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
MAGNUM Clutch Line 41774
MAGNUM
MSRP: $126.95Now: $118.06Was: $126.95A hydraulic clutch line is only as good as its ability to transmit consistent pressure without flex or degradation—and the MAGNUM Clutch Line 41774 delivers exactly that. Built with PTFE inner tubing...11321077- SKU:
- 11321077
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- TYPE:
- HYDRAULIC
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM STRAIGHT BANJO FITTING
- PRODUCT NAME:
- CLUTCH LINE
- MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 74'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $126.95Now: $118.06Was: $126.95Qty in Cart: 0Quantity:Price:MSRP: $126.95Now: $118.06Was: $126.95Subtotal: -
On Sale
MAGNUM Clutch Line 41776
MAGNUM
MSRP: $131.95Now: $122.71Was: $131.95If you're running a hydraulic clutch system, your line quality directly impacts lever feel, response time, and long-term reliability. The MAGNUM Clutch Line 41776 delivers consistent pressure...11321078- SKU:
- 11321078
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- TYPE:
- HYDRAULIC
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 76'
- PRODUCT NAME:
- CLUTCH LINE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- CONNECTOR TYPE:
- 10 MM STRAIGHT BANJO FITTING
- MATERIAL:
- STAINLESS STEEL
MSRP: $131.95Now: $122.71Was: $131.95 -
On Sale
MAGNUM Clutch Line 41778
MAGNUM
MSRP: $131.95Now: $122.71Was: $131.95Stock clutch lines deteriorate and flex under pressure, compromising feel and reliability during aggressive riding. The MAGNUM Clutch Line 41778 eliminates that weakness with military-grade materials...11321079- SKU:
- 11321079
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM STRAIGHT BANJO FITTING
- MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- BLACK
- LENGTH IMPERIAL:
- 78'
- PRODUCT NAME:
- CLUTCH LINE
- RIDING STYLE:
- STREET
- TYPE:
- HYDRAULIC
- UNITS:
- EACH
MSRP: $131.95Now: $122.71Was: $131.95 -
On Sale
MAGNUM Clutch Line 41780
MAGNUM
MSRP: $131.95Now: $122.71Was: $131.95A hydraulic clutch line that doesn't perform under pressure is a liability on the track or street. The MAGNUM Clutch Line 41780 combines PTFE inner tubing with aramid fiber reinforcement and premium...11321080- SKU:
- 11321080
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM STRAIGHT BANJO FITTING
- PRODUCT NAME:
- CLUTCH LINE
- COLOR/FINISH:
- BLACK
- TYPE:
- HYDRAULIC
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 80'
- MATERIAL:
- STAINLESS STEEL
MSRP: $131.95Now: $122.71Was: $131.95 -
On Sale
MAGNUM Clutch Line 41784
MAGNUM
MSRP: $137.95Now: $128.29Was: $137.95If you're running a hydraulic clutch system, your line is your direct connection to smooth, responsive engagement—and OEM lines wear out, crack, or fail under hard riding. The MAGNUM Clutch Line...11321082- SKU:
- 11321082
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 84'
- PRODUCT NAME:
- CLUTCH LINE
- TYPE:
- HYDRAULIC
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM STRAIGHT BANJO FITTING
MSRP: $137.95Now: $128.29Was: $137.95Qty in Cart: 0Quantity:Price:MSRP: $137.95Now: $128.29Was: $137.95Subtotal: -
On Sale
MAGNUM Clutch Line 41868
MAGNUM
MSRP: $121.95Now: $113.41Was: $121.95Stock clutch lines are prone to swelling, degradation, and inconsistent hydraulic response—issues that compound under racing conditions or aggressive riding. The MAGNUM Clutch Line 41868 eliminates...11321091- SKU:
- 11321091
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- CLUTCH LINE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM 35° BANJO FITTING
- LENGTH IMPERIAL:
- 68'
- TYPE:
- HYDRAULIC
MSRP: $121.95Now: $113.41Was: $121.95 -
On Sale
MAGNUM Clutch Line 41872
MAGNUM
MSRP: $126.95Now: $118.06Was: $126.95A hydraulic clutch line is only as good as its ability to transmit consistent pressure without flex or degradation—and factory lines often fail under hard riding conditions. The MAGNUM Clutch Line...11321093- SKU:
- 11321093
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- LENGTH IMPERIAL:
- 72'
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- CLUTCH LINE
- RIDING STYLE:
- STREET
- TYPE:
- HYDRAULIC
- CONNECTOR TYPE:
- 10 MM 35° BANJO FITTING
- MATERIAL:
- STAINLESS STEEL
MSRP: $126.95Now: $118.06Was: $126.95Qty in Cart: 0Quantity:Price:MSRP: $126.95Now: $118.06Was: $126.95Subtotal: -
On Sale
MAGNUM Clutch Line 41978
MAGNUM
MSRP: $132.95Now: $123.64Was: $132.95Stock clutch lines wear out, crack, and fail—especially on high-performance applications where hydraulic pressure demands precision. The MAGNUM Clutch Line 41978 replaces mushy, inconsistent...11321113- SKU:
- 11321113
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- CONNECTOR TYPE:
- 10 MM 90° BANJO FITTING
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- CLUTCH LINE
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 78'
- TYPE:
- HYDRAULIC
- BRAND SPECIFIC COLOR:
- BLACK PEARL
MSRP: $132.95Now: $123.64Was: $132.95 -
On Sale
MAGNUM Clutch Line 41980
MAGNUM
MSRP: $132.95Now: $123.64Was: $132.95Stock clutch lines deteriorate under heat and pressure, leading to spongy engagement and potential hydraulic failure. The MAGNUM Clutch Line 41980 combines aerospace-grade materials with precision...11321114- SKU:
- 11321114
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BRAND SPECIFIC COLOR:
- BLACK PEARL
- CONNECTOR TYPE:
- 10 MM 90° BANJO FITTING
- PRODUCT NAME:
- CLUTCH LINE
- LENGTH IMPERIAL:
- 80'
- TYPE:
- HYDRAULIC
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
MSRP: $132.95Now: $123.64Was: $132.95 -
On Sale
MAGNUM Hydraulic Clutch Line - 76" 31276CVO
MAGNUM
MSRP: $135.95Now: $126.43Was: $135.95When you're pushing your machine to the limit, stock clutch lines become a liability—they expand under pressure and rob you of the precise engagement you need. The MAGNUM Hydraulic Clutch Line gives...11321480- SKU:
- 11321480
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- PTFE
- UNITS:
- EACH
- CONNECTOR TYPE:
- 10 MM 35° BANJO FITTING
- MATERIAL:
- DUPONT™ KEVLAR®
- BRAND SPECIFIC COLOR:
- STERLING CHROMITE II
- LENGTH IMPERIAL:
- 76'
- PRODUCT NAME:
- CLUTCH LINE
- TYPE:
- HYDRAULIC
MSRP: $135.95Now: $126.43Was: $135.95 -
On Sale
ANDREWS 1st Gear Set 299110
ANDREWS
MSRP: $259.95Now: $233.96Was: $259.95A properly engineered first gear set is fundamental to consistent launch performance and reliable power transfer in high-RPM applications. The ANDREWS 1st Gear Set 299110 delivers the precision...11060064- SKU:
- 11060064
- Availability:
- Ships Same Business Day
- Weight:
- 2.03 LBS
- FIRST GEAR RATIO:
- 2.61:1
- MATERIAL:
- HIGH-NICKEL ALLOY STEEL
- PRODUCT NAME:
- GEAR SET
- RIDING STYLE:
- STREET
- STYLE:
- CLOSE RATIO
- TYPE:
- FIRST GEAR
- UNITS:
- SET
MSRP: $259.95Now: $233.96Was: $259.95 -
On Sale
ANDREWS Transmission Gear - 5th Gear 299155
ANDREWS
MSRP: $92.95Now: $83.66Was: $92.95A worn or damaged 5th gear compromises your transmission's reliability and performance across the entire powerband. The ANDREWS Transmission Gear 5th Gear 299155 is engineered to OEM specifications,...11060066- SKU:
- 11060066
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- STREET
- TYPE:
- FIFTH GEAR
- PRODUCT NAME:
- GEAR
- UNITS:
- EACH
- TRANSMISSION TYPE:
- 5 SPEED
MSRP: $92.95Now: $83.66Was: $92.95Qty in Cart: 0Quantity:Price:MSRP: $92.95Now: $83.66Was: $92.95Subtotal: -
On Sale
ANDREWS 5-Speed Mainshaft 299180
ANDREWS
MSRP: $267.95Now: $241.16Was: $267.95If you're building or rebuilding a transmission that demands reliability and precise gear engagement, the Andrews 5-Speed Mainshaft is engineered to deliver consistent performance lap after lap. This...11060068- SKU:
- 11060068
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- RIDING STYLE:
- STREET
- STYLE:
- 5 SPEED
- UNITS:
- EACH
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- MAINSHAFT
MSRP: $267.95Now: $241.16Was: $267.95 -
On Sale
ANDREWS Pulley - 29 Tooth 290294
ANDREWS
MSRP: $211.95Now: $190.76Was: $211.95The ANDREWS 29-tooth pulley delivers precise primary drive ratios for custom and performance-built engines requiring fine-tuned engagement characteristics. Machined from heat-treated, gear-quality...DS199479- SKU:
- DS199479
- Availability:
- Ships Same Business Day
- Weight:
- 4.88 LBS
- MATERIAL:
- STEEL
- TRANSMISSION TYPE:
- 5 SPEED
- TYPE:
- TRANSMISSION
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PULLEY
- MODEL:
- BETTER ACCELERATION
- TOOTH COUNT:
- 29
- UNITS:
- EACH
MSRP: $211.95Now: $190.76Was: $211.95 -
On Sale
ANDREWS 1st Gear Set 296110
ANDREWS
MSRP: $219.95Now: $197.96Was: $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...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
MSRP: $219.95Now: $197.96Was: $219.95 -
On Sale
ANDREWS Transmission Gear - 1st Gear 296120
ANDREWS
MSRP: $123.97Now: $111.57Was: $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...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
MSRP: $123.97Now: $111.57Was: $123.97Qty in Cart: 0Quantity:Price:MSRP: $123.97Now: $111.57Was: $123.97Subtotal: -
On Sale
ANDREWS Mainshaft - 1st Gear 296125
ANDREWS
MSRP: $116.95Now: $105.26Was: $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...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
MSRP: $116.95Now: $105.26Was: $116.95Qty in Cart: 0Quantity:Price:MSRP: $116.95Now: $105.26Was: $116.95Subtotal: -
On Sale
ANDREWS 5-Speed Mainshaft 296800
ANDREWS
MSRP: $331.95Now: $298.76Was: $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...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
MSRP: $331.95Now: $298.76Was: $331.95 -
On Sale
ANDREWS Mainshaft - 3rd Gear 299103
ANDREWS
MSRP: $129.95Now: $116.96Was: $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...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
MSRP: $129.95Now: $116.96Was: $129.95 -
On Sale
ANDREWS 4th Gear Mainshaft 204280
ANDREWS
MSRP: $210.95Now: $189.86Was: $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...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
MSRP: $210.95Now: $189.86Was: $210.95
