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 Sprocket - Gloss Black - Flat - 48-Tooth 16421EB
DRAG SPECIALTIES
$85.23Convert rear drive belt to 530 chain, 2.22" Center diameter12101844- SKU:
- 12101844
- Availability:
- Ships Same Business Day
- Weight:
- 4.80 LBS
- CHAIN SIZE:
- 530
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 2.220'
- TYPE:
- CONVERSION
- UNITS:
- EACH
- MATERIAL:
- STEEL
- OFFSET IMPERIAL:
- CENTERED
- PRODUCT NAME:
- SPROCKET
- STYLE:
- FLAT
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$85.23 -
DRAG SPECIALTIES Rear Drive Belt - 140-Tooth - 24mm BDL SPC-140-1
DRAG SPECIALTIES
$207.95Carbon fiber reinforced Goodyear engineered Falcon SPC™ belts offer up to 33 percent more tensile strength than conventional aramid reinforced belts, High-temperature rubber compound offers excellent flex and long service life, Fabric reinforced belt...12040113- SKU:
- 12040113
- Availability:
- Ships Same Business Day
- Weight:
- 1.93 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 140
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
$207.95 -
On Sale
S&S CYCLE Final Drive Belt - 127-Tooth - 1 1/2" 106-0349
S&S CYCLE
MSRP: $292.95Now: $263.66Was: $292.95Made of super-strong Gates Carbon X3N material12040094- SKU:
- 12040094
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 127
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- X3N CARBON
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
MSRP: $292.95Now: $263.66Was: $292.95Qty in Cart: 0Quantity:Price:MSRP: $292.95Now: $263.66Was: $292.95Subtotal: -
On Sale
S&S CYCLE Final Drive Belt - 125-Tooth - 1 1/8" 106-0357
S&S CYCLE
MSRP: $284.95Now: $256.46Was: $284.95A reliable final drive belt is critical to maintaining consistent power delivery and preventing catastrophic drivetrain failure. The S&S Cycle 125-tooth belt uses Gates Carbon X3N material—engineered for superior tensile strength and resistance to heat...12040102- SKU:
- 12040102
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- TOOTH COUNT:
- 125
- TYPE:
- REAR DRIVE
MSRP: $284.95Now: $256.46Was: $284.95 -
DRAG SPECIALTIES Rear Pulley Spacer - .940" 193086
DRAG SPECIALTIES
$52.99Used when installing a wide rear tire, Polished billet aluminum construction12010102- SKU:
- 12010102
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 0,940'
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPACER
$52.99 -
DRAG SPECIALTIES Rear Pulley Spacer - 1.00" 193088
DRAG SPECIALTIES
$52.99Used when installing a wide rear tire, Polished billet aluminum construction12010103- SKU:
- 12010103
- Availability:
- Ships Same Business Day
- Weight:
- 1.09 LBS
- PRODUCT NAME:
- SPACER
- TYPE:
- PULLEY
- UNITS:
- EACH
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- WIDTH IMPERIAL:
- 1.000'
$52.99 -
DRAG SPECIALTIES Rear Pulley Spacer - 1.375" 193090
DRAG SPECIALTIES
$58.19When you're running a wide rear tire setup, proper wheel spacing is non-negotiable for clearance and handling dynamics. This billet aluminum spacer maintains precise axle geometry while accommodating oversized rubber, ensuring your rear end stays planted...12010105- SKU:
- 12010105
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- WIDTH IMPERIAL:
- 1,375'
- COLOR/FINISH:
- RAW
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPACER
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- EACH
$58.19 -
DRAG SPECIALTIES Rear Pulley Insert - XL '91-'03 302219
DRAG SPECIALTIES
$64.43A worn or damaged rear pulley insert compromises belt tension consistency and can lead to premature belt wear or slippage—especially critical for high-performance engines where precision timing matters. This DRAG SPECIALTIES insert restores OEM pulley...12010519- SKU:
- 12010519
- Availability:
- Ships Same Business Day
- Weight:
- 1.89 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MODEL:
- PRECISION-FORMED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- TYPE:
- PULLEY
$64.43 -
DRAG SPECIALTIES Chrome Derby Cover 33-0016K-BC427
DRAG SPECIALTIES
$44.24Die-cast construction with a domed design, Includes mounting hardware, '06 Dyna Glide and all '07-'18 Big Twin (except '16-'18 Dressers, '15 FLHTCUL/ FLHTKL, '18 FLSB) applications will require the use of gasket part 0934-0289 or 0934-0788.DS375647- SKU:
- DS375647
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MOUNTING STYLE:
- 4 HOLE
- COLOR/FINISH:
- CHROME
- MATERIAL:
- DIE-CAST
- RIDING STYLE:
- STREET
$44.24 -
DRAG SPECIALTIES Primary Chain Adjusting Shoe 15-0904-SC1
DRAG SPECIALTIES
$10.25Chain adjustment on cruisers and touring bikes demands a component that won't wear prematurely under load. The DRAG Specialties Primary Chain Adjusting Shoe replaces the stock nylon design with a harder-wearing alternative, eliminating the frequent...DS192001- SKU:
- DS192001
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- TYPE:
- PRIMARY CHAIN
- UNITS:
- EACH
- PRODUCT NAME:
- ADJUSTING SHOE
- RIDING STYLE:
- STREET
$10.25Qty in Cart: 0Quantity:Price:$10.25Subtotal: -
DRAG SPECIALTIES Lower Belt Guard - 07-17 FXST/FLST/FLSTF - Chrome G32-0323
DRAG SPECIALTIES
$146.59The Drag Specialties Lower Belt Guard protects your primary drivetrain from road debris, moisture, and environmental contamination that can compromise belt longevity and performance. This chrome-finished guard maintains clean aesthetics while delivering...12020069- SKU:
- 12020069
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- TYPE:
- REAR BELT
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GUARD
- UNITS:
- EACH
$146.59 -
DRAG SPECIALTIES Compensating Sprocket Kit 241272-LBX1
DRAG SPECIALTIES
$299.68Harley-Davidson's compensating sprocket system manages engine torque delivery across the entire RPM band, preventing drivetrain shock and extending clutch life. This complete kit replaces worn components that degrade shift quality and cause premature...DS195198- SKU:
- DS195198
- Availability:
- Ships Same Business Day
- Weight:
- 6.08 LBS
- TOOTH COUNT:
- 24
- PRODUCT NAME:
- SPROCKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- COMPENSATING
- UNITS:
- KIT
$299.68 -
DRAG SPECIALTIES Rear Drive Belt - 136-Tooth - 1 1/2" BDL SPC-136
DRAG SPECIALTIES
$272.43Carbon fiber reinforced Goodyear engineered Falcon SPC™ belts offer up to 33 percent more tensile strength than conventional aramid reinforced belts, High-temperature rubber compound offers excellent flex and long service life, Fabric reinforced belt...12040058- SKU:
- 12040058
- Availability:
- Ships Same Business Day
- Weight:
- 2.39 LBS
- MATERIAL:
- CARBON FIBER
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 136
- UNITS:
- EACH
- PRODUCT NAME:
- BELT
- TYPE:
- REAR DRIVE
- WIDTH IMPERIAL:
- 1-1/2'
$272.43 -
DRAG SPECIALTIES Rear Pulley Spacer - .125" 26-0128-S32
DRAG SPECIALTIES
$18.67When you upgrade to a wider rear tire, your sprocket or belt pulley alignment becomes critical—and that's where this spacer shim steps in. The DRAG SPECIALTIES Rear Pulley Spacer provides the precise .125" offset needed to maintain proper clearance and...12010232- SKU:
- 12010232
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- SPROCKET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPACER
- COLOR/FINISH:
- ZINC
- TYPE:
- PULLEY
- WIDTH IMPERIAL:
- 0.125'
- RIDING STYLE:
- STREET
$18.67Qty in Cart: 0Quantity:Price:$18.67Subtotal: -
DRAG SPECIALTIES Rear Pulley Insert - ST '00-'05 302218
DRAG SPECIALTIES
$106.03Precision-formed, chrome-plated rear pulley inserts, Designed to match OEM pulley, Fit the outer portions of the belt drive sprocket12010518- SKU:
- 12010518
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 70
- TYPE:
- PULLEY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- MODEL:
- PRECISION-FORMED
$106.03 -
DRAG SPECIALTIES Cush Drive Isolator Pulley W15-0562
DRAG SPECIALTIES
$38.43High quality rubber construction12010844- SKU:
- 12010844
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CUSH DRIVE
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- ISOLATOR
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$38.43 -
DRAG SPECIALTIES Lower Belt Guard - 99-08 FLHT/FLHX/FLHR/FLTR - Chrome G32-0327
DRAG SPECIALTIES
$89.39The Drag Specialties Lower Belt Guard provides essential protection for your primary drivetrain while maintaining the clean aesthetic of your touring cruiser. Chrome-finished construction resists corrosion and blends seamlessly with stock and custom...12020089- SKU:
- 12020089
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- GUARD
- UNITS:
- EACH
- TYPE:
- REAR BELT
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- LOWER
$89.39 -
DRAG SPECIALTIES Rear Drive Belt - 132-Tooth - 1 1/8" BDL SPC-132-118
DRAG SPECIALTIES
$250.59A reliable rear drive belt is critical to maintaining consistent power delivery and avoiding catastrophic drivetrain failure on the track or street. The DRAG SPECIALTIES 132-tooth belt delivers 33% greater tensile strength than conventional aramid...12040047- SKU:
- 12040047
- Availability:
- Ships Same Business Day
- Weight:
- 2.01 LBS
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
- MATERIAL:
- CARBON FIBER
- TOOTH COUNT:
- 132
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
$250.59 -
DRAG SPECIALTIES Primary Shoe Adjuster 210029
DRAG SPECIALTIES
$50.42Includes bracket shoe and retaining clip, Zinc plated, Replaces OEM adjuster78050022- SKU:
- 78050022
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- CHAIN ADJUSTER KIT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ZINC
- TYPE:
- PRIMARY CHAIN
$50.42 -
DRAG SPECIALTIES Clutch Ramp Assembly 72781
DRAG SPECIALTIES
$42.18Precision stock replacement clutch release ramp assembly meets or exceeds OEM specificationsDS194976- SKU:
- DS194976
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- PRODUCT NAME:
- RAMP ASSEMBLY
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RELEASE
- UNITS:
- EACH
$42.18
