Harley Primary Drive Systems and Parts
Harley-Davidson Primary Drive Systems & Parts at JJ Motorsports
Upgrade your Harley's primary drive with premium belt drive systems and components from JJ Motorsports, featuring high-strength pulleys, replacement belts, and complete kits for smoother power transfer, reduced maintenance, and classic open-primary style on Evo, Twin Cam, and Big Twin models. These durable parts deliver reliable performance and timeless looks.
Shop Belt Drives Ltd primary systems for race-proven quality. Explore related categories such as Harley drivetrain for clutches and chains, or Harley for exhaust and suspension to complete your open-primary build.
Top Harley-Davidson Primary Drive Systems & Parts
- Belt Drives Ltd Transmission Pulley TP-30 – 30-tooth rear transmission pulley; precision-machined for belt drive conversions on Evo and Twin Cam.
- Belt Drives Ltd Replacement Belt BDL-132 – High-strength 132-tooth replacement belt; 8mm pitch for long life on open primary systems.
- Belt Drives Ltd Belt Drive Evo 16BH-2C – Complete 2-inch belt drive kit for Evo engines; includes clutch, pulleys, and guard for classic open-primary style.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
On Sale
Belt Drives Ltd. Monster Top Fuel Belt Drive Kit for Harley-Davidson Softail 1990-2006 TF-2000
BELT DRIVES LTD.
MSRP: $4,676.92Now: $4,209.23Was: $4,676.92If you're running a high-performance Softail and want to eliminate the complexity of chain maintenance while gaining reliable power delivery, the Belt Drives Ltd. Monster Top Fuel Belt Drive Kit delivers the efficiency and durability that separates...11200173- SKU:
- 11200173
- Availability:
- Ships Same Business Day
- Weight:
- 51.60 LBS
- MATERIAL:
- STEEL
- UNITS:
- KIT
- MODEL:
- MONSTER
- PRODUCT NAME:
- BELT DRIVE KIT
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $4,676.92Now: $4,209.23Was: $4,676.92 -
On Sale
Belt Drives Ltd 2" Belt Drive Kit for Harley Softail 1990-2006 Black EV-700B
BELT DRIVES LTD.
MSRP: $4,731.38Now: $4,258.24Was: $4,731.38If you're running a Softail and tired of stock belt-drive compromises, the Belt Drives Ltd EV-700B delivers the durability and customization you need without sacrificing reliability. The all-billet construction handles increased load and vibration while...11200320- SKU:
- 11200320
- Availability:
- Ships Same Business Day
- Weight:
- 18.10 LBS
- TOOTH COUNT:
- 142
- MATERIAL:
- BILLET ALUMINUM
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
MSRP: $4,731.38Now: $4,258.24Was: $4,731.38 -
On Sale
Belt Drives Ltd Clutch Adjuster Screw with Jam Nut for 1990-Up Models CDAS-100A
BELT DRIVES LTD.
MSRP: $39.08Now: $35.17Was: $39.08Precise clutch adjustment is critical for consistent engagement and consistent power delivery—especially in high-performance applications where even minor slippage costs you time and reliability. This Belt Drives Ltd clutch adjuster screw eliminates...11200321- SKU:
- 11200321
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- ADJUSTING SCREW
- TYPE:
- CLUTCH
MSRP: $39.08Now: $35.17Was: $39.08 -
On Sale
Belt Drives Ltd Motor Plate Bearing for 1990-2006 Harley-Davidson Softail FXST MPB-9
BELT DRIVES LTD.
MSRP: $116.00Now: $104.40Was: $116.00If you're running a BDL Belt Drive clutch system on your Softail, the Motor Plate Bearing MPB-9 is critical to maintaining smooth engagement and reliable power transfer. Worn or inadequate bearings introduce friction, noise, and premature...11200322- SKU:
- 11200322
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $116.00Now: $104.40Was: $116.00 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2007-2015 Harley-Davidson Touring TC2PB-2-B
BELT DRIVES LTD.
MSRP: $4,372.92Now: $3,935.63Was: $4,372.92If you're running high-horsepower on your 2007-2015 Touring model, belt slippage and power loss are real concerns. Belt Drives Ltd's 2" open belt drive kit eliminates those weaknesses with a precision-engineered two-piece motor plate and matched pulley...11200355- SKU:
- 11200355
- Availability:
- Ships Same Business Day
- Weight:
- 37.30 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- SIZE IMPERIAL:
- 2'
- TOOTH COUNT:
- 69
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
MSRP: $4,372.92Now: $3,935.63Was: $4,372.92 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit Chrome 2007-2013 Harley-Davidson Street Glide FLHX TC2PB-2-C
BELT DRIVES LTD.
