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
-
On Sale
S&S CYCLE Transmission Side Cover 106-6479-00
S&S CYCLE
MSRP: $255.95Now: $230.36Was: $255.95Close to original as you can get without stealing one from a factory museum bike, Boss imperfections in the casting are maliciously duplicated to represent the casting capabilities of the era, 100% CNC-machined to achieve quality S&S standards, Inside of...11070498- SKU:
- 11070498
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- COLOR/FINISH:
- UNFINISHED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION END
- MOUNTING STYLE:
- 9 HOLE
MSRP: $255.95Now: $230.36Was: $255.95Qty in Cart: 0Quantity:Price:MSRP: $255.95Now: $230.36Was: $255.95Subtotal: -
On Sale
S&S CYCLE Inner Primary Bearing Race 56-5089
S&S CYCLE
MSRP: $81.95Now: $73.76Was: $81.95Eliminates 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.11200148- SKU:
- 11200148
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- PRODUCT NAME:
- BEARING RACE
- UNITS:
- EACH
MSRP: $81.95Now: $73.76Was: $81.95 -
On Sale
S&S CYCLE Transmission Countershaft Bearing 56-3031
S&S CYCLE
MSRP: $50.95Now: $45.86Was: $50.95High-quality replacement bearing, Made in the U.S.A.11060207- SKU:
- 11060207
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BEARING
- UNITS:
- EACH
- TYPE:
- COUNTERSHAFT
- TYPE:
- TRANSMISSION
MSRP: $50.95Now: $45.86Was: $50.95Qty in Cart: 0Quantity:Price:MSRP: $50.95Now: $45.86Was: $50.95Subtotal: -
PAUGHCO Inner Primary Cover - Chrome 753E
PAUGHCO
$239.95Made in the U.S.A.11070188- SKU:
- 11070188
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$239.95Qty in Cart: 0Quantity:Price:$239.95Subtotal: -
PBI Sprocket - Front - 19-Tooth 277X-19-520
PBI
$71.85Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120318- SKU:
- 12120318
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- MATERIAL:
- CHROMOLY STEEL
- TYPE:
- CONVERSION
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 19
$71.85 -
PBI Sprocket - Front - 21-Tooth 277X-21-520
PBI
$79.25Sprockets are sold each; must order one front and one rear sprocket, Made in the U.S.A., May require custom spacing of front sprocket.12120320- SKU:
- 12120320
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- SPROCKET
- TYPE:
- CONVERSION
- UNITS:
- EACH
- MATERIAL:
- CHROMOLY STEEL
- TOOTH COUNT:
- 21
- RIDING STYLE:
- STREET
$79.25 -
On Sale
PRO-ONE PERF.MFG. Derby Cover - Millennium - Smooth 202120
PRO-ONE PERF.MFG.
MSRP: $115.45Now: $103.91Was: $115.45Billet aluminum coversDS375744- SKU:
- DS375744
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- UNITS:
- EACH
- MODEL:
- MILLENNIUM
- RIDING STYLE:
- STREET
- TYPE:
- DERBY
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- STYLE:
- SMOOTH
MSRP: $115.45Now: $103.91Was: $115.45 -
On Sale
PRO-ONE PERF.MFG. Derby Cover - Millennium - Ball Milled 202130
PRO-ONE PERF.MFG.
