Harley Engine
Harley Bike Engine Parts at JJ Motorsports
Rebuild and boost your Harley's engine with premium parts from JJ Motorsports. Our inventory features complete gasket sets, piston kits, oil filters, pushrod tubes, and coolers designed for maximum strength, leak-free sealing, and high-performance in extreme conditions. Compatible with Big Twins, Softail, Touring, and more, these components support top-end overhauls, oil management, and durability for street rides or custom builds.
Shop trusted brands like Drag Specialties for magnetic filters and Wiseco for forged pistons. Explore related categories such as Harley air and fuel for carb tuning or Harley drivetrain for transmission upgrades.
Top Harley Engine Products
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
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
-
FEULING OIL PUMP CORP. Race Oil Pump - Oil Cooled - M8 7020
FEULING OIL PUMP CORP.
$519.95A stock oil pump will cost you horsepower, reliability, and longevity—especially if you're pushing your M8 Twin Cam past factory limits. The Feuling 7020 Race Oil Pump eliminates blow-by and wet sumping while delivering the pressure volume and scavenge...09320196- SKU:
- 09320196
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- MATERIAL:
- 7075 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- RED
- TYPE:
- OIL PUMP
- PRODUCT NAME:
- PUMP
- UNITS:
- EACH
- BASE COLOR:
- RED
- MODEL:
- RACE SERIES®
$519.95 -
FEULING OIL PUMP CORP. Oil System - Race - M8 7097
FEULING OIL PUMP CORP.
$1,229.95A proper oil system is the foundation of reliable high-RPM performance, and the Feuling Race Series M8 7097 delivers the pressure stability, thermal control, and internal clearances your engine needs to handle aggressive valve timing and sustained power...09320199- SKU:
- 09320199
- Availability:
- Ships Same Business Day
- Weight:
- 6.05 LBS
- COLOR/FINISH:
- RED
- MODEL:
- RACE SERIES®
- PRODUCT NAME:
- OIL SYSTEM
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BASE COLOR:
- RED
$1,229.95 -
FEULING OIL PUMP CORP. Race Series Oil System Kit 7072ST
FEULING OIL PUMP CORP.
$1,059.95If you're running a T/C® engine and experiencing wet sumping, oil carryover into your air cleaner, or inconsistent oil pressure, the Feuling Oil Pump Corp. Race Series Oil System Kit 7072ST addresses these issues head-on. This complete oiling system kit...09320289- SKU:
- 09320289
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- MODEL:
- RACE SERIES®
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- OIL SYSTEM
- UNITS:
- KIT
$1,059.95 -
FEULING OIL PUMP CORP. Race Series Oil System Kit 7073ST
FEULING OIL PUMP CORP.
$1,059.95If you're running a T/C engine and experiencing wet sumping, oil temperature creep, or inconsistent oil pressure, a properly engineered oil system kit isn't optional—it's essential. The Feuling Race Series 7073ST delivers measurable improvements across...09320290- SKU:
- 09320290
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- PRODUCT NAME:
- OIL SYSTEM
- UNITS:
- KIT
- MODEL:
- RACE SERIES®
- RIDING STYLE:
- STREET
$1,059.95 -
FEULING OIL PUMP CORP. Race Oil Pump - Twin Cooled - M8 7021
FEULING OIL PUMP CORP.
$519.95Stock oil pumps can't keep up with high-performance demands—they struggle to maintain adequate pressure under sustained RPMs, fail to properly scavenge blow-by gases, and allow oil temperatures to climb when your engine needs cooling most. The Feuling...09320216- SKU:
- 09320216
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- PRODUCT NAME:
- PUMP
- UNITS:
- KIT
- BASE COLOR:
- RED
- MODEL:
- RACE SERIES®
- MATERIAL:
- 7075 BILLET ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- RED
- TYPE:
- OIL PUMP
$519.95 -
FEULING OIL PUMP CORP. Oil System - HP+‚® - M8 Twin Cooled 7098
FEULING OIL PUMP CORP.
$1,029.95A properly engineered oil system is the foundation of engine longevity and performance. The Feuling HP+ Oil System eliminates common cooling and scavenging issues that plague stock M8 Twin Cooled setups, delivering measurable improvements in engine...09320217- SKU:
- 09320217
- Availability:
- Ships Same Business Day
- Weight:
- 6.00 LBS
- BASE COLOR:
- RED
- MODEL:
- HP+®
- TYPE:
- OIL SYSTEM
- STYLE:
- GEAR DRIVE
- UNITS:
- KIT
- COLOR/FINISH:
- RED
- PRODUCT NAME:
- PUMP KIT
- STYLE:
- CHAIN DRIVE
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$1,029.95 -
FEULING OIL PUMP CORP. Race Oil System - M8 Twin Cooled 7099
FEULING OIL PUMP CORP.
