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
Belt Drives Ltd Inner Primary Spacer for Harley-Davidson Softail 1986-2006 PS-1000
BELT DRIVES LTD.
MSRP: $98.95Now: $89.06Was: $98.95If you're running fat tires or a wide frame setup on your Softail, precise primary alignment is critical to engine longevity and smooth power delivery. The Belt Drives Ltd Inner Primary Spacer PS-1000 eliminates gaps between your inner primary and motor,...22145004- SKU:
- 22145004
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- POLISHED
- WIDTH IMPERIAL:
- 1'
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- SPACER
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- INNER PRIMARY
MSRP: $98.95Now: $89.06Was: $98.95 -
On Sale
Belt Drives Ltd Starter Pinion Gear for Harley Davidson FLSTFI Fat Boy 2001-2006 PG-100
BELT DRIVES LTD.
MSRP: $88.95Now: $80.06Was: $88.95If you're running a BDL Belt Drive clutch system on your Fat Boy, your starter pinion gear needs to match that precision—and the PG-100 is engineered specifically for that job. A worn or incompatible pinion gear leads to hard starts, grinding noise, and...21100067- SKU:
- 21100067
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- LENGTH:
- 82,6 MM (3-1/4')
- LENGTH IMPERIAL:
- 3-1/4'
- TOOTH COUNT:
- 9
- LENGTH METRIC:
- 82.6 MM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PINION GEAR
- UNITS:
- KIT
MSRP: $88.95Now: $80.06Was: $88.95 -
On Sale
Belt Drives Ltd Compensator Sprocket 24 Tooth Harley-Davidson Softail 1986-2006 CS-24A-1
BELT DRIVES LTD.
MSRP: $136.95Now: $123.26Was: $136.95The Belt Drives Ltd Compensator Sprocket delivers measurable improvements in power delivery and drivetrain efficiency by eliminating traditional spring-based designs. This three-piece construction reduces unsprung weight while maintaining precise...11015002- SKU:
- 11015002
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- RIDING STYLE:
- STREET
- TYPE:
- COMPENSATING
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 24
- UNITS:
- EACH
MSRP: $136.95Now: $123.26Was: $136.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 140-Tooth 24mm Harley Touring 2007-2025 PCC-140-1
BELT DRIVES LTD.
MSRP: $224.95Now: $202.46Was: $224.95If you're running a Harley Touring, your rear drive belt is one of the most critical components separating smooth, reliable operation from catastrophic failure on the road. The Belt Drives Ltd 140-Tooth belt delivers the durability and precision fit your...12040114- SKU:
- 12040114
- Availability:
- Ships Same Business Day
- Weight:
- 1.84 LBS
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 140
- TYPE:
- REAR DRIVE
- UNITS:
- EACH
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
MSRP: $224.95Now: $202.46Was: $224.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 127 Tooth 1 1/2 Inch Harley-Davidson Softail 1993 PCCB-127
BELT DRIVES LTD.
MSRP: $336.95Now: $303.26Was: $336.95If you're running a wide tire setup or upgrading to a Karata® system on your Harley Softail, belt durability becomes critical—and OEM replacements often fall short under sustained torque loads. This 127-tooth rear drive belt delivers the strength and...12040116- SKU:
- 12040116
- Availability:
- Ships Same Business Day
- Weight:
- 2.29 LBS
- MATERIAL:
- X7N CARBON
- UNITS:
- EACH
- PRODUCT NAME:
- BELT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 127
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $336.95Now: $303.26Was: $336.95Qty in Cart: 0Quantity:Price:MSRP: $336.95Now: $303.26Was: $336.95Subtotal: -
On Sale
Belt Drives Ltd Rear Drive Belt 135-Tooth 1 1/2" 1984-1996 Harley-Davidson Touring PCCB-135
BELT DRIVES LTD.
MSRP: $355.95Now: $320.36Was: $355.95Stock belt drives can slip under sustained high-torque acceleration and demand frequent replacement—compromises that cost you track time and reliability. The Belt Drives Ltd 135-tooth rear drive belt delivers the load-bearing capacity and durability your...12040117- SKU:
- 12040117
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 135
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- X7N CARBON
MSRP: $355.95Now: $320.36Was: $355.95Qty in Cart: 0Quantity:Price:MSRP: $355.95Now: $320.36Was: $355.95Subtotal: -
On Sale
Belt Drives Ltd Rear Drive Belt 136-Tooth 1 1/8in Harley-Davidson FXRT Sport Glide 1985-1992 PCCB-136-118
BELT DRIVES LTD.