MSRP: $4,664.00Now: $4,197.60Was: $4,664.00If you're running high-horsepower on your Street Glide, your stock belt drive isn't built for sustained performance. Belt Drives Ltd's 2" open belt kit delivers the engagement precision and thermal stability your engine demands, while the chrome finish...11200356- SKU:
- 11200356
- Availability:
- Ships Same Business Day
- Weight:
- 39.10 LBS
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 2'
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- TOOTH COUNT:
- 69
- SIZE IMPERIAL:
- 2'
MSRP: $4,664.00Now: $4,197.60Was: $4,664.00 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit Black 2014-2016 Harley-Davidson FLHTCU TC2PBH-2-B
BELT DRIVES LTD.
MSRP: $4,392.92Now: $3,953.63Was: $4,392.92If you're running a high-performance motor in your 2014-2016 FLHTCU, belt drive efficiency directly impacts throttle response and overall power delivery. Belt Drives Ltd's 2" Open Belt Drive Kit delivers a proven 1.32:1 final drive ratio that maximizes...11200357- SKU:
- 11200357
- Availability:
- Ships Same Business Day
- Weight:
- 36.98 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- SIZE IMPERIAL:
- 2'
- TOOTH COUNT:
- 69
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
MSRP: $4,392.92Now: $3,953.63Was: $4,392.92 -
On Sale
Belt Drives Ltd 2in Open Belt Drive Kit Black 2007-2017 Harley-Davidson Softail TC2PS-2-B
BELT DRIVES LTD.
MSRP: $4,439.08Now: $3,995.17Was: $4,439.08If you're running serious horsepower on your Softail, your drivetrain needs to match that output. The Belt Drives Ltd 2" Open Belt Drive Kit delivers the precision engineering and reliability that high-performance motors demand, while the open design...11200359- SKU:
- 11200359
- Availability:
- Ships Same Business Day
- Weight:
- 16.35 LBS
- UNITS:
- KIT
- SIZE IMPERIAL:
- 2'
- TOOTH COUNT:
- 69
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 2'
MSRP: $4,439.08Now: $3,995.17Was: $4,439.08 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2017-2020 Harley-Davidson Touring Models EVO-16BH-2C
BELT DRIVES LTD.
MSRP: $4,186.95Now: $3,768.26Was: $4,186.95If you're running a high-horsepower build on your Touring model, your factory drive system has limits. The Belt Drives Ltd EVO-16BH-2C delivers the reliability and engagement needed for serious power while keeping the classic open belt aesthetic that...11200400- SKU:
- 11200400
- Availability:
- Ships Same Business Day
- Weight:
- 42.03 LBS
- COLOR/FINISH:
- CHROME
- SIZE IMPERIAL:
- 2'
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 52
- TOOTH COUNT:
- 69
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- PRIMARY BELT DRIVE
- UNITS:
- KIT
MSRP: $4,186.95Now: $3,768.26Was: $4,186.95Qty in Cart: 0Quantity:Price:MSRP: $4,186.95Now: $3,768.26Was: $4,186.95Subtotal: -
On Sale
Belt Drives Ltd 1-1/2" Belt Drive 4-Speed 1970-1983 Shovelhead EVBB-3T-4
BELT DRIVES LTD.
MSRP: $1,359.85Now: $1,223.87Was: $1,359.85If you're running a 1970-1983 Shovelhead, this Belt Drives Ltd. primary drive kit delivers the reliability and performance you need for consistent power transfer and smooth clutch engagement. The complete system eliminates the guesswork of sourcing...11200248- SKU:
- 11200248
- Availability:
- Ships Same Business Day
- Weight:
- 14.80 LBS
- MATERIAL:
- KEVLAR
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- STEEL
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $1,359.85Now: $1,223.87Was: $1,359.85 -
On Sale
Belt Drives Ltd 1-5/8" Belt Drive for 1990-1993 Harley-Davidson FXR Super Glide II EVBB-1SL
BELT DRIVES LTD.
MSRP: $1,359.85Now: $1,223.87Was: $1,359.85If you're running a 1990-1993 FXR Super Glide II and want to eliminate the maintenance headaches of chain drive while gaining reliable, quiet power delivery, a belt drive system is the smart upgrade. Belt Drives Ltd's 1-5/8" kit delivers the durability...11200249- SKU:
- 11200249
- Availability:
- Ships Same Business Day
- Weight:
- 16.45 LBS
- WIDTH IMPERIAL:
- 1-5/8'
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- UNITS:
- EACH
- MATERIAL:
- KEVLAR
- MATERIAL:
- STEEL
MSRP: $1,359.85Now: $1,223.87Was: $1,359.85 -
On Sale
Belt Drives Ltd 1-5/8" Belt Drive 4-Speed 1980-1984 Harley-Davidson FXWG FXB FLH EVBB-3TRB
BELT DRIVES LTD.
