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
-
JOKER MACHINE Inspection Cover - Smooth 921016C
JOKER MACHINE
$109.95A quality inspection cover does more than protect your engine bay—it's the first visual indicator of a well-maintained, precision-built machine. The JOKER MACHINE Inspection Cover elevates your motorcycle's aesthetics while delivering the durability and...DS375068- SKU:
- DS375068
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
$109.95Qty in Cart: 0Quantity:Price:$109.95Subtotal: -
PBI Offset Transmission Sprocket - 23 Tooth - Harley-Davidson/Buell 288-23
PBI
$153.00Transmission sprocket selection directly impacts your bike's acceleration, top-end performance, and drivetrain longevity. This PBI offset sprocket delivers precise tooth engagement and reduced wear through premium materials and CNC precision, ensuring...PBI28823- SKU:
- PBI28823
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
$153.00 -
PBI Offset Transmission Sprocket - 24 Tooth - Harley-Davidson/Buell 288-24
PBI
$161.15A properly matched transmission sprocket is critical for maximizing power delivery and maintaining optimal gear ratios in your Harley or Buell engine. This CNC-machined, case-hardened sprocket delivers consistent engagement and durability through...PBI28824- SKU:
- PBI28824
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
$161.15 -
PBI Transmission Mainshaft Sprocket - 24-Tooth - XL 277-24
PBI
$90.95A quality transmission mainshaft sprocket is critical to reliable power delivery and chain longevity in high-performance applications. This PBI 24-tooth sprocket is precision-engineered to handle sustained load and acceleration demands without compromise...DS191093- SKU:
- DS191093
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$90.95 -
REKLUSE Clutch Basket - M8 RMS-4115005
REKLUSE
$529.00A worn or damaged clutch basket forces your entire clutch system to work harder, leading to slippage, excessive heat, and premature failure. The Rekluse M8 RMS-4115005 clutch basket is precision CNC-machined from billet aluminum and hard anodized to...11321478- SKU:
- 11321478
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
$529.00 -
On Sale
Belt Drives Ltd Primary Belt for Harley-Davidson Softail 1990-1993 BDL-138-175
BELT DRIVES LTD.
MSRP: $188.31Now: $139.46Was: $188.31The Primo Primary Belt for your 1990-1993 Harley-Davidson Softail handles the critical job of transferring engine power to your transmission with precision and reliability. A worn or inadequate primary belt compromises throttle response and can lead to...12040244- SKU:
- 12040244
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
MSRP: $188.31Now: $139.46Was: $188.31 -
TRASK Assault Derby Cover - Matte Black - Softail TM-0042MBK
TRASK
$279.95A quality derby cover protects your primary cover from dirt, debris, and weather while completing your bike's visual package. The TRASK Assault Derby Cover delivers both function and form with precision-machined construction that matches TRASK's complete...11070754- SKU:
- 11070754
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
$279.95 -
TRASK Assault Derby Cover - Reverse Cut - Softail TM-0042RC
TRASK
$279.95A clean, custom look starts with quality details, and the TRASK Assault Derby Cover delivers both style and function. The reverse-cut design pairs seamlessly with TRASK's Assault air cleaner and cam cover lineup, giving your Softail a cohesive,...11070755- SKU:
- 11070755
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
$279.95 -
NAMZ Neutral Switch Eliminator Plug - Big Twin NNSE-B01
NAMZ
$55.95If you're running a custom Big Twin build without a factory neutral switch, you need a solution that prevents electrical gremlins and false warning lights. The NAMZ Neutral Switch Eliminator Plug eliminates the headache of an open circuit while...11050275- SKU:
- 11050275
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
$55.95 -
Rekluse RadiusCX Clutch Kit for 2010 Harley-Davidson Road Glide Custom FLTRX RMS-7915001
REKLUSE
$1,599.00The Rekluse RadiusCX Clutch Kit eliminates the inconsistency and fatigue of traditional clutch management, giving you smooth power delivery and precise control whether you're navigating city streets or attacking canyon roads. Built with Rekluse EXP...11300883- SKU:
- 11300883
- Availability:
- Ships Same Business Day
- Weight:
- 7.28 LBS
$1,599.00 -
Rekluse RadiusCX Clutch Kit Hydraulic Clutch 2007-2010 Harley-Davidson Twin Cam RMS-7915002
REKLUSE
