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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On Sale
Belt Drives Ltd Shoulder Bolts for 1979-1981 Harley Davidson FXEF Fat Bob CDSB-100
BELT DRIVES LTD.
MSRP: $34.95Now: $31.46Was: $34.95Enhance your BDL Belt Drive clutches with the premium Shoulder Bolts 9 Pack CDSB-100. Designed for durability and precision, these bolts ensure optimal performance and reliability in your motorcycle's drive system. Upgrade your components for a smoother...DS191021- SKU:
- DS191021
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- UNITS:
- 9 PACK
- DIAMETER:
- 9,5 MM (3/8')
- TYPE:
- CLUTCH
- LENGTH:
- 31,1 MM (1-1/4')
- LENGTH IMPERIAL:
- 1-1/4'
- PRODUCT NAME:
- SHOULDER BOLT
- RIDING STYLE:
- STREET
MSRP: $34.95Now: $31.46Was: $34.95 -
On Sale
Belt Drives Ltd Polished Domed Pulley Cover Kit for 1986-1989 Harley Davidson FLST Heritage Softail MD-100
BELT DRIVES LTD.
MSRP: $94.95Now: $85.46Was: $94.95Elevate your belt drive system with the Belt Drives Ltd. Polished Domes, designed specifically for the MD-100 model. This comprehensive kit includes everything you need for a seamless installation, ensuring both functionality and aesthetic appeal...DS191026- SKU:
- DS191026
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TOOTH COUNT:
- 47
- TYPE:
- PULLEY
- PRODUCT NAME:
- COVER
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 72
- UNITS:
- KIT
MSRP: $94.95Now: $85.46Was: $94.95 -
On Sale
Belt Drives Ltd 1.5" 65 Tooth Pulley for 1999 Harley-Davidson FLHTCI Electra Glide Classic RPP-65
BELT DRIVES LTD.
MSRP: $439.95Now: $395.96Was: $439.95Experience superior performance with the BELT DRIVES LTD. 1.50" Pulley Plain 65 Tooth RPP-65. Crafted from high-quality CNC billet aluminum, this pulley guarantees precision and durability, ensuring optimal belt engagement for various applications...DS325817- SKU:
- DS325817
- Availability:
- Ships Same Business Day
- Weight:
- 6.38 LBS
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- SOLID
- TOOTH COUNT:
- 65
- WIDTH IMPERIAL:
- 1-1/2'
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- PULLEY
MSRP: $439.95Now: $395.96Was: $439.95 -
On Sale
Belt Drives Ltd 1.5in 70 Tooth Rear Pulley for 1986-1999 Harley Davidson FLHTC Electra Glide Classic RPP-70
BELT DRIVES LTD.
MSRP: $439.95Now: $395.96Was: $439.95Experience superior performance with the BELT DRIVES LTD. 1.50" Plain Pulley featuring 70 precision-cut teeth. Crafted from high-quality CNC billet aluminum, this pulley ensures durability and a perfect fit for your belt systems. Proudly made in the U.S...DS325818- SKU:
- DS325818
- Availability:
- Ships Same Business Day
- Weight:
- 8.06 LBS
- MATERIAL:
- BILLET ALUMINUM
- TOOTH COUNT:
- 70
- MODEL:
- SOLID
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- PULLEY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
MSRP: $439.95Now: $395.96Was: $439.95 -
On Sale
Belt Drives Ltd 1.5" 65 Tooth Mesh Pulley for 1994-1999 Harley Davidson FLHR Road King RPMS-65
BELT DRIVES LTD.
