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
-
ANDREWS 1st Gear Set 296110
ANDREWS
$219.95A properly functioning first gear is critical for reliable launch control and smooth engagement in any high-performance transmission system. The ANDREWS 1st Gear Set 296110 delivers precision-machined durability to handle repeated acceleration cycles...DS199531- SKU:
- DS199531
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- STYLE:
- CLOSE RATIO
- TYPE:
- FIRST GEAR
- FIRST GEAR RATIO:
- 2.94:1
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- PRODUCT NAME:
- GEAR SET
- RIDING STYLE:
- STREET
- UNITS:
- SET
$219.95 -
ANDREWS Transmission Gear - 1st Gear 296120
ANDREWS
$123.97A worn or damaged first gear is the weak link in any high-performance transmission system, forcing you to compromise on acceleration and risking catastrophic drivetrain failure. The ANDREWS Transmission Gear 1st Gear (296120) delivers OEM-quality...11060059- SKU:
- 11060059
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- FIRST GEAR
- TRANSMISSION TYPE:
- 5 SPEED
- PRODUCT NAME:
- GEAR
- TOOTH COUNT:
- 31
$123.97Qty in Cart: 0Quantity:Price:$123.97Subtotal: -
ANDREWS Mainshaft - 1st Gear 296125
ANDREWS
$116.95A worn or damaged first gear on your mainshaft directly impacts acceleration response and overall powertrain reliability. The ANDREWS Mainshaft 1st Gear is precision-engineered to restore OEM performance standards while handling repeated high-load shifts...11060060- SKU:
- 11060060
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- FIRST GEAR RATIO:
- 3.24:1
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 18
- TYPE:
- FIRST GEAR
- PRODUCT NAME:
- GEAR
$116.95Qty in Cart: 0Quantity:Price:$116.95Subtotal: -
ANDREWS 5-Speed Mainshaft 296800
ANDREWS
$331.95If you're rebuilding a transmission or upgrading to a higher-performance setup, the ANDREWS 5-Speed Mainshaft 296800 is engineered to handle increased torque and sustained RPM loads that stock components simply can't manage. This precision-manufactured...11060061- SKU:
- 11060061
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- TYPE:
- TRANSMISSION
- STYLE:
- CHAIN DRIVE
- STYLE:
- 5 SPEED
- PRODUCT NAME:
- MAINSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$331.95 -
ANDREWS Mainshaft - 3rd Gear 299103
ANDREWS
$129.95If you're experiencing worn gear engagement, slipping, or inconsistent power delivery through your transmission's mid-range, the ANDREWS Mainshaft 3rd Gear 299103 restores precise shifting and reliable torque transfer. This OEM-specification component...11060062- SKU:
- 11060062
- Availability:
- Ships Same Business Day
- Weight:
- 1.04 LBS
- PRODUCT NAME:
- GEAR
- TYPE:
- THIRD GEAR
- UNITS:
- EACH
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 28
- STYLE:
- STANDARD RATIO
$129.95Qty in Cart: 0Quantity:Price:$129.95Subtotal: -
ANDREWS 4th Gear Mainshaft 204280
ANDREWS
$210.95If you're building or rebuilding a high-performance transmission, the ANDREWS 4th Gear Mainshaft is a critical component that directly impacts power delivery and durability under load. This OEM-quality mainshaft is engineered to handle sustained boost...DS199409- SKU:
- DS199409
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- STYLE:
- STANDARD RATIO
- UNITS:
- EACH
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- TYPE:
- MAIN DRIVE
$210.95 -
ANDREWS Mainshaft Drive Gear - 5th Gear 299105
ANDREWS
$288.95If you're pushing your transmission to higher RPMs or upgrading to a performance build, your factory 5th gear may not deliver the durability or precision you need. The ANDREWS Mainshaft Drive Gear 5th Gear (299105) is engineered for racers and...DS199469- SKU:
- DS199469
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- UNITS:
- EACH
- TOOTH COUNT:
- 33
- TYPE:
- MAIN DRIVE
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD RATIO
$288.95 -
ANDREWS Pulley - 30 Tooth 290304
ANDREWS
$211.95The ANDREWS 30-tooth pulley delivers precise belt drive control for custom cruisers and touring bikes where stock ratios don't cut it. Machined from heat-treated, gear-quality steel, this U.S.-made component ensures reliability under sustained load and...DS199477- SKU:
- DS199477
- Availability:
- Ships Same Business Day
- Weight:
- 5.08 LBS
- MATERIAL:
- STEEL
- MODEL:
- GOOD ACCELERATION
- PRODUCT NAME:
- PULLEY
- TOOTH COUNT:
- 30
- TRANSMISSION TYPE:
- 5 SPEED
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- UNITS:
- EACH
$211.95 -
ANDREWS Pulley - 34 Tooth 290344
ANDREWS
$217.95The ANDREWS 34 Tooth Pulley delivers reliable, consistent power transfer for your drive system while maintaining tight tolerances essential for high-performance applications. Built from heat-treated, gear-quality steel, this pulley resists wear and...DS199478- SKU:
- DS199478
- Availability:
- Ships Same Business Day
- Weight:
- 6.40 LBS
- MATERIAL:
- STEEL
- TOOTH COUNT:
- 34
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- MODEL:
- SMOOTH CRUISING
- PRODUCT NAME:
- PULLEY
- TRANSMISSION TYPE:
- 5 SPEED
$217.95 -
On Sale
Belt Drives Ltd 96 Tooth 11mm x 1-1/2in Primary Drive Belt BDL-30884
BELT DRIVES LTD.
