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
-
DRAG SPECIALTIES Replacement Chain Adjuster Shoe G15-0940K-NU
DRAG SPECIALTIES
$23.64Stock automatic primary chain adjusters can creep over time, leading to excessive chain tension that accelerates wear on your motor sprocket and transmission drive bearings. The DRAG SPECIALTIES manual adjuster eliminates this problem by giving you...11200394- SKU:
- 11200394
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- UNITS:
- EACH
- TYPE:
- PRIMARY
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PRIMARY CHAIN ADJUSTER KIT
- RIDING STYLE:
- STREET
$23.64Qty in Cart: 0Quantity:Price:$23.64Subtotal: -
DRAG SPECIALTIES 5-Hole - Chrome - Live to Ride Derby Cover D33-0110CA
DRAG SPECIALTIES
$108.10A quality derby cover does more than protect your engine—it's a statement about how you maintain your machine. The Drag Specialties 5-Hole Chrome Derby Cover combines reliable engine protection with classic styling that complements any cruiser build. The...11070554- SKU:
- 11070554
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- DERBY COVER
- MOUNTING STYLE:
- 5 HOLE
- RIDING STYLE:
- STREET
- MODEL:
- LIVE TO RIDE
- STYLE:
- EAGLE WITH BANNER
$108.10 -
DRAG SPECIALTIES Matte Black Derby Cover D33-0110MB
DRAG SPECIALTIES
$109.13A clean, professional derby cover protects your primary chaincase from debris and weather while delivering the aggressive aesthetic that defines modern Big Twin styling. This die-cast cover combines durability with a refined matte black finish that...11070557- SKU:
- 11070557
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MOUNTING STYLE:
- 5 HOLE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- DERBY COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- MATTE BLACK
$109.13 -
DRAG SPECIALTIES Inspection Cover - Chrome - '85-'94 FXR 33-0009A
DRAG SPECIALTIES
$46.30Keep your FXR's engine bay looking showroom-fresh while protecting critical internal components from dirt and debris. This chrome-plated inspection cover delivers the clean, finished appearance that separates a well-maintained machine from a neglected...11070389- SKU:
- 11070389
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- TYPE:
- PRIMARY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- INSPECTION COVER
- MOUNTING STYLE:
- 4 HOLE
- RIDING STYLE:
- STREET
$46.30Qty in Cart: 0Quantity:Price:$46.30Subtotal: -
DRAG SPECIALTIES Clutch Basket 77637
DRAG SPECIALTIES
$432.55A worn or damaged clutch basket compromises power delivery and creates unpredictable engagement, directly impacting lap times and reliability. The DRAG Specialties 77637 is a direct OEM replacement that restores smooth, consistent clutch operation...11321301- SKU:
- 11321301
- Availability:
- Ships Same Business Day
- Weight:
- 6.96 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH SHELL
- TYPE:
- CLUTCH
$432.55Qty in Cart: 0Quantity:Price:$432.55Subtotal: -
DRAG SPECIALTIES Heavy Duty Throwout Bearing Pushrod Kit 37305-70-HC3
DRAG SPECIALTIES
$66.90A worn or failing clutch pushrod assembly compromises both lever feel and power transfer, leaving you with mushy engagement and potential mid-race slippage. This DRAG SPECIALTIES heavy-duty kit supplies all the components needed to restore precise clutch...DS194115- SKU:
- DS194115
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- PRODUCT NAME:
- PUSHROD KIT
- UNITS:
- EACH
$66.90Qty in Cart: 0Quantity:Price:$66.90Subtotal: -
DRAG SPECIALTIES Clutch Hub 148116-BX-LB1
DRAG SPECIALTIES
$189.47A worn or damaged clutch hub can compromise your entire drivetrain's reliability, especially under high-load conditions. The DRAG SPECIALTIES Clutch Hub 148116-BX-LB1 features a reinforced insert design that increases durability and resists premature...DS195000- SKU:
- DS195000