MSRP: $115.45Now: $103.91Was: $115.45Billet aluminum coversDS375745- SKU:
- DS375745
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- BALL-MILLED
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- DERBY
- MODEL:
- MILLENNIUM
- UNITS:
- EACH
MSRP: $115.45Now: $103.91Was: $115.45Qty in Cart: 0Quantity:Price:MSRP: $115.45Now: $103.91Was: $115.45Subtotal: -
MUELLER MOTORCYCLE AG Power Clutch 120-10
MUELLER MOTORCYCLE AG
$247.95The original Müller Power Clutch, Replaces OEM inner and outer ramp assemblies, 45% easier clutch lever operation, Easy to install; no drilling or spacers needed, Made in Germany11300003- SKU:
- 11300003
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- MODEL:
- POWER CLUTCH
- TYPE:
- MECHANICAL
- PRODUCT NAME:
- CLUTCH RAMP
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$247.95 -
TRASK Clutch Actuator Cover - Chrome - Hydraulic TM-2039CH
TRASK
$399.95Billet cover is used when converting from a cable clutch to hydraulic clutch, Include an upgraded throw-out bearing; a must for big motors with a heavier clutch pull, Require the use of 11/16" bore master cylinder, Hydraulic clutch line must be purchased...11070406- SKU:
- 11070406
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- MOUNTING STYLE:
- 6 HOLE
- TRANSMISSION TYPE:
- 6-SPEED
- TYPE:
- TRANSMISSION SIDE
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$399.95Qty in Cart: 0Quantity:Price:$399.95Subtotal: -
TRASK V-Rod Clutch Basket TM-2014
TRASK
$599.95Machined T-6061 billet aluminum, Reduces weight from the factory set up by 9 ounces, resulting in more power and quicker throttle response, Hard-anodized coating for minimal wear, Made in the U.S.A.11320883- SKU:
- 11320883
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- PRODUCT NAME:
- CLUTCH BASKET
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
$599.95Qty in Cart: 0Quantity:Price:$599.95Subtotal: -
PANTHER Rear Drive Belt - 133-Tooth - 1 1/2" 62-0942
PANTHER
$256.95Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...DS197005- SKU:
- DS197005
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- TOOTH COUNT:
- 133
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- BELT
$256.95 -
PANTHER Rear Drive Belt - 125-Tooth - 1 1/8" 62-0944
PANTHER
$227.95Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...DS197007- SKU:
- DS197007
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- TOOTH COUNT:
- 125
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
$227.95Qty in Cart: 0Quantity:Price:$227.95Subtotal: -
PANTHER Rear Drive Belt - 128-Tooth - 1 1/8" 62-0945
PANTHER
$236.95Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...DS197008- SKU:
- DS197008
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 128
- WIDTH IMPERIAL:
- 1-1/8'
- TYPE:
- REAR DRIVE
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
$236.95 -
PANTHER Rear Drive Belt - 135-Tooth - 1 1/8" 62-1172
PANTHER
$216.95Improved RPP™ Panther® Design, Feature ULTRA-CORD™ tensile members and the Able™ compound, ULTRA-CORD doesn't stretch or shrink, thus reducing the strain on bearings, shafts, and other drive components, ULTRA-CORD resists degradation and moisture to give...MBR135- SKU:
- MBR135
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 135
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
$216.95 -
MAGNUM Clutch Line 41986
MAGNUM
$138.95Constructed with PTFE inner tubing, DuPont Kevlar aramid fiber, premium Signature Magnum braids and an outer PVC jacket, Three unique stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other Magnum...11321117- SKU:
- 11321117
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- LENGTH IMPERIAL:
- 86'
- TYPE:
- HYDRAULIC
- MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- BLACK
- CONNECTOR TYPE:
- 10 MM 90° BANJO FITTING
- PRODUCT NAME:
- CLUTCH LINE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$138.95 -
MAGNUM Hydraulic Clutch Line 31974
MAGNUM
$124.95Unique natural finish stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other MAGNUM control cables and brake lines, Crystal clear outer jacket offers exceptional protection against scuffing the bike’s...11321060- SKU:
- 11321060
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- RIDING STYLE:
- STREET
- CONNECTOR TYPE:
- 10 MM 90° BANJO FITTING
- PRODUCT NAME:
- CLUTCH LINE
- UNITS:
- EACH
- BRAND SPECIFIC COLOR:
- STERLING CHROMITE II
- TYPE:
- HYDRAULIC
- LENGTH IMPERIAL:
- 74'
$124.95Qty in Cart: 0Quantity:Price:$124.95Subtotal: -
MAGNUM Clutch Line 41972
MAGNUM
$127.95Constructed with PTFE inner tubing, DuPont Kevlar aramid fiber, premium Signature Magnum braids and an outer PVC jacket, Three unique stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other Magnum...11321110- SKU:
- 11321110
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 72'
- RIDING STYLE:
- STREET
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM 90° BANJO FITTING
- PRODUCT NAME:
- CLUTCH LINE
- TYPE:
- HYDRAULIC
$127.95 -
MAGNUM Hydraulic Clutch Line - KARBONFIBR 71580
MAGNUM
$135.95MAGNUM Hydraulic Clutch Line - KARBONFIBR11321591- SKU:
- 11321591
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
$135.95 -
MAGNUM Clutch Line 31780
MAGNUM
$134.95Constructed with PTFE inner tubing, DuPont Kevlar aramid fiber, premium Signature Magnum braids and an outer PVC jacket, Three unique stainless steel transmission fittings eliminate the use of adapters, Braid color and weave match all other Magnum...11321029- SKU:
- 11321029
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- CLUTCH LINE
- UNITS:
- EACH
- BRAND SPECIFIC COLOR:
- STERLING CHROMITE II
- LENGTH IMPERIAL:
- 80'
- TYPE:
- HYDRAULIC
- CONNECTOR TYPE:
- 10 MM STRAIGHT BANJO FITTING
$134.95
