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 Rear Belt Drive - 134 Tooth BDL SPC-134-24
DRAG SPECIALTIES
$211.95A reliable belt drive is foundational to consistent power delivery in any high-performance drivetrain. The DRAG SPECIALTIES 134-tooth rear belt combines carbon-fiber reinforcement with a high-temperature rubber compound to handle sustained load and heat...12040234- SKU:
- 12040234
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 134
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
$211.95 -
DRAG SPECIALTIES Rear Drive Belt - 128-Tooth - 1 1/2" BDL SPC-128
DRAG SPECIALTIES
$277.67A quality rear drive belt is fundamental to reliable power transmission and consistent performance in demanding applications. The DRAG SPECIALTIES Rear Drive Belt delivers 33% greater tensile strength than conventional aramid-reinforced alternatives,...12040041- SKU:
- 12040041
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 128
- WIDTH IMPERIAL:
- 1-1/2'
- TYPE:
- REAR DRIVE
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$277.67 -
DRAG SPECIALTIES Rear Drive Belt - 130-Tooth - 1 1/8" BDL SPC-130-118
DRAG SPECIALTIES
$255.41A reliable rear drive belt is non-negotiable for consistent power delivery and longevity in high-performance applications. This DRAG SPECIALTIES belt combines carbon fiber reinforcement with Goodyear's Falcon SPC™ technology to deliver 33% more tensile...12040044- SKU:
- 12040044
- Availability:
- Ships Same Business Day
- Weight:
- 2.02 LBS
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 130
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 1-1/8'
$255.41 -
DRAG SPECIALTIES Rear Drive Belt - 132-Tooth - 1 1/2" BDL SPC-132
DRAG SPECIALTIES
$277.67A reliable rear drive belt is critical to maintaining consistent power delivery and avoiding catastrophic drivetrain failure during high-demand riding. The DRAG SPECIALTIES 132-Tooth belt combines carbon fiber reinforcement with Goodyear's proven Falcon...12040046- SKU:
- 12040046
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 132
- UNITS:
- EACH
$277.67 -
DRAG SPECIALTIES Rear Drive Belt - 132-Tooth - 20mm BDL SPC-132-20
DRAG SPECIALTIES
$211.95A reliable rear drive belt is critical to maintaining consistent power delivery and avoiding catastrophic drivetrain failure. This Drag Specialties 132-tooth belt combines carbon fiber reinforcement with a high-temp rubber compound to handle the...12040049- SKU:
- 12040049
- Availability:
- Ships Same Business Day
- Weight:
- 1.74 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 132
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
$211.95 -
DRAG SPECIALTIES Rear Drive Belt - 133-Tooth - 1 1/2" BDL SPC-133
DRAG SPECIALTIES
$277.67A reliable rear drive belt is critical to maintaining consistent power delivery and preventing catastrophic drivetrain failure. This Drag Specialties 133-tooth belt combines carbon fiber reinforcement with Goodyear's proven Falcon SPC™ technology to...12040050- SKU:
- 12040050
- Availability:
- Ships Same Business Day
- Weight:
- 2.44 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 133
- UNITS:
- EACH
$277.67 -
DRAG SPECIALTIES Rear Drive Belt - 133-Tooth - 1 1/8" BDL SPC-133-118
DRAG SPECIALTIES
$255.41Drag Specialties rear drive belts deliver the tensile strength and durability needed for consistent power transfer in high-demand applications. The carbon fiber reinforced construction resists the wear and debris that compromise conventional belts,...12040051- SKU:
- 12040051
- Availability:
- Ships Same Business Day
- Weight:
- 2.06 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 133
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
$255.41 -
DRAG SPECIALTIES Rear Drive Belt - 133-Tooth - 1" BDL SPC-133-1
DRAG SPECIALTIES
$211.95A reliable rear drive belt is non-negotiable for consistent power delivery and dependable performance. The DRAG SPECIALTIES 133-Tooth belt delivers 33% greater tensile strength than conventional aramid alternatives, meaning fewer belt slips and longer...12040052- SKU:
- 12040052
- Availability:
- Ships Same Business Day
- Weight:
- 1.91 LBS
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 133
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 1'
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
$211.95 -
DRAG SPECIALTIES Rear Drive Belt - 135-Tooth - 20mm BDL SPC-135-20
DRAG SPECIALTIES
$211.95A quality rear drive belt is non-negotiable for reliable power transfer and consistent performance on the track or street. This Drag Specialties belt delivers the tensile strength and heat resistance you need to handle sustained high-RPM operation...12040057- SKU:
- 12040057
- Availability:
- Ships Same Business Day
- Weight:
- 1.74 LBS
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- BELT
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 135
$211.95 -
DRAG SPECIALTIES Transmission Bearing 40-3007-W
DRAG SPECIALTIES
$13.17A transmission bearing failure can leave you stranded or cost you a race. The DRAG SPECIALTIES Transmission Bearing 40-3007-W is engineered to handle the brutal load cycles of high-performance driving, delivering the reliability you need when precision...11060009- SKU:
- 11060009