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- PRODUCT NAME:
- INNER HUB
- UNITS:
- EACH
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
$189.47 -
DRAG SPECIALTIES Clutch Hub 148109-BX-LB1
DRAG SPECIALTIES
$128.70A worn or compromised clutch hub can undermine your entire drivetrain's reliability, especially in high-demand riding conditions where power transfer demands precision. The DRAG SPECIALTIES Clutch Hub 148109-BX-LB1 delivers reinforced construction that...DS195002- SKU:
- DS195002
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- TYPE:
- CLUTCH
- PRODUCT NAME:
- INNER HUB
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$128.70 -
DRAG SPECIALTIES Forged Kicker Arm 292020-BC3
DRAG SPECIALTIES
$47.33A worn or damaged kicker arm compromises your transmission's shifting reliability and can lead to costly internal damage if left unaddressed. The DRAG SPECIALTIES Forged Kicker Arm delivers OEM-equivalent durability with a robust forged steel...DS241003- SKU:
- DS241003
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- PRODUCT NAME:
- KICKER ARM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- UNITS:
- EACH
$47.33Qty in Cart: 0Quantity:Price:$47.33Subtotal: -
DRAG SPECIALTIES Clutch Shell 148112-BX-LB2
DRAG SPECIALTIES
$333.67A worn or damaged clutch shell compromises your entire drivetrain's efficiency, leading to slippage, inconsistent engagement, and potential catastrophic failure under load. The DRAG SPECIALTIES Clutch Shell 148112-BX-LB2 is a direct replacement unit that...DS195190- SKU:
- DS195190
- Availability:
- Ships Same Business Day
- Weight:
- 7.88 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CLUTCH SHELL
- TYPE:
- CLUTCH
- UNITS:
- EACH
$333.67 -
DRAG SPECIALTIES Compensating Sprocket - 24 Tooth 26-0020-24BXLB1
DRAG SPECIALTIES
$110.16A worn or damaged compensating sprocket compromises engine timing and throttle response, creating inconsistent power delivery and potential drivetrain stress. The DRAG SPECIALTIES 24-tooth compensating sprocket restores precise primary drive engagement,...DS191011- SKU:
- DS191011
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- PRODUCT NAME:
- SPROCKET
- TYPE:
- COMPENSATING
- MATERIAL:
- STEEL
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 24
$110.16Qty in Cart: 0Quantity:Price:$110.16Subtotal: -
DRAG SPECIALTIES Rear Sprocket Spacer - .300" 26-0125-S30-SC2
DRAG SPECIALTIES
$18.67When upgrading to a wider rear tire, proper sprocket alignment is critical for chain wear, belt longevity, and overall drivetrain health. The DRAG SPECIALTIES Rear Sprocket Spacer provides the precise offset needed to maintain correct sprocket geometry...DS199464- SKU:
- DS199464
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- SPROCKET
- COLOR/FINISH:
- ZINC
- MATERIAL:
- STEEL
- WIDTH IMPERIAL:
- 0.300'
- PRODUCT NAME:
- SPACER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- PULLEY
$18.67Qty in Cart: 0Quantity:Price:$18.67Subtotal: -
DRAG SPECIALTIES Clutch Adjuster Release Plate 75741
DRAG SPECIALTIES
$14.37Mechanical clutch systems demand precise actuation for reliable engagement and disengagement—especially under racing conditions where milliseconds matter. The DRAG SPECIALTIES Clutch Adjuster Release Plate 75741 is engineered to deliver consistent clutch...DS194977- SKU:
- DS194977
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- CLUTCH ADJUSTER
- PRODUCT NAME:
- RELEASE PLATE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$14.37Qty in Cart: 0Quantity:Price:$14.37Subtotal: -
DRAG SPECIALTIES Wrinkle Black Derby Cover 33-0017KWB
DRAG SPECIALTIES
$44.24A quality derby cover protects your engine's internal components while delivering a clean, finished look to your bike's top end. This die-cast Wrinkle Black cover from Drag Specialties combines durability with aesthetic appeal—essential for riders who...11070364- SKU:
- 11070364
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- WRINKLE BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- MATERIAL:
- DIE-CAST
- MOUNTING STYLE:
- 3 HOLE
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
$44.24Qty in Cart: 0Quantity:Price:$44.24Subtotal: -
DRAG SPECIALTIES Inspection Cover - Wrinkle Black 14009W
DRAG SPECIALTIES
$21.58A clean engine bay starts with quality details, and this inspection cover protects your engine's internals while delivering a finished look that reflects your standards. Whether you're running a show bike or a daily driver, a properly installed...11070375- SKU:
- 11070375
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MATERIAL:
- STEEL
- UNITS:
- EACH
- MOUNTING STYLE:
- 4 HOLE
- COLOR/FINISH:
- WRINKLE BLACK
- PRODUCT NAME:
- INSPECTION COVER
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
$21.58 -
DRAG SPECIALTIES Primary Chain Adjuster Nut - XL '04-'17 G15-0941K-NU
DRAG SPECIALTIES
$10.25A properly tensioned primary chain is essential to reliable engine performance and longevity on your Harley-Davidson XL. Loose chain tension leads to premature wear, noise, and potential catastrophic failure—this OEM-spec adjuster nut ensures secure,...11200353- SKU:
- 11200353
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- ZINC
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ADJUSTER NUT
- UNITS:
- EACH
- TYPE:
- SEALING
$10.25Qty in Cart: 0Quantity:Price:$10.25Subtotal: -
DRAG SPECIALTIES Transmission Dipstick I30-0310
DRAG SPECIALTIES
$22.61Accurate transmission fluid monitoring is critical for maintaining optimal shift quality, prolonged transmission life, and preventing costly internal damage from running low or overfilled. The DRAG SPECIALTIES Transmission Dipstick delivers the precision...11050022- SKU:
- 11050022
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- MATERIAL:
- BILLET STEEL
- PRODUCT NAME:
- FILL PLUG
- TYPE:
- TRANSMISSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$22.61Qty in Cart: 0Quantity:Price:$22.61Subtotal: -
DRAG SPECIALTIES Rear Chain Adjuster Bolt 15-0902-SC1
DRAG SPECIALTIES
$33.23A properly tensioned rear chain is fundamental to both performance and longevity—improper tension leads to accelerated sprocket wear, chain slip, and potential drivetrain failure. The DRAG SPECIALTIES Rear Chain Adjuster Bolt provides precise, repeatable...DS195062- SKU:
- DS195062
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REAR
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- ADJUSTER BOLT
- UNITS:
- PAIR
$33.23 -
On Sale
S&S CYCLE Final Drive Belt - 132-Tooth - 1 1/8" 106-0360
S&S CYCLE
MSRP: $284.95Now: $256.46Was: $284.95A reliable final drive belt is critical to maintaining consistent power delivery and avoiding costly downtime on your motorcycle. The S&S Cycle 132-tooth belt uses Gates Carbon X3N material—engineered to withstand extreme loads and resist wear better...12040105- SKU:
- 12040105
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- TOOTH COUNT:
- 132
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
MSRP: $284.95Now: $256.46Was: $284.95Qty in Cart: 0Quantity:Price:MSRP: $284.95Now: $256.46Was: $284.95Subtotal: -
On Sale
S&S CYCLE Final Drive Belt - 133-Tooth - 1 1/8" 106-0361
S&S CYCLE
MSRP: $284.95Now: $256.46Was: $284.95A reliable final drive belt is critical to consistent power transfer and overall drivetrain longevity on high-performance engines. The S&S Cycle 133-tooth belt uses Gates Carbon X3N material—a premium compound engineered to resist wear, heat, and slip...12040106- SKU:
- 12040106
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- TOOTH COUNT:
- 133
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
MSRP: $284.95Now: $256.46Was: $284.95Qty in Cart: 0Quantity:Price:MSRP: $284.95Now: $256.46Was: $284.95Subtotal:
