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 Primary Tension Shoe 15-0986
DRAG SPECIALTIES
$16.95Replaces stock nylon shoe11200079- SKU:
- 11200079
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- ADJUSTING SHOE
- TYPE:
- PRIMARY CHAIN
$16.95Qty in Cart: 0Quantity:Price:$16.95Subtotal: -
DRAG SPECIALTIES Primary Chain Adjuster Kit G15-0940K
DRAG SPECIALTIES
$205.95Manual primary chain adjuster, Stops over-tightening of the primary chain that can occur with the stock automatic adjuster, Reduces the stress on the motor sprocket bearings and transmission drive bearings, Allows correct adjustment of the primary chain...11200393- SKU:
- 11200393
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- PRIMARY CHAIN ADJUSTER KIT
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY
$205.95Qty in Cart: 0Quantity:Price:$205.95Subtotal: -
DRAG SPECIALTIES Compensator Kit D26-0145K
DRAG SPECIALTIES
$411.95Designed to handle high torque and horsepower in high-performance engine applications, Increased travel helps protect the motor and drivetrain from the harsh shock of full throttle launches, Kit features a 34-tooth compensator sprocket, heavy-duty spring...11200404- SKU:
- 11200404
- Availability:
- Ships Same Business Day
- Weight:
- 11.35 LBS
- TOOTH COUNT:
- 34
- UNITS:
- KIT
- PRODUCT NAME:
- COMPENSATOR
- RIDING STYLE:
- STREET
$411.95 -
DRAG SPECIALTIES Chrome Derby Cover 33-0067
DRAG SPECIALTIES
$72.95Die-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 0934-0788.11070006- SKU:
- 11070006
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
- MATERIAL:
- DIE-CAST
- MOUNTING STYLE:
- 6 HOLE
$72.95Qty in Cart: 0Quantity:Price:$72.95Subtotal: -
DRAG SPECIALTIES Primary Chain Adjuster G15-0941K
DRAG SPECIALTIES
$63.95Includes bracket shoe and retaining clip, Zinc plated, Replaces OEM adjuster11200352- SKU:
- 11200352
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- COLOR/FINISH:
- ZINC
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY CHAIN
- PRODUCT NAME:
- CHAIN ADJUSTER KIT
- UNITS:
- EACH
- MATERIAL:
- STEEL
$63.95Qty in Cart: 0Quantity:Price:$63.95Subtotal: -
DRAG SPECIALTIES Chrome Derby Cover 33-0017K-BC427
DRAG SPECIALTIES
$51.45Die-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.DS375650- SKU:
- DS375650
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- DIE-CAST
- MOUNTING STYLE:
- 3 HOLE
- RIDING STYLE:
- STREET
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- DERBY COVER
- UNITS:
- EACH
$51.45 -
On Sale
S&S CYCLE Trap Door 56-1027
S&S CYCLE
MSRP: $519.95Now: $467.96Was: $519.95Billet construction, Kit includes bearings and hardware, Made in the U.S.A.561027- SKU:
- 561027
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- TRANSMISSION TYPE:
- 5-SPEED
- TYPE:
- TRANSMISSION
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- TRAP DOOR
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $519.95Now: $467.96Was: $519.95 -
On Sale
S&S CYCLE Transmission Door 56-1025
S&S CYCLE
MSRP: $443.95Now: $399.56Was: $443.95Billet construction, Made in the U.S.A.11050229- SKU:
- 11050229
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- CASE
- UNITS:
- EACH
MSRP: $443.95Now: $399.56Was: $443.95 -
On Sale
S&S CYCLE Final Drive Belt - 135-Tooth - 1 1/2" 106-0354
S&S CYCLE
MSRP: $275.95Now: $248.36Was: $275.95Made of super-strong Gates Carbon X3N material12040099- SKU:
- 12040099
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
- TOOTH COUNT:
- 135
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- TYPE:
- REAR DRIVE
MSRP: $275.95Now: $248.36Was: $275.95Qty in Cart: 0Quantity:Price:MSRP: $275.95Now: $248.36Was: $275.95Subtotal: -
On Sale
S&S CYCLE Inner Primary Bearing Race 560-0241
S&S CYCLE