MSRP: $1,359.85Now: $1,223.87Was: $1,359.85If you're running a 1980-1984 Harley big twin, a quality belt drive system is essential for reliable power delivery and long-term durability. The Belt Drives Ltd EVBB-3TRB replaces your stock chain with a low-maintenance belt drive that reduces...11200250- SKU:
- 11200250
- Availability:
- Ships Same Business Day
- Weight:
- 15.75 LBS
- MATERIAL:
- KEVLAR
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 1-5/8'
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
MSRP: $1,359.85Now: $1,223.87Was: $1,359.85 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit Polished 2007-2009 FLT Models EVO-13B-2
BELT DRIVES LTD.
MSRP: $3,355.95Now: $3,020.36Was: $3,355.95A quality belt drive system is fundamental to reliable power transmission and smooth operation on modern FLT models. The Belt Drives Ltd 2" Open Kit delivers a bolt-on solution with factory-grade components, eliminating drivetrain slop while maintaining...11200233- SKU:
- 11200233
- Availability:
- Ships Same Business Day
- Weight:
- 34.70 LBS
- STYLE:
- RIBBED
- TOOTH COUNT:
- 132
- UNITS:
- KIT
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
MSRP: $3,355.95Now: $3,020.36Was: $3,355.95Qty in Cart: 0Quantity:Price:MSRP: $3,355.95Now: $3,020.36Was: $3,355.95Subtotal: -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 2007-2013 Harley-Davidson FLHX Street Glide EVO-13B-2B
BELT DRIVES LTD.
MSRP: $4,372.92Now: $3,935.63Was: $4,372.92A quality belt drive system is fundamental to smooth power delivery and reliable operation on any EVO-powered cruiser. The Belt Drives Ltd 2" Open Belt Drive Kit eliminates the compromises of OEM setups with a ball-bearing lockup clutch that delivers...11200234- SKU:
- 11200234
- Availability:
- Ships Same Business Day
- Weight:
- 34.70 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- STYLE:
- RIBBED
- PRODUCT NAME:
- BELT DRIVE KIT
- TOOTH COUNT:
- 132
- WIDTH IMPERIAL:
- 2'
MSRP: $4,372.92Now: $3,935.63Was: $4,372.92 -
On Sale
Belt Drives Ltd Front Pulley Locking Plate for Harley-Davidson 1985-2006 FLH Models MPLP-100
BELT DRIVES LTD.
MSRP: $43.85Now: $39.47Was: $43.85A secure front pulley is non-negotiable for reliable belt drive performance on your classic Harley. The MPLP-100 locking plate eliminates pulley creep and unwanted movement, protecting your drivetrain from premature wear and potential failure. If you're...11200235- SKU:
- 11200235
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- TYPE:
- PRIMARY
- LENGTH:
- 38,0 MM (1-1/2')
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 1-1/2'
- PRODUCT NAME:
- LOCKING PLATE
- LENGTH METRIC:
- 38.0 MM
MSRP: $43.85Now: $39.47Was: $43.85 -
On Sale
Belt Drives Ltd 2.75" Drive Belt Polished 2007-Up Softail and 2006-Up Dyna EVO-8S
BELT DRIVES LTD.
MSRP: $3,694.77Now: $3,325.29Was: $3,694.77Belt drive systems are critical to power delivery and overall drivetrain reliability—a weak link here directly impacts acceleration, engagement smoothness, and longevity. The Belt Drives Ltd 2.75" Drive Belt eliminates the guesswork with a purpose-built...11200210- SKU:
- 11200210
- Availability:
- Ships Same Business Day
- Weight:
- 36.00 LBS
- UNITS:
- KIT
- WIDTH IMPERIAL:
- 2-3/4'
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- BELT DRIVE KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- POLISHED
- TOOTH COUNT:
- 142
MSRP: $3,694.77Now: $3,325.29Was: $3,694.77 -
On Sale
Belt Drives Ltd 2" Open Belt Drive Kit for 1970-1978 Harley-Davidson Shovelhead SH-500
BELT DRIVES LTD.
MSRP: $3,113.69Now: $2,802.32Was: $3,113.69If you're running a classic Shovelhead, belt drive reliability directly impacts your power delivery and overall ride quality. This complete kit eliminates the weak points of chain drive systems—no more stretch, slack, or maintenance headaches. With a...11200212- SKU:
- 11200212
- Availability:
- Ships Same Business Day
- Weight:
- 29.80 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- KEVLAR
- PRODUCT NAME:
- BELT DRIVE KIT
- WIDTH IMPERIAL:
- 2'
- STYLE:
- RIBBED
- TOOTH COUNT:
- 132
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
MSRP: $3,113.69Now: $2,802.32Was: $3,113.69 -
On Sale
Belt Drives Ltd 8mm 1 1/2in Belt Drive Kit for 1941-1954 Harley-Davidson FL Models 62-39TK-1
BELT DRIVES LTD.