$1,229.95An efficient oiling system is the foundation of engine reliability and performance—inadequate oil pressure, volume, and cooling directly compromise bearing longevity and power output. The Feuling Oil Pump Corp. Race Oil System for M8 Twin Cooled engines...09320218- SKU:
- 09320218
- Availability:
- Ships Same Business Day
- Weight:
- 6.20 LBS
- MODEL:
- RACE SERIES®
- STYLE:
- GEAR DRIVE
- UNITS:
- KIT
- BASE COLOR:
- RED
- TYPE:
- OIL SYSTEM
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PUMP KIT
- RIDING STYLE:
- STREET
- STYLE:
- CHAIN DRIVE
- COLOR/FINISH:
- RED
$1,229.95 -
FEULING OIL PUMP CORP. 472 Cam - Chain Drive - M8 1350
FEULING OIL PUMP CORP.
$319.95The Feuling Oil Pump Corp. 472 Cam delivers optimized valve timing and lift specifically engineered for M8 chain-drive Harley-Davidson engines, giving you increased horsepower and torque throughout the RPM range. This CNC-machined cam profile is a direct...09251325- SKU:
- 09251325
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- PRODUCT NAME:
- CAMSHAFT
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- STREET
- TYPE:
- CHAIN
- APPLICATION:
- INTAKE
- GRIND:
- 472 SERIES
- MODEL:
- REAPER
- UNITS:
- EACH
$319.95 -
FEULING OIL PUMP CORP. Cam Kit - HP+‚® - M8 1450
FEULING OIL PUMP CORP.
$529.95The M8's inherent valvetrain instability demands a cam kit engineered specifically for this engine architecture—and the Feuling HP+ delivers the precision engineering needed to unlock reliable horsepower gains while eliminating the hydraulic lifter...09251326- SKU:
- 09251326
- Availability:
- Ships Same Business Day
- Weight:
- 4.26 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- GRIND:
- 472 SERIES
- TYPE:
- CHAIN
- PRODUCT NAME:
- CAMCHEST KIT
- APPLICATION:
- INTAKE
- MODEL:
- HP+®
$529.95Qty in Cart: 0Quantity:Price:$529.95Subtotal: -
FEULING OIL PUMP CORP. Cam Kit - HP+‚® - M8 7252
FEULING OIL PUMP CORP.
$1,795.95Stock M-Eight oiling systems compromise pressure stability, scavenge efficiency, and bearing protection—especially under sustained high-RPM operation. The Feuling HP+ Cam Kit addresses these limitations with a complete high-flow oiling solution that...09251328- SKU:
- 09251328
- Availability:
- Ships Same Business Day
- Weight:
- 11.46 LBS
- APPLICATION:
- EXHAUST
- RIDING STYLE:
- STREET
- FEATURES:
- OIL COOLED
- GRIND:
- 472 SERIES
- TYPE:
- CHAIN
- APPLICATION:
- INTAKE
- MODEL:
- HP+®
- PRODUCT NAME:
- CAMCHEST KIT
- UNITS:
- KIT
$1,795.95 -
FEULING OIL PUMP CORP. Cam Kit - HP+‚® - M8 7257
FEULING OIL PUMP CORP.
$1,795.95Stock M8 oil systems compromise on pressure, cooling, and scavenge efficiency—leaving your engine vulnerable to bearing wear, thermal stress, and sump starvation under load. The Feuling HP+ Cam Kit addresses this with a complete system upgrade that...09251329- SKU:
- 09251329
- Availability:
- Ships Same Business Day
- Weight:
- 11.41 LBS
- APPLICATION:
- EXHAUST
- FEATURES:
- TWIN COOLED
- GRIND:
- 472 SERIES
- TYPE:
- CHAIN
- APPLICATION:
- INTAKE
- MODEL:
- HP+®
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CAMCHEST KIT
- UNITS:
- KIT
$1,795.95 -
FEULING OIL PUMP CORP. Gear Drive Reaper Cam - 543 Series 1021
FEULING OIL PUMP CORP.
$399.95If you're looking for measurable power gains without sacrificing the smooth, streetable characteristics of your Harley, the Feuling 543 Series Reaper delivers. This cam outperforms the 525 in peak output while preserving low-end torque and maintaining a...09250674- SKU:
- 09250674
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 12°
- EXHAUST LIFT IMPERIAL:
- 0.553'
- INTAKE DURATION IMPERIAL:
- 238°
- INTAKE OPEN IMPERIAL:
- 15°
- EXHAUST DURATION IMPERIAL:
- 248°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.140'
- MODEL:
- REAPER
- APPLICATION:
- INTAKE
- EXHAUST OPEN IMPERIAL:
- 56°
- GRIND:
- 543 SERIES
- INTAKE CLOSE IMPERIAL:
- 43°
- TYPE:
- GEAR
- INTAKE LIFT IMPERIAL:
- 0.543'
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
$399.95 -
FEULING OIL PUMP CORP. Cam - 594 Series - Chain Drive 1301
FEULING OIL PUMP CORP.
$399.95The Feuling 594 Series cam delivers measurable torque and horsepower gains across a wide range of displacement engines, from 95" high-revving builds to massive 124" displacement mills. Whether you're chasing mid-range grunt on a heavy cruiser or peak...09250675- SKU:
- 09250675
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- APPLICATION:
- EXHAUST
- INTAKE LIFT IMPERIAL:
- 0.594'
- MODEL:
- REAPER
- TYPE:
- CHAIN
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 16°
- EXHAUST OPEN IMPERIAL:
- 64°
- INTAKE CLOSE IMPERIAL:
- 56°
- INTAKE OPEN IMPERIAL:
- 19°
- RIDING STYLE:
- STREET
- EXHAUST DURATION IMPERIAL:
- 260°
- GRIND:
- 594 SERIES
- INTAKE DURATION IMPERIAL:
- 255°
- EXHAUST LIFT IMPERIAL:
- 0.604'
- PRODUCT NAME:
- CAMSHAFT
- UNITS:
- PAIR
$399.95Qty in Cart: 0Quantity:Price:$399.95Subtotal: -
FEULING OIL PUMP CORP. Cam - 594 Series - Gear Drive 1302
FEULING OIL PUMP CORP.
$399.95The Feuling 594 Series Cam delivers the aggressive powerband your big-inch Harley demands, whether you're running a 103" cruiser or a 124" beast. This gear-drive cam unlocks significant torque gains across the RPM range while maximizing horsepower...09250676- SKU:
- 09250676
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- APPLICATION:
- EXHAUST
- MODEL:
- REAPER
- EXHAUST DURATION IMPERIAL:
- 260°
- GRIND:
- 594 SERIES
- INTAKE DURATION IMPERIAL:
- 255°
- INTAKE LIFT IMPERIAL:
- 0.594'
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 16°
- EXHAUST OPEN IMPERIAL:
- 64°
- INTAKE CLOSE IMPERIAL:
- 56°
- INTAKE OPEN IMPERIAL:
- 19°
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- EXHAUST LIFT IMPERIAL:
- 0.604'
- PRODUCT NAME:
- CAMSHAFT
- UNITS:
- PAIR
$399.95 -
FEULING OIL PUMP CORP. Cam - 594 Series - Chain Drive 1303
FEULING OIL PUMP CORP.
$399.95The Feuling 594 Series camshaft unlocks serious performance gains across a wide range of big-inch Harley-Davidson engines, delivering a broad torque band that translates to real-world power when you need it. Whether you're running a 103", 110", or 124"...09250677- SKU:
- 09250677
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- GRIND:
- 594 SERIES
- MODEL:
- REAPER
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 16°
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 260°
- INTAKE DURATION IMPERIAL:
- 255°
- INTAKE LIFT IMPERIAL:
- 0.594'
- TYPE:
- CHAIN
- EXHAUST LIFT IMPERIAL:
- 0.604'
- EXHAUST OPEN IMPERIAL:
- 64°
- INTAKE CLOSE IMPERIAL:
- 56°
- INTAKE OPEN IMPERIAL:
- 19°
- PRODUCT NAME:
- CAMSHAFT
- UNITS:
- PAIR
$399.95 -
FEULING OIL PUMP CORP. Complete Cam Kit - 543C 7230
FEULING OIL PUMP CORP.