MSRP: $494.95Now: $445.46Was: $494.95Experience superior performance with our 1.50" Pulley featuring 65 teeth, expertly crafted from high-quality CNC billet aluminum. Designed to meet RMA standards, this pulley ensures a flawless fit with your belts, enhancing both efficiency and durability...DS325824- SKU:
- DS325824
- Availability:
- Ships Same Business Day
- Weight:
- 4.85 LBS
- MODEL:
- MESH
- TOOTH COUNT:
- 65
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- PULLEY
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $494.95Now: $445.46Was: $494.95 -
On Sale
Belt Drives Ltd Replacement Primary Drive Belt 1980-1982 Harley-Davidson Sturgis FXB PCC-78-118
BELT DRIVES LTD.
MSRP: $266.95Now: $240.26Was: $266.95The PCC-78-118 Replacement Belt from Belt Drives Ltd. is engineered for optimal performance in BDL primary drives. Designed for durability and efficiency, this belt ensures smooth operation and enhanced power transmission, making it an essential...DS360018- SKU:
- DS360018
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- STYLE:
- RIBBED
- TOOTH COUNT:
- 78
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 1-1/8'
MSRP: $266.95Now: $240.26Was: $266.95 -
On Sale
Belt Drives Ltd Steel Drive Plate Round Dogs 2009 Harley-Davidson Dyna Fat Bob FXDF ERDS-100
BELT DRIVES LTD.
MSRP: $14.95Now: $13.46Was: $14.95Enhance the performance of your BDL Belt Drive clutches with the ERDS-100 Replacement Plate Steel Round Dogs. Designed for durability and precision, these components ensure optimal engagement and reliability during operation. Upgrade your clutch system...DS360035- SKU:
- DS360035
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- MATERIAL:
- STEEL
- UNITS:
- EACH
- PRODUCT NAME:
- STEEL PLATE
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE PLATE
MSRP: $14.95Now: $13.46Was: $14.95 -
On Sale
Belt Drives Ltd 28 Tooth Transmission Pulley for Harley Sportster 1991-2003 TPS-28
BELT DRIVES LTD.
MSRP: $202.95Now: $182.66Was: $202.95Upgrade your ride with the TPS-28 Transmission Pulley, expertly crafted from lightweight 6061 T-6 aluminum and finished with a hard anodized coating for superior durability. Designed to enhance performance, this pulley reduces weight by one-third...DS360046- SKU:
- DS360046
- Availability:
- Ships Same Business Day
- Weight:
- 2.19 LBS
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- TOOTH COUNT:
- 28
- PRODUCT NAME:
- PULLEY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $202.95Now: $182.66Was: $202.95 -
On Sale
Belt Drives Ltd 29 Tooth Transmission Pulley for 1991-2003 Harley-Davidson Sportster XLH883 TPS-29
BELT DRIVES LTD.
MSRP: $202.95Now: $182.66Was: $202.95Experience enhanced performance with the TPS-29 Transmission Pulley, expertly crafted from lightweight 6061 T-6 aluminum and treated with a hard anodized finish for superior durability. Designed for optimal efficiency, this pulley reduces weight by...DS360047- SKU:
- DS360047
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 29
- UNITS:
- EACH
MSRP: $202.95Now: $182.66Was: $202.95Qty in Cart: 0Quantity:Price:MSRP: $202.95Now: $182.66Was: $202.95Subtotal: -
On Sale
Belt Drives Ltd 30 Tooth Transmission Pulley for 1991-2003 Harley Sportster TPS-30
BELT DRIVES LTD.
MSRP: $202.95Now: $182.66Was: $202.95Experience enhanced performance with the BELT DRIVES LTD. Transmission Pulley TPS-30, expertly crafted from lightweight 6061 T-6 aluminum and finished with a hard anodized coating for superior durability. This pulley is designed to significantly reduce...DS360048- SKU:
- DS360048
- Availability:
- Ships Same Business Day
- Weight:
- 2.63 LBS
- TOOTH COUNT:
- 30
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
MSRP: $202.95Now: $182.66Was: $202.95Qty in Cart: 0Quantity:Price:MSRP: $202.95Now: $182.66Was: $202.95Subtotal: -
On Sale
Belt Drives Ltd 138 Tooth 8mm Primary Drive Belt for Harley Davidson Softail 1986-2003 BDL-138K
BELT DRIVES LTD.
