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: $284.95Made of super-strong Gates Carbon X3N material12040102- 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
$58.19Used when installing a wide rear tire, Polished billet aluminum construction12010105- 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
$64.43Precision-formed, chrome-plated rear pulley inserts, Designed to match OEM pulley, Fit the outer portions of the belt drive sprocket12010519- 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
$10.25Replaces stock nylon shoeDS192001- 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
$146.59Simple bolt-on installation12020069- 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
$299.68Complete kits contain a high-quality sprocket, sprocket shaft extension, sliding cam, sprocket nut and cover with spring plateDS195198- 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
$18.67Zinc-plated steel spacer shims for rear sprocket or belt pulley, Used often when installing a wider rear tire, Longer bolts may be required when using spacers.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
$18.67 -
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
$89.39Simple bolt-on installation12020089- 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
$250.59Carbon 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...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