MSRP: $251.95Now: $226.76Was: $251.95The stock belt on your FXRT Sport Glide won't last forever—premature wear, inconsistent performance, and potential breakdowns are inevitable with inferior materials. This Belt Drives Ltd rear drive belt uses Gates' advanced carbon X3N compound to deliver...12040119- SKU:
- 12040119
- Availability:
- Ships Same Business Day
- Weight:
- 1.91 LBS
- TOOTH COUNT:
- 136
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $251.95Now: $226.76Was: $251.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 126-Tooth 1 1/8in Harley-Davidson 1984-1986 FXWG PCCB-126-118
BELT DRIVES LTD.
MSRP: $251.95Now: $226.76Was: $251.95A reliable rear drive belt is foundational to consistent power delivery and longevity in any high-performance build. The Belt Drives Ltd 126-tooth belt uses Gates carbon X3N material to resist wear, humidity, and heat—critical factors for Harley-Davidson...12040120- SKU:
- 12040120
- Availability:
- Ships Same Business Day
- Weight:
- 1.91 LBS
- TOOTH COUNT:
- 126
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
- TYPE:
- DRIVE
- UNITS:
- EACH
MSRP: $251.95Now: $226.76Was: $251.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 130-Tooth 1 1/8in Harley-Davidson Softail 1995-2006 PCCB-130-118
BELT DRIVES LTD.
MSRP: $265.95Now: $239.36Was: $265.95If you're running wider rubber on your Softail or pushing higher horsepower through the drivetrain, your factory belt needs an upgrade that can handle the increased load without slipping or premature wear. The Belt Drives Ltd 130-tooth rear drive belt...12040121- SKU:
- 12040121
- Availability:
- Ships Same Business Day
- Weight:
- 1.96 LBS
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 130
- UNITS:
- EACH
MSRP: $265.95Now: $239.36Was: $265.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 133-Tooth 1 1/8in Harley-Davidson Dyna 1993-1999 PCCB-133-118
BELT DRIVES LTD.
MSRP: $273.95Now: $246.56Was: $273.95If you're running a wide tire setup or planning a conversion on your Dyna, belt slippage and premature wear will undermine your build. This 133-tooth rear drive belt delivers the torque capacity and durability you need for aggressive riding and custom...12040122- SKU:
- 12040122
- Availability:
- Ships Same Business Day
- Weight:
- 2.14 LBS
- TOOTH COUNT:
- 133
- UNITS:
- EACH
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT
- WIDTH IMPERIAL:
- 1-1/8'
MSRP: $273.95Now: $246.56Was: $273.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 139 Tooth 1 1/2 Inch Harley-Davidson 1993 PCC-139
BELT DRIVES LTD.
MSRP: $375.95Now: $338.36Was: $375.95OEM-quality rear drive belts experience wear and slippage over time, especially when running wider tires or custom applications. This 139-tooth belt from Belt Drives Ltd combines high-torque polyurethane construction with aramid tensile reinforcement to...12040124- SKU:
- 12040124
- Availability:
- Ships Same Business Day
- Weight:
- 2.33 LBS
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- BELT
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 139
MSRP: $375.95Now: $338.36Was: $375.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 126-Tooth 1-1/2in Harley-Davidson 1982-1984 FLH PCCB-126
BELT DRIVES LTD.
MSRP: $314.00Now: $264.56Was: $314.00If you're running a 1982-1984 FLH, your rear drive belt endures constant torque cycles and environmental stress that demand reliability over compromise. The Belt Drives Ltd PCCB-126 uses Gates carbon X3N material to deliver the strength and longevity...12040126- SKU:
- 12040126
- Availability:
- Ships Same Business Day
- Weight:
- 2.22 LBS
- TYPE:
- DRIVE
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- BELT
- TOOTH COUNT:
- 126
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $314.00Now: $264.56Was: $314.00 -
On Sale
Belt Drives Ltd Rear Drive Belt 128-Tooth 1 1/2" Harley Davidson 1993 FLSTC PCCB-128
BELT DRIVES LTD.
MSRP: $344.95Now: $310.46Was: $344.95A worn or compromised rear drive belt can undermine your entire powertrain's efficiency and reliability. The BDL 128-Tooth Rear Drive Belt delivers consistent power transfer with minimal slippage, keeping your 1993 FLSTC running at peak performance mile...12040129- SKU:
- 12040129
- Availability:
- Ships Same Business Day
- Weight:
- 2.24 LBS
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 128
- TYPE:
- DRIVE
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
MSRP: $344.95Now: $310.46Was: $344.95Qty in Cart: 0Quantity:Price:MSRP: $344.95Now: $310.46Was: $344.95Subtotal: -
On Sale
Belt Drives Ltd Rear Drive Belt for Harley-Davidson Softail 1993 PCCB-125-118
BELT DRIVES LTD.