MSRP: $163.95Now: $147.56Was: $163.95The BDL-30884 Replacement Belt is designed specifically for BDL primary drives, ensuring optimal performance and durability. This high-quality belt offers a reliable solution for maintaining the efficiency of your drive system, providing smooth operation...DS360011- SKU:
- DS360011
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 1-1/2'
- STYLE:
- RIBBED
- TOOTH COUNT:
- 96
MSRP: $163.95Now: $147.56Was: $163.95 -
On Sale
Belt Drives Ltd Shoulder Bolts for 3in Belt Drive Electric Start Harley Davidson 1970-2006 ESB-100
BELT DRIVES LTD.
MSRP: $25.95Now: $23.36Was: $25.95If you're running a Belt Drives Ltd 3-inch belt drive clutch on your Harley, these shoulder bolts are critical to maintaining proper clutch engagement and longevity. Factory fasteners wear out, strip threads, and corrode—especially in wet conditions...DS360154- SKU:
- DS360154
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- DIAMETER:
- 9,5 MM (3/8')
- LENGTH IMPERIAL:
- 1-1/2'
- LENGTH:
- 38,1 MM (1-1/2')
- PRODUCT NAME:
- SHOULDER BOLT
- RIDING STYLE:
- STREET
- TYPE:
- CLUTCH
- UNITS:
- 6 PACK
MSRP: $25.95Now: $23.36Was: $25.95 -
On Sale
Belt Drives Ltd 30 Tooth Transmission Pulley TP-30
BELT DRIVES LTD.
MSRP: $202.95Now: $182.66Was: $202.95Reducing unsprung weight at the transmission improves acceleration response and reduces rotational inertia—critical gains for both street and track applications. The Belt Drives Ltd TP-30 delivers these benefits through precision 6061 T-6 aluminum...DS360165- SKU:
- DS360165
- Availability:
- Ships Same Business Day
- Weight:
- 2.69 LBS
- MATERIAL:
- 6061 T-6 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- PULLEY
- TOOTH COUNT:
- 30
MSRP: $202.95Now: $182.66Was: $202.95 -
On Sale
Belt Drives Ltd Clutch Basket 4-Speed 1970-1983 Shovelhead EV-460
BELT DRIVES LTD.
MSRP: $338.95Now: $305.06Was: $338.95A worn or damaged clutch basket compromises power transfer and reliability—especially critical in high-demand 4-speed Shovelhead applications. This Belt Drives Ltd basket restores precise engagement and smooth shifts with precision-machined construction...DS360412- SKU:
- DS360412
- Availability:
- Ships Same Business Day
- Weight:
- 10.65 LBS
- NUMBER OF TEETH:
- 68
- PRODUCT NAME:
- CLUTCH BASKET
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $338.95Now: $305.06Was: $338.95 -
On Sale
Belt Drives Ltd 8mm 144 Tooth Primary Belt for 1955-1984 Harley-Davidson FL Models BDL-37144-1
BELT DRIVES LTD.
MSRP: $93.95Now: $84.56Was: $93.95If you're running a classic Harley-Davidson FL with a BDL primary drive, belt degradation directly impacts power delivery and reliability. This OEM replacement belt restores the precision fit and durability your drive system demands, eliminating slippage...DS360012- SKU:
- DS360012
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- STYLE:
- RIBBED
- TOOTH COUNT:
- 144
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- WIDTH IMPERIAL:
- 1-1/2'
MSRP: $93.95Now: $84.56Was: $93.95 -
On Sale
Belt Drives Ltd Replacement Primary Belt 144 Tooth 2 Inch Wide for Harley-Davidson FL 1955-1964 BDL-37144-2
BELT DRIVES LTD.
