRICTION PLATE MATERIAL:
- DUPONT™ KEVLAR®
- MODEL:
- SCORPION
- UNITS:
- SET
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- PRODUCT NAME:
- PLATE SET
- STYLE:
- WET
- DRIVE PLATE MATERIAL:
- STEEL
$278.66 -
BARNETT Heavy Duty Clutch Spring 502-00-01008
BARNETT
$42.67Heavy-duty springs approximately 20% stronger than OEM, Recommended for competition use, Made in the U.S.A.DS199218- SKU:
- DS199218
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- SPRING MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SPRING
- STYLE:
- DIAPHRAGM SPRING
- UNITS:
- EACH
$42.67 -
BARNETT Clutch Friction Plates 302-30-20011
BARNETT
$170.64Designed to perform under extreme heat conditions, Allow smooth, precise shifting, 100% asbestos free, Carbon fiber plates have high static and dynamic coefficient of friction for smooth positive engagement and release, Aramid plates have higher density...DS223737- SKU:
- DS223737
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- FRICTION PLATE MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- FRICTION PLATE SET
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- UNITS:
- SET OF 8
$170.64 -
BARNETT Outer Drive Plate - '71-'E84 XL 301-30-10008
BARNETT
$13.65Alloy friction plate, bonded on one side only, Made in the U.S.A.DS223756- SKU:
- DS223756
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- ALLOY
- PRODUCT NAME:
- FRICTION PLATE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$13.65 -
BARNETT Clutch Spring 502-00-01004
BARNETT
$42.67Standard replacement spring, Made in the U.S.A.DS223355- SKU:
- DS223355
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- STREET
- SPRING MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- RAW
- STYLE:
- DIAPHRAGM SPRING
- UNITS:
- EACH
- PRODUCT NAME:
- SPRING
- TYPE:
- CLUTCH
$42.67 -
ALTO PRODUCTS Steel Plate 095781UP1
ALTO PRODUCTS
$9.95Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Precision-made steel plates, Meets or exceeds OEM specifications, Made in the U.S.A.11310455- SKU:
- 11310455
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- DRIVE PLATE MATERIAL:
- STEEL
- PRODUCT NAME:
- CLUTCH PLATE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$9.95Qty in Cart: 0Quantity:Price:$9.95Subtotal: -
ALTO PRODUCTS Steel Plate 095711-120UP1
ALTO PRODUCTS
$8.95Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Precision-made steel plates, Meets or exceeds OEM specifications, Made in the U.S.A.11310456- SKU:
- 11310456
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- PRODUCT NAME:
- CLUTCH PLATE
- UNITS:
- EACH
- DRIVE PLATE MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
$8.95 -
ALTO PRODUCTS Steel Plate 095721-120UP1
ALTO PRODUCTS
$8.95Increased surface area for decreased slipping, Increases holding while decreasing heat generation, Precision-made steel plates, Meets or exceeds OEM specifications, Made in the U.S.A.11310458- SKU:
- 11310458
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CLUTCH PLATE
- DRIVE PLATE MATERIAL:
- STEEL
$8.95 -
ANDREWS 5-Speed Mainshaft 296910
ANDREWS
$342.95Sold individually, unless noted.DS199429- SKU:
- DS199429
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- UNITS:
- EACH
- STYLE:
- 5 SPEED
- STYLE:
- BELT DRIVE
- PRODUCT NAME:
- MAINSHAFT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$342.95 -
ANDREWS Main Drive Gear With Belt Drive 296591
ANDREWS
$288.95Sold individually, unless noted.DS199457- SKU:
- DS199457
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- PRODUCT NAME:
- GEAR
- UNITS:
- EACH
- TOOTH COUNT:
- 32
- STYLE:
- BELT DRIVE
- TYPE:
- MAIN DRIVE
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD RATIO
$288.95 -
KIBBLEWHITE Heavy Duty Clutch Springs 20-0789
KIBBLEWHITE
$49.20If you're experiencing clutch slippage under hard acceleration or running a modified engine with increased output, stock clutch springs won't cut it. KIBBLEWHITE Heavy Duty Clutch Springs deliver a 20% pressure increase over OEM specifications, ensuring...DS199209- SKU:
- DS199209
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPRING SET
- TYPE:
- CLUTCH
- UNITS:
- SET
$49.20 -
JAMES GASKET Retaining Ring 11161
JAMES GASKET
$8.95Proper valve train geometry depends on precision component tolerances, and a worn or damaged retaining ring compromises both performance and engine longevity. The JAMES GASKET Retaining Ring 11161 ensures secure fastening of critical valve components,...11060042- SKU:
- 11060042
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- RETAINING RING
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- FIFTH GEAR
$8.95 -
JAMES GASKET Inner Primary Lock Tabs 7402
JAMES GASKET
$9.40Inner primary bolts experience constant vibration and thermal cycling, making bolt loosening a genuine reliability concern on high-performance engines. JAMES GASKET Inner Primary Lock Tabs prevent catastrophic fastener failure by maintaining bolt tension...11320395- SKU:
- 11320395
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- PRODUCT NAME:
- LOCK TAB
- UNITS:
- EACH
$9.40 -
JAMES GASKET Inner Primary Lock Tabs 33318-85
JAMES GASKET
$8.40Inner primary bolts are critical fastening points that experience constant vibration and stress during engine operation. Without proper locking mechanism, these bolts can loosen over time, leading to oil leaks, catastrophic engine damage, and costly...11320396- SKU:
- 11320396
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- TYPE:
- INNER PRIMARY
- PRODUCT NAME:
- LOCK TAB
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$8.40 -
JOKER MACHINE Pulley Cover - Black 30-800-1
JOKER MACHINE
$229.95A quality pulley cover protects your engine bay's appearance while maintaining clean aesthetics—especially critical if you're running a custom or high-visibility engine setup. The JOKER MACHINE design combines functional ventilation cutouts with...12010851- SKU:
- 12010851
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- MATERIAL:
- 6061 BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$229.95 -
JOKER MACHINE Sprocket Cover - XL - Black 10-810B
JOKER MACHINE
$193.95If you're serious about weight reduction and visual impact, a billet aluminum sprocket cover delivers both without compromise. This Joker Machine piece replaces the heavy cast OEM component with precision-machined 6061 T-6 aluminum, cutting unnecessary...12010503- SKU:
- 12010503
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MOUNTING POSITION:
- FRONT
- TYPE:
- PULLEY
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
$193.95Qty in Cart: 0Quantity:Price:$193.95Subtotal: -
JOKER MACHINE Sprocket Cover - XL - Clear 10-810S
JOKER MACHINE
$193.95Stock sprocket covers add unnecessary weight and lack the refined finish that separates a purpose-built machine from the ordinary. The JOKER MACHINE XL Sprocket Cover replaces that heavy cast piece with a precision-engineered billet component that...12010504- SKU:
- 12010504
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- MATERIAL:
- 6061-T6 ALUMINUM
- UNITS:
- EACH
- COLOR/FINISH:
- RAW
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- FRONT
- TYPE:
- PULLEY
$193.95 -
JOKER MACHINE Inspection Cover - Black - Finned 06-95-1
JOKER MACHINE
$98.95Engine bay aesthetics matter when you're serious about your build. The JOKER MACHINE Inspection Cover combines functional design with the finned details that separate a thoughtfully assembled machine from an amateur effort. Whether you're running a show...11070566- SKU:
- 11070566
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- INSPECTION COVER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- STYLE:
- FINNED
$98.95 -
JOKER MACHINE Inspection Cover 10-664-1
JOKER MACHINE
$47.95A clean, professional engine bay starts with quality details—and this inspection cover delivers both aesthetics and durability. CNC-milled from 6061-T6 billet aluminum, it resists corrosion and maintains a finished look that reflects your commitment to...11070573- SKU:
- 11070573
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- MOUNTING STYLE:
- 2 HOLE
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- UNITS:
- EACH
- TYPE:
- INSPECTION
- COLOR/FINISH:
- ANODIZED
$47.95Qty in Cart: 0Quantity:Price:$47.95Subtotal: -
JOKER MACHINE Derby Cover - Black - Finned 10-690-1
JOKER MACHINE
$144.95A quality derby cover protects your engine's internal components from dirt, moisture, and debris while delivering a clean, finished look to your motorcycle's aesthetic. The JOKER MACHINE finned design combines functional ventilation with classic styling,...11070574- SKU:
- 11070574
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COLOR/FINISH:
- BLACK ANODIZED
- TYPE:
- DERBY
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- UNITS:
- EACH
$144.95