MSRP: $764.62Now: $688.16Was: $764.62If you're running a classic flathead or panhead Harley from the pre-1955 era, a quality belt drive system is essential for reliable power transfer and longevity. Belt Drives Ltd.'s 8mm kit delivers the precise pulley ratios and durable components needed...11200422- SKU:
- 11200422
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
MSRP: $764.62Now: $688.16Was: $764.62 -
On Sale
Belt Drives Ltd Front Pulley 40T 8mm for 1955-1983 Harley-Davidson Touring and 1971-1983 FXR 40SI
BELT DRIVES LTD.
MSRP: $238.00Now: $214.20Was: $238.00A properly engineered front pulley is critical for maintaining belt drive efficiency and power transmission in your Harley or FXR. The Belt Drives Ltd 40SI delivers the precision machining and durable construction required for reliable performance,...11200425- SKU:
- 11200425
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 40
- PRODUCT NAME:
- FRONT PULLEY
- UNITS:
- EACH
MSRP: $238.00Now: $214.20Was: $238.00Qty in Cart: 0Quantity:Price:MSRP: $238.00Now: $214.20Was: $238.00Subtotal: -
On Sale
Belt Drives Ltd 41T Front Pulley for 1971-1983 Harley-Davidson FXR 1955-1983 Touring 41SI
BELT DRIVES LTD.
MSRP: $238.00Now: $214.20Was: $238.00If you're running a classic FXR or Touring model, a worn or undersized front pulley directly impacts your engine's efficiency and belt drive reliability. The Belt Drives Ltd 41T pulley restores proper drive ratios and eliminates slack, ensuring...11200429- SKU:
- 11200429
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- PRODUCT NAME:
- FRONT PULLEY
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 41
MSRP: $238.00Now: $214.20Was: $238.00Qty in Cart: 0Quantity:Price:MSRP: $238.00Now: $214.20Was: $238.00Subtotal:
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Primary Drive Systems and Parts
- Compatibility: Ensure parts fit your Harley's model (e.g., Evo, Twin Cam, Big Twin, Softail 1986-2006, FL/FLH 1946-1984, FX 1972-1984, Sportster/Buell 1991-2003). Use the vehicle selector for year-specific matches, including belt widths (1-1/2" to 3") and pitches (8mm to 14mm) to avoid power transfer issues.
- Type of Use: For classic open-primary style or kick-start setups, choose complete belt drive kits; street performance benefits from lightweight pulleys and tensioners for smoother operation and reduced weight in daily riding.
- Components and Upgrades: Select belts (132-144 tooth, ribbed), pulleys (30-70 tooth, front/rear), kits (with clutches, guards), tensioners (manual billet), spacers (starter), or adjuster shoes. Focus on hard anodized aluminum for durability and high-strength designs for reliable performance.
- Brand and Quality: Opt for Belt Drives Ltd (BDL) for premium kits and pulleys, Powerstands Racing for chain tensioners, Terry Components for starter spacers, or Baker Drivetrain for adjuster shoes. Prioritize USA-made billet aluminum and anodized finishes for corrosion resistance and longevity.
- Installation and Cost: Most parts are bolt-on with OEM hardware for easy DIY setup; kits may require additional components. Prices range from $49 for adjuster shoes to $651.95 for complete kits—factor in free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these primary drive systems support? Systems fit models like Softail (1986-2006), FL/FLH (1946-1984), FX (1972-1984), Sportster/Buell (1991-2003), and more—use the year/make/model filter for exact compatibility.
- How do belt drive kits improve performance? They provide smoother power transfer, reduced maintenance, and classic open-primary looks with high-strength pulleys and belts for durability.
- What is typically included in a belt drive kit? Kits like BDL's include clutches, pulleys, guards, and belts (e.g., 132-144 tooth, 8mm-14mm pitch)—check details for kick-start or specific widths.
- Are tensioners necessary for primary chains? Yes, manual tensioners like Powerstands Racing prevent over-tightening, with billet aluminum construction for easy adjustments.
- What if a part doesn't fit my Harley? Verify model, year, and specifications (e.g., tooth count, width) before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related drivetrain parts? Yes—explore clutches, belts, sprockets, or full drivetrain kits in the Harley drivetrain category to complement your primary drive upgrade.