MSRP: $150.95Now: $135.86Was: $150.95The BDL-138K Replacement Belt from Belt Drives Ltd. is engineered for optimal performance in BDL primary drives. Designed for durability and reliability, this belt ensures smooth operation and longevity, making it an essential component for your...DS360086- SKU:
- DS360086
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- PRODUCT NAME:
- DRIVE BELT
- WIDTH IMPERIAL:
- 1-5/8'
- STYLE:
- RIBBED
- TYPE:
- PRIMARY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TOOTH COUNT:
- 138
MSRP: $150.95Now: $135.86Was: $150.95 -
On Sale
Belt Drives Ltd 8mm Primary Belt Drive Electric Start 79-84 Harley-Davidson 61-41SE-2
BELT DRIVES LTD.
MSRP: $730.95Now: $657.86Was: $730.95Upgrade your ride with the 8mm Primary Belt Drive Kit, designed for electric start models from 1979 to 1984. This comprehensive kit includes everything you need for an efficient and reliable performance, crafted with precision for durability and ease of...DS360098- SKU:
- DS360098
- Availability:
- Ships Same Business Day
- Weight:
- 9.40 LBS
- COLOR/FINISH:
- ANODIZED
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
- THICKNESS IMPERIAL:
- 5/16'
- UNITS:
- KIT
MSRP: $730.95Now: $657.86Was: $730.95 -
On Sale
Belt Drives Ltd 8mm Primary Belt Drive Electric Start 1965-1978 61-41SE-1
BELT DRIVES LTD.
MSRP: $730.95Now: $657.86Was: $730.95Upgrade your motorcycle's performance with our premium 8mm Primary Belt Drive kit, designed specifically for models from 1965 to 1978. This robust system ensures smooth operation and enhanced durability, making it an essential addition for any serious...DS360099- SKU:
- DS360099
- Availability:
- Ships Same Business Day
- Weight:
- 10.06 LBS
- WIDTH IMPERIAL:
- 1-1/2'
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- COLOR/FINISH:
- ANODIZED
- THICKNESS IMPERIAL:
- 5/16'
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
MSRP: $730.95Now: $657.86Was: $730.95 -
On Sale
Belt Drives Ltd 8mm 1.5in Primary Belt Drive Kit for 1979-1984 Harley-Davidson FXR 61-41SK-4
BELT DRIVES LTD.
MSRP: $627.95Now: $565.16Was: $627.95Upgrade your motorcycle's performance with the BELT DRIVES LTD. 8mm Primary Belt Drive Kick Start. This premium kit is designed for durability and efficiency, featuring high-quality components crafted for optimal power transfer. Experience smoother...DS360101- SKU:
- DS360101
- Availability:
- Ships Same Business Day
- Weight:
- 8.81 LBS
- UNITS:
- KIT
- THICKNESS IMPERIAL:
- 5/16'
- WIDTH IMPERIAL:
- 1-1/2'
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 132
MSRP: $627.95Now: $565.16Was: $627.95 -
On Sale
Belt Drives Ltd 8mm 1.5in Primary Belt Drive Kit for 1965-1978 Harley-Davidson FLH 62-40SK-3
BELT DRIVES LTD.
MSRP: $627.95Now: $565.16Was: $627.95Upgrade your classic motorcycle with our high-performance 8mm Primary Belt Drive Kit, designed specifically for kick start models from 1965 to 1978. This kit includes everything you need for a smooth and reliable ride, featuring durable components...DS360102- SKU:
- DS360102
- Availability:
- Ships Same Business Day
- Weight:
- 8.69 LBS
- COLOR/FINISH:
- ANODIZED
- TOOTH COUNT:
- 132
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 5/16'
- UNITS:
- KIT
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $627.95Now: $565.16Was: $627.95 -
On Sale
Belt Drives Ltd 8mm 1.5in Primary Belt Drive Kit for 1955-1957 Harley-Davidson Hydra Glide FL 62-39SK-2
BELT DRIVES LTD.