MSRP: $118.95Now: $107.06Was: $118.95If your Harley FL primary drive is showing signs of belt wear or slippage, you're losing power delivery efficiency and risking catastrophic drive failure. The BDL-37144-2 replacement belt restores reliable torque transfer and eliminates the guesswork of...DS360013- SKU:
- DS360013
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 144
- WIDTH IMPERIAL:
- 2'
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE BELT
- TYPE:
- PRIMARY
- STYLE:
- RIBBED
MSRP: $118.95Now: $107.06Was: $118.95 -
On Sale
Belt Drives Ltd 78 Tooth 14mm Primary Drive Belt for Harley-Davidson FL 1946-1952 BDL-38078
BELT DRIVES LTD.
MSRP: $236.95Now: $213.26Was: $236.95Primary belt wear is inevitable on vintage Harley FL models, and a slipping or degraded belt directly compromises throttle response and overall drivetrain efficiency. The Belt Drives Ltd BDL-38078 replacement belt restores the precision power transfer...DS360015- SKU:
- DS360015
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- STYLE:
- RIBBED
- TOOTH COUNT:
- 78
- TYPE:
- PRIMARY
- PRODUCT NAME:
- DRIVE BELT
- WIDTH IMPERIAL:
- 1-1/2'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $236.95Now: $213.26Was: $236.95 -
On Sale
Belt Drives Ltd 11mm Belt Drive Kit for 1955-1964 Harley-Davidson FLH 47-31SK-2
BELT DRIVES LTD.
MSRP: $585.95Now: $527.36Was: $585.95If you're running a classic FLH and still relying on an outdated chain drive, you're sacrificing reliability and adding unnecessary maintenance to your riding schedule. This 11mm belt drive kit eliminates chain stretch, reduces vibration, and delivers...DS360108- SKU:
- DS360108
- Availability:
- Ships Same Business Day
- Weight:
- 8.90 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- COLOR/FINISH:
- ANODIZED
- UNITS:
- KIT
- WIDTH IMPERIAL:
- 1-1/2'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $585.95Now: $527.36Was: $585.95 -
On Sale
Belt Drives Ltd 8mm 2in Primary Belt Drive Kit for 1955-1984 Harley-Davidson Kick Start Models 76-47-2S
BELT DRIVES LTD.
MSRP: $651.95Now: $586.76Was: $651.95If you're running a kick-start Harley from the golden age of American motorcycling, you know that stock primary drives weren't engineered for reliability. Belt Drives Ltd's 8mm 2" primary belt drive kit eliminates the weak points of chain-driven...DS360115- SKU:
- DS360115
- Availability:
- Ships Same Business Day
- Weight:
- 11.25 LBS
- PRODUCT NAME:
- BELT DRIVE KIT
- THICKNESS IMPERIAL:
- 5/16'
- UNITS:
- KIT
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 144
- WIDTH IMPERIAL:
- 2'
MSRP: $651.95Now: $586.76Was: $651.95 -
On Sale
Belt Drives Ltd 3" Front Pulley 47 Tooth for 1984-1989 Harley-Davidson Softail 47EV-3
BELT DRIVES LTD.
MSRP: $289.33Now: $245.66Was: $289.33Your Softail's belt drive system demands precise pulley geometry to maintain proper tension, power delivery, and longevity. The Belt Drives Ltd 3" Front Pulley delivers the exact 47-tooth profile your 1984-1989 model requires, engineered with...DS360122- SKU:
- DS360122
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- COLOR/FINISH:
- ANODIZED
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PULLEY
- RIDING STYLE:
- STREET
- TOOTH COUNT:
- 47
- TYPE:
- MOTOR SHAFT
MSRP: $289.33Now: $245.66Was: $289.33Qty in Cart: 0Quantity:Price:MSRP: $289.33Now: $245.66Was: $289.33Subtotal: -
On Sale
Belt Drives Ltd Clutch Springs 6 Pack for 1970-1978 Harley-Davidson FLH Electra Glide ECS-100
BELT DRIVES LTD.
MSRP: $25.95Now: $23.36Was: $25.95If you're running a BDL Belt Drive clutch on your classic Harley, worn or weak clutch springs are the silent killer of smooth engagement and long-term reliability. The ECS-100 springs restore the consistent pressure needed for predictable clutch feel and...DS360156- SKU:
- DS360156
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- CLUTCH
- UNITS:
- 6 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SPRING
MSRP: $25.95Now: $23.36Was: $25.95