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- STREET
- STYLE:
- FIFTH GEAR
- TYPE:
- MAINSHAFT
- PRODUCT NAME:
- NEEDLE BEARING
- UNITS:
- EACH
$13.17 -
DRAG SPECIALTIES Needle Roller Bearing 40-3084-W
DRAG SPECIALTIES
$40.58Needle roller bearings are critical for high-speed applications where radial load capacity and compact design are non-negotiable. The DRAG SPECIALTIES 40-3084-W delivers precision tolerances and reliable performance in demanding engine and transmission...11060039- SKU:
- 11060039
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- STYLE:
- FIFTH GEAR
- TYPE:
- MAINSHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- NEEDLE BEARING
$40.58 -
DRAG SPECIALTIES Mainshaft Bearing Kit 25-3102
DRAG SPECIALTIES
$32.01A worn or failing mainshaft bearing compromises clutch engagement, increases drivetrain slop, and accelerates wear on adjacent components. This sealed bearing kit restores the precise tolerances your transmission demands, whether you're running stock...11200217- SKU:
- 11200217
- Availability:
- Ships Same Business Day
- Weight:
- 0.52 LBS
- TYPE:
- INNER PRIMARY MAINSHAFT
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL KIT
- UNITS:
- KIT
$32.01 -
DRAG SPECIALTIES Inner Primary Bearing R16-2RS-W
DRAG SPECIALTIES
$12.16A worn or failing inner primary bearing creates excessive play in your transmission mainshaft, leading to poor power delivery, increased noise, and potential catastrophic drivetrain failure during hard acceleration. The DRAG Specialties R16-2RS-W sealed...11200177- SKU:
- 11200177
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- TYPE:
- INNER PRIMARY MAINSHAFT
- UNITS:
- EACH
$12.16 -
DRAG SPECIALTIES Clutch Bearing 6206-2RS
DRAG SPECIALTIES
$15.95A worn or failing clutch bearing compromises your entire drivetrain's reliability, especially under the demands of drag racing or high-performance driving. The DRAG SPECIALTIES Clutch Bearing 6206-2RS is a precision-engineered replacement component that...11320197- SKU:
- 11320197
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- TYPE:
- CLUTCH HUB
- RIDING STYLE:
- STREET
$15.95 -
DRAG SPECIALTIES Clutch Bearing R12-2RS
DRAG SPECIALTIES
$11.27A worn or failing clutch bearing is a critical failure point that compromises your entire drivetrain. The DRAG SPECIALTIES Clutch Bearing R12-2RS is a precision replacement component engineered to restore smooth clutch disengagement and eliminate drag,...11320198- SKU:
- 11320198
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RELEASE
- UNITS:
- EACH
$11.27 -
DRAG SPECIALTIES Shorty Upper Belt Guard - Stainless Steel 1202-0018
DRAG SPECIALTIES
$62.05A properly functioning belt guard protects your final drive system from debris, moisture, and accidental contact—critical for maintaining chain and sprocket longevity and preventing costly mid-ride failures. DRAG SPECIALTIES' stainless steel construction...12020018- SKU:
- 12020018
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- MATERIAL:
- STAINLESS STEEL
- MOUNTING POSITION:
- UPPER
- PRODUCT NAME:
- GUARD
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- BELT
$62.05Qty in Cart: 0Quantity:Price:$62.05Subtotal: -
DRAG SPECIALTIES Shorty Upper Belt Guard - Chrome 1202-0019
DRAG SPECIALTIES
$80.24A final belt drive guard isn't just protection—it's a necessity for any serious rider. The Drag Specialties Shorty Upper Belt Guard shields your drivetrain from road debris, moisture, and accidental contact while maintaining clean aesthetics on your...12020019- SKU:
- 12020019
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- CHROME
- MOUNTING POSITION:
- UPPER
- TYPE:
- REAR BELT
- PRODUCT NAME:
- GUARD
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$80.24 -
DRAG SPECIALTIES Steel Plates 1131-0445
DRAG SPECIALTIES
$46.59Drag Specialties steel plates deliver the precision and durability you need when every shift counts. Built to handle extreme heat without compromising engagement or performance, these plates are engineered for racers who demand consistency—whether you're...11310445- SKU:
- 11310445
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- DRIVE PLATE
- TYPE:
- CLUTCH
- UNITS:
- SET OF 8
- RIDING STYLE:
- STREET
$46.59 -
DRAG SPECIALTIES Starter Gear 73022
DRAG SPECIALTIES
$54.01A reliable starter gear is foundational to consistent engine cranking and dependable starts—especially critical in high-performance and racing applications where ignition response directly impacts your lap times and overall reliability. The DRAG...DS196007- SKU:
- DS196007
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- PRODUCT NAME:
- GEAR
- TOOTH COUNT:
- 20
- UNITS:
- EACH
- SIZE:
- OVERSIZE (+0,020')
- TYPE:
- STARTER
- RIDING STYLE:
- STREET
$54.01 -
DRAG SPECIALTIES Shifter Cam Follower 75206
DRAG SPECIALTIES
$19.95The stock aluminum shifter cam follower is a known weak point in high-rpm shifting applications, prone to wear and premature failure under sustained load. This DRAG SPECIALTIES upgrade uses quality steel construction to deliver superior durability and...DS194225- SKU:
- DS194225
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- SHIFTER CAM FOLLOWER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
$19.95