MSRP: $627.95Now: $565.16Was: $627.95Upgrade your motorcycle's performance with our high-quality 8mm Primary Belt Drive Kit, specifically designed for kick-start models from 1955 to 1964. This kit offers a perfect blend of durability and efficiency, ensuring smooth operation and enhanced...DS360103- SKU:
- DS360103
- Availability:
- Ships Same Business Day
- Weight:
- 8.25 LBS
- COLOR/FINISH:
- ANODIZED
- TOOTH COUNT:
- 132
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 5/16'
- WIDTH IMPERIAL:
- 1-1/2'
- UNITS:
- KIT
MSRP: $627.95Now: $565.16Was: $627.95Qty in Cart: 0Quantity:Price:MSRP: $627.95Now: $565.16Was: $627.95Subtotal: -
On Sale
Belt Drives Ltd 8mm 1.5in Primary Belt Drive Kit for 1948-1954 Harley-Davidson FL 62-39TK-1
BELT DRIVES LTD.
MSRP: $627.95Now: $565.16Was: $627.95Upgrade your classic motorcycle with our high-quality 8mm Primary Belt Drive Kit, designed specifically for kick-start models from 1936 to 1954. This comprehensive kit ensures smooth power transfer and durability, featuring precision-engineered...DS360104- SKU:
- DS360104
- Availability:
- Ships Same Business Day
- Weight:
- 8.63 LBS
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- THICKNESS IMPERIAL:
- 5/16'
- UNITS:
- KIT
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
MSRP: $627.95Now: $565.16Was: $627.95 -
On Sale
Belt Drives Ltd 11mm Belt Drive Kit for 1980-1983 Harley-Davidson Touring and 1982-1983 FXR 47-31SE-5
BELT DRIVES LTD.
MSRP: $693.95Now: $624.56Was: $693.95Experience superior engineering with our 11mm Belt Drive featuring an Idler Gear and Electric Start. This 5-speed system is designed for optimal performance, ensuring smooth operation and easy maintenance. Crafted in the U.S.A., it offers durability and...DS360105- SKU:
- DS360105
- Availability:
- Ships Same Business Day
- Weight:
- 11.38 LBS
- COLOR/FINISH:
- ANODIZED
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- UNITS:
- KIT
MSRP: $693.95Now: $624.56Was: $693.95 -
On Sale
Belt Drives Ltd Transmission Pulley 31 Tooth for 1995-2006 Harley-Davidson Softail FLSTN TP-31
BELT DRIVES LTD.
MSRP: $202.95Now: $182.66Was: $202.95Elevate your ride with the BELT DRIVES LTD. Transmission Pulley TP-31, crafted from high-quality 6061 T-6 aluminum and finished with a hard anodized coating for exceptional durability. Designed to be one-third the weight of stock pulleys, this pulley...DS360166- SKU:
- DS360166
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- TOOTH COUNT:
- 31
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $202.95Now: $182.66Was: $202.95 -
On Sale
Belt Drives Ltd Replacement Primary Belt 11mm 99 Teeth for Harley-Davidson FL Models BDL-1185
BELT DRIVES LTD.
MSRP: $132.95Now: $119.66Was: $132.95The BDL-1185 Replacement Belt from Belt Drives Ltd. is engineered for optimal performance and durability in BDL primary drives. This high-quality belt ensures a reliable connection, enhancing the efficiency of your machinery. Designed with precision, it...DS360009- SKU:
- DS360009
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- STYLE:
- RIBBED
- PRODUCT NAME:
- DRIVE BELT
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 99
- UNITS:
- EACH
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $132.95Now: $119.66Was: $132.95