MSRP: $251.95Now: $226.76Was: $251.95If you're running wide tires on your Softail or pushing higher torque loads, your stock belt won't cut it. This 125-tooth rear drive belt from Belt Drives Ltd is engineered specifically for high-torque applications, combining premium polyurethane...12040130- SKU:
- 12040130
- Availability:
- Ships Same Business Day
- Weight:
- 1.87 LBS
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- TOOTH COUNT:
- 125
MSRP: $251.95Now: $226.76Was: $251.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 136 Tooth 1 1/2 Inch Harley Davidson 1991-2003 PCCB-136
BELT DRIVES LTD.
MSRP: $326.95Now: $294.26Was: $326.95A properly functioning rear drive belt is critical to maintaining consistent power delivery and preventing catastrophic drivetrain failure on your Harley. This Belt Drives Ltd unit combines proven Gates carbon X3N material with precision engineering to...12040131- SKU:
- 12040131
- Availability:
- Ships Same Business Day
- Weight:
- 2.36 LBS
- MATERIAL:
- X7N CARBON
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 136
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- BELT
- TYPE:
- DRIVE
MSRP: $326.95Now: $294.26Was: $326.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 139-Tooth 1-1/8" for Harley-Davidson Softail 1993 PCCB-139-118
BELT DRIVES LTD.
MSRP: $299.95Now: $269.96Was: $299.95If you're running a wide tire setup on your Softail or pushing higher horsepower through the drivetrain, your stock belt won't cut it. This 139-tooth rear drive belt combines high-torque polyurethane construction with aramid tensile reinforcement to...12040132- SKU:
- 12040132
- Availability:
- Ships Same Business Day
- Weight:
- 2.07 LBS
- MATERIAL:
- X7N CARBON
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 139
- WIDTH IMPERIAL:
- 1-1/8'
MSRP: $299.95Now: $269.96Was: $299.95 -
On Sale
Belt Drives Ltd Rear Drive Belt 152 Tooth 1 Inch for Indian Chieftain 2014-2019 PCC-152-1
BELT DRIVES LTD.
MSRP: $324.95Now: $292.46Was: $324.95A worn or undersized rear belt will rob your Indian Chieftain of reliable power delivery and force premature component wear. BDL's 152-tooth belt delivers the precise fitment and material engineering your bike demands, keeping your final drive running...12040232- SKU:
- 12040232
- Availability:
- Ships Same Business Day
- Weight:
- 1.94 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 152
- WIDTH IMPERIAL:
- 1'
- TYPE:
- REAR DRIVE
- MATERIAL:
- X3N CARBON
- PRODUCT NAME:
- BELT
- UNITS:
- EACH
MSRP: $324.95Now: $292.46Was: $324.95 -
On Sale
Belt Drives Ltd Outboard Bearing for 3" Belt Drive Clutches TFBSB-100
BELT DRIVES LTD.
MSRP: $28.95Now: $26.06Was: $28.95If you're running a BDL Belt Drive clutch system, the outboard bearing is critical to maintaining smooth engagement and preventing premature wear under load. A worn or inadequate bearing introduces friction, noise, and can compromise the entire clutch...11200034- SKU:
- 11200034
- Availability:
- Ships Same Business Day
- Weight:
- 0.84 LBS
- PRODUCT NAME:
- OUTBOARD BEARING
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
MSRP: $28.95Now: $26.06Was: $28.95 -
On Sale
Belt Drives Ltd 3" Primary Belt Cover 2025 Harley-Davidson Touring BDC-4C
BELT DRIVES LTD.
MSRP: $687.95Now: $619.16Was: $687.95If you're running a 3" Belt Drives Ltd. open belt drive system, a matching primary belt cover completes the factory-finished look while protecting your drivetrain components from road debris and weather exposure. The BDC-4C delivers the precision fitment...11200049- SKU:
- 11200049
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $687.95Now: $619.16Was: $687.95 -
On Sale
Belt Drives Ltd Clutch Basket 72 Tooth 3" Belt 72-3EX
BELT DRIVES LTD.
MSRP: $544.95Now: $490.46Was: $544.95A precision-engineered clutch basket is critical to maintaining consistent engagement and preventing slippage in high-demand belt drive systems. This Belt Drives Ltd unit delivers the tight tolerances and material durability required for reliable...11200051- SKU:
- 11200051
- Availability:
- Ships Same Business Day
- Weight:
- 7.40 LBS
- NUMBER OF TEETH:
- 72
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- CLUTCH BASKET
- COLOR/FINISH:
- ANODIZED
MSRP: $544.95Now: $490.46Was: $544.95
