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
-
On Sale
BARNETT Scorpion Clutch Plates 306-32-20443
BARNETT
MSRP: $278.66Now: $250.79Was: $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
MSRP: $278.66Now: $250.79Was: $278.66 -
On Sale
BARNETT Heavy Duty Clutch Spring 502-00-01008
BARNETT
MSRP: $42.67Now: $38.40Was: $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
MSRP: $42.67Now: $38.40Was: $42.67 -
On Sale
BARNETT Clutch Friction Plates 302-30-20011
BARNETT
MSRP: $170.64Now: $153.58Was: $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...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
MSRP: $170.64Now: $153.58Was: $170.64 -
On Sale
BARNETT Outer Drive Plate - '71-'E84 XL 301-30-10008
BARNETT
MSRP: $13.65Now: $12.29Was: $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
MSRP: $13.65Now: $12.29Was: $13.65 -
On Sale
BARNETT Clutch Spring 502-00-01004
BARNETT
MSRP: $42.67Now: $38.40Was: $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
MSRP: $42.67Now: $38.40Was: $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
$8.95Qty in Cart: 0Quantity:Price:$8.95Subtotal: -
On Sale
ANDREWS 5-Speed Mainshaft 296910
ANDREWS
MSRP: $342.95Now: $308.66Was: $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
MSRP: $342.95Now: $308.66Was: $342.95 -
On Sale
ANDREWS Main Drive Gear With Belt Drive 296591
ANDREWS
MSRP: $288.95Now: $260.06Was: $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
MSRP: $288.95Now: $260.06Was: $288.95 -
On Sale
KIBBLEWHITE Heavy Duty Clutch Springs 20-0789
KIBBLEWHITE
MSRP: $49.20Now: $44.28Was: $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...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
MSRP: $49.20Now: $44.28Was: $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...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...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...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 -
On Sale
JOKER MACHINE Pulley Cover - Black 30-800-1
JOKER MACHINE
MSRP: $229.95Now: $206.96Was: $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...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
MSRP: $229.95Now: $206.96Was: $229.95 -
On Sale
JOKER MACHINE Sprocket Cover - XL - Black 10-810B
JOKER MACHINE
MSRP: $193.95Now: $174.56Was: $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...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
MSRP: $193.95Now: $174.56Was: $193.95Qty in Cart: 0Quantity:Price:MSRP: $193.95Now: $174.56Was: $193.95Subtotal: -
On Sale
JOKER MACHINE Sprocket Cover - XL - Clear 10-810S
JOKER MACHINE
MSRP: $193.95Now: $174.56Was: $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...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
MSRP: $193.95Now: $174.56Was: $193.95Qty in Cart: 0Quantity:Price:MSRP: $193.95Now: $174.56Was: $193.95Subtotal: -
On Sale
JOKER MACHINE Inspection Cover - Black - Finned 06-95-1
JOKER MACHINE
MSRP: $98.95Now: $89.06Was: $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...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
MSRP: $98.95Now: $89.06Was: $98.95 -
On Sale
JOKER MACHINE Inspection Cover 10-664-1
JOKER MACHINE
MSRP: $47.95Now: $43.16Was: $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...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
MSRP: $47.95Now: $43.16Was: $47.95Qty in Cart: 0Quantity:Price:MSRP: $47.95Now: $43.16Was: $47.95Subtotal: -
On Sale
JOKER MACHINE Derby Cover - Black - Finned 10-690-1
JOKER MACHINE
MSRP: $144.95Now: $130.46Was: $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...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
MSRP: $144.95Now: $130.46Was: $144.95