$1,599.00The Rekluse RadiusCX clutch kit eliminates the guesswork from Twin Cam clutch setup, delivering automatic engagement that responds to load and RPM without rider input. Whether you're pushing hard on the track or cruising the street, this kit gives you...11300884- SKU:
- 11300884
- Availability:
- Ships Same Business Day
- Weight:
- 7.60 LBS
$1,599.00 -
Rekluse RadiusCX Clutch Kit Hydraulic Clutch 2016-2017 Harley-Davidson Low Rider S FXDLS RMS-7915003
REKLUSE
$1,599.00The Rekluse RadiusCX transforms clutch control on your Low Rider S by eliminating the need for constant lever modulation—the EXP auto-clutch technology automatically adjusts engagement based on engine load, giving you smoother acceleration and better...11300885- SKU:
- 11300885
- Availability:
- Ships Same Business Day
- Weight:
- 7.60 LBS
$1,599.00 -
Rekluse RadiusCX Clutch Kit for 2010 Harley-Davidson Road Glide Custom FLTRX RMS-7915004
REKLUSE
$1,599.00The Rekluse RadiusCX eliminates stalling, missed shifts, and clutch fade—critical performance factors whether you're navigating tight canyon roads or demanding track conditions. Its EXP auto-clutch technology delivers seamless power engagement without...11300886- SKU:
- 11300886
- Availability:
- Ships Same Business Day
- Weight:
- 7.40 LBS
$1,599.00 -
Rekluse RadiusCX Clutch Kit Hydraulic Clutch 2017-2020 Harley-Davidson Touring FLHXS FLTRXS FLHTK FLHRXS FLHX FLHR FLTRX FLTRU FLHTCUI FLSTFBS FLSS FXSE FLRT FLHXSE FLHTKL FLHTCUL FLTRUSE FLHTKSE FLHTCUTG FLSTNSE FLHRSE FLTRXSE2 FLHTCUSE8 RMS-7915005
REKLUSE
$1,599.00If you're running a Twin Cam Harley and want seamless power delivery without constant clutch modulation, the Rekluse RadiusCX delivers automatic engagement that keeps you focused on performance rather than lever work. The EXP auto-clutch technology...11300887- SKU:
- 11300887
- Availability:
- Ships Same Business Day
- Weight:
- 7.57 LBS
$1,599.00 -
Rekluse RadiusCX Clutch Kit Cable Clutch 2024 Harley-Davidson CVO Road Glide ST FLTRXSTSE RMS-7915008
REKLUSE
$1,599.00Manual clutch fatigue is a real limiting factor on long rides and in demanding track conditions—the Rekluse RadiusCX eliminates that entirely with automatic engagement and disengagement, letting you focus purely on throttle control and your line. Built...11300888- SKU:
- 11300888
- Availability:
- Ships Same Business Day
- Weight:
- 7.60 LBS
$1,599.00 -
Rekluse RadiusCX Clutch & Basket Kit 2007-2010 Harley-Davidson Twin Cam Cable RMS-6415001
REKLUSE
$1,899.00If you're running a Twin Cam Harley and tired of fighting with stock clutch engagement or worrying about stalling in traffic, the Rekluse RadiusCX delivers the reliability and control serious riders demand. This kit replaces your diaphragm spring with a...11321982- SKU:
- 11321982
- Availability:
- Ships Same Business Day
- Weight:
- 9.02 LBS
$1,899.00 -
Rekluse RadiusCX Clutch & Basket Kit for 2010 Harley-Davidson CVO Fat Bob FXDFSE2 RMS-6415002
REKLUSE
$1,899.00If you're running a 2010 Harley-Davidson CVO Fat Bob FXDFSE2, you know that stock clutch performance can limit what you're capable of—whether you're launching hard, navigating tight low-speed situations, or managing aggressive throttle inputs. The...11321983- SKU:
- 11321983
- Availability:
- Ships Same Business Day
- Weight:
- 9.26 LBS
$1,899.00 -
Rekluse RadiusCX Clutch & Basket Kit for 2011-2017 Harley-Davidson Twin Cam Hydraulic Clutch RMS-6415003
REKLUSE
$1,899.00The Rekluse RadiusCX transforms your Twin Cam's clutch system from a constant management task into a confidence-inspiring component that handles itself. Whether you're navigating tight corners, stop-and-go traffic, or aggressive acceleration, this kit...11321984- SKU:
- 11321984
- Availability:
- Ships Same Business Day
- Weight:
- 22.05 LBS
$1,899.00 -
Rekluse RadiusCX Clutch & Basket Kit for 2011-2017 Harley-Davidson Twin Cam Cable Clutch RMS-6415004
REKLUSE
$1,899.00If you're running a cable clutch on your 2011-2017 Twin Cam and tired of wrestling with stall-prone takeoffs or constant adjustment headaches, the Rekluse RadiusCX is the purpose-built solution. This kit replaces mushy diaphragm spring engagement with...11321985- SKU:
- 11321985
- Availability:
- Ships Same Business Day
- Weight:
- 8.98 LBS
$1,899.00 -
Rekluse RadiusCX Clutch & Basket Kit for Harley-Davidson M8 2017-2025 RMS-6415005
REKLUSE
$1,899.00The Rekluse RadiusCX transforms your M8's clutch engagement from unpredictable to precise, replacing the stock diaphragm spring with a six-coil system that delivers consistent control through stop-and-go riding. Whether you're navigating tight urban...11321986- SKU:
- 11321986
- Availability:
- Ships Same Business Day
- Weight:
- 9.20 LBS
$1,899.00