MSRP: $82.95Now: $74.66Was: $82.95Eliminates bearing race movement that can cause costly damage to transmission seal and output bearing, A must for high-performance applications, Made in the U.S.A.11200335- SKU:
- 11200335
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- UNITS:
- EACH
- PRODUCT NAME:
- BEARING RACE
MSRP: $82.95Now: $74.66Was: $82.95 -
DRAG SPECIALTIES Drive Pulley Installation Kit 191384-HC4
DRAG SPECIALTIES
$34.95Kit includes a main shaft pulley nut, lock plate, bolts and quad seal12030009- SKU:
- 12030009
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PULLEY
- PRODUCT NAME:
- INSTALLATION KIT
- UNITS:
- KIT
$34.95 -
DRAG SPECIALTIES Clutch Basket 148422
DRAG SPECIALTIES
$411.95DRAG SPECIALTIES Clutch Basket11321583- SKU:
- 11321583
- Availability:
- Ships Same Business Day
- Weight:
- 4.80 LBS
- PRODUCT NAME:
- CLUTCH BASKET
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$411.95 -
DRAG SPECIALTIES Clutch Release Kit 144005
DRAG SPECIALTIES
$51.95Includes one inner ramp (OEM #25453-87A), one outer ramp (OEM #25409-94), one cable coupling (OEM #34920-86) and three ball bearings (OEM #8873)11321476- SKU:
- 11321476
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- CLUTCH RELEASE KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$51.95 -
DRAG SPECIALTIES Clutch Basket 148141
DRAG SPECIALTIES
$335.95Replacement clutch shell with starter gear11321379- SKU:
- 11321379
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
- PRODUCT NAME:
- CLUTCH SHELL
- TYPE:
- CLUTCH
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$335.95 -
DRAG SPECIALTIES Clutch Pushrod End 370186-BC3
DRAG SPECIALTIES
$16.43Stamped steel construction, Includes oil slinger, For use with mechanical clutches78050015- SKU:
- 78050015
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- PRODUCT NAME:
- PUSHROD END
$16.43 -
DRAG SPECIALTIES Transmission Cover - Chrome 302092-BC403
DRAG SPECIALTIES
$89.56Mount with existing hardware, Not for use with hydraulic clutch.DS325519- SKU:
- DS325519
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- PRODUCT NAME:
- COVER
- TYPE:
- TRANSMISSION SIDE
- MOUNTING STYLE:
- 6 HOLE
- MATERIAL:
- ZINC
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$89.56 -
DRAG SPECIALTIES Transmission Top Cover I35-0029C/G
DRAG SPECIALTIES
$111.95Die-cast construction, Include aluminum-coated black foam gasket (repl. OEM #25700453) and vent hose11050250- SKU:
- 11050250
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION TOP
$111.95 -
DRAG SPECIALTIES Transmission Top Cover - Black 35-0027MB
DRAG SPECIALTIES
$74.95Beautifully complements other chrome or flat black engine and transmission pieces, Kit 2401-0618 includes two 1/4" - 24 long screws, OEM #1765W; nine 1/4" - 24 short screws, OEM #1766W and one breather screw, OEM #34720-56, Made in the U.S.A.11050210- SKU:
- 11050210
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COLOR/FINISH:
- BLACK
- MOUNTING STYLE:
- 5 HOLE
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION TOP
$74.95 -
DRAG SPECIALTIES 5 Stud Pressure Plate 17-0023A
DRAG SPECIALTIES
$13.95Stamped steel construction, Designed for use with five-stud clutch hubs11312180- SKU:
- 11312180
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- STEEL
- STYLE:
- FIVE-STUD
- TYPE:
- CLUTCH
- UNITS:
- EACH
- PRODUCT NAME:
- PRESSURE PLATE
- RIDING STYLE:
- STREET
$13.95 -
DRAG SPECIALTIES Clutch Release Kit VT-18-3212-BC3
DRAG SPECIALTIES
$41.15Kit includes (1) inner ramp (25452-87A), (1) outer ramp (25453-87A), (1) coupling (34920-86), (3) ball bearings (8873), (1) snap ring (10998) and (1) cover gasket (36801-87B)DS194016- SKU:
- DS194016
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- PRODUCT NAME:
- RELEASE KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH RELEASE
$41.15