$1,649.95If you're running a high-performance engine that demands reliable oiling, consistent oil pressure, and cooler operating temperatures, the Feuling Oil Pump Corp. Complete Cam Kit delivers everything you need in one comprehensive package. This kit...09250681- SKU:
- 09250681
- Availability:
- Ships Same Business Day
- Weight:
- 11.20 LBS
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 248°
- INTAKE OPEN IMPERIAL:
- 15°
- MODEL:
- HP+®
- TYPE:
- CHAIN
- EXHAUST LIFT IMPERIAL:
- 0.574'
- INTAKE DURATION IMPERIAL:
- 238°
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 12°
- EXHAUST OPEN IMPERIAL:
- 56°
- GRIND:
- 543 SERIES
- INTAKE CLOSE IMPERIAL:
- 43°
- PRODUCT NAME:
- CAM PLATE KIT
- INTAKE LIFT IMPERIAL:
- 0.543'
- RIDING STYLE:
- STREET
$1,649.95 -
FEULING OIL PUMP CORP. Complete Cam Kit - 543G 7232
FEULING OIL PUMP CORP.
$1,649.95If you're running a high-performance engine that demands reliable oiling under extreme conditions, the Feuling 543G Complete Cam Kit delivers the thermal control and pressure consistency your build needs. This all-in-one solution eliminates the guesswork...09250683- SKU:
- 09250683
- Availability:
- Ships Same Business Day
- Weight:
- 11.20 LBS
- INTAKE LIFT IMPERIAL:
- 0.543'
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 12°
- EXHAUST OPEN IMPERIAL:
- 56°
- GRIND:
- 543 SERIES
- PRODUCT NAME:
- CAM PLATE KIT
- EXHAUST LIFT IMPERIAL:
- 0.574'
- INTAKE DURATION IMPERIAL:
- 238°
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 248°
- INTAKE CLOSE IMPERIAL:
- 43°
- INTAKE OPEN IMPERIAL:
- 15°
- MODEL:
- HP+®
- TYPE:
- GEAR
$1,649.95Qty in Cart: 0Quantity:Price:$1,649.95Subtotal: -
FEULING OIL PUMP CORP. Complete Cam Kit - 525G 7205
FEULING OIL PUMP CORP.
$1,649.95If you're running a Harley with inconsistent oil temps, weak oil pressure, or that telltale wet-sump mess, the Feuling 525G Complete Cam Kit addresses all of these problems in one comprehensive package. This isn't a bolt-on bandage—it's a complete...09250690- SKU:
- 09250690
- Availability:
- Ships Same Business Day
- Weight:
- 10.90 LBS
- EXHAUST OPEN IMPERIAL:
- 51°
- INTAKE CLOSE IMPERIAL:
- 42°
- APPLICATION:
- EXHAUST
- GRIND:
- 525 SERIES
- INTAKE OPEN IMPERIAL:
- 4°
- PRODUCT NAME:
- CAM PLATE KIT
- EXHAUST DURATION IMPERIAL:
- 236°
- EXHAUST LIFT IMPERIAL:
- 0.535'
- INTAKE LIFT IMPERIAL:
- 0.525'
- RIDING STYLE:
- STREET
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 5°
- INTAKE DURATION IMPERIAL:
- 226°
- MODEL:
- HP+®
- TYPE:
- GEAR
- UNITS:
- KIT
$1,649.95 -
FEULING OIL PUMP CORP. Complete Cam Kit - 574G - Twin Cam 7208
FEULING OIL PUMP CORP.
$1,649.95If you're running a Twin Cam engine, camshaft performance directly impacts oil cooling, pressure stability, and overall reliability—especially under sustained high-RPM operation. This complete Feuling kit eliminates the guesswork by pairing high-volume...09250691- SKU:
- 09250691
- Availability:
- Ships Same Business Day
- Weight:
- 10.60 LBS
- EXHAUST CLOSE IMPERIAL:
- 14°
- EXHAUST OPEN IMPERIAL:
- 61°
- INTAKE DURATION IMPERIAL:
- 240°
- RIDING STYLE:
- STREET
- EXHAUST LIFT IMPERIAL:
- 0.574'
- GRIND:
- 574 SERIES
- INTAKE LIFT IMPERIAL:
- 0.574'
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- INTAKE CLOSE IMPERIAL:
- 45°
- PRODUCT NAME:
- CAM PLATE KIT
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 255°
- INTAKE OPEN IMPERIAL:
- 15°
- MODEL:
- HP+®
- TYPE:
- GEAR
$1,649.95 -
FEULING OIL PUMP CORP. Complete Cam Kit - 543G - Twin Cam 7233
FEULING OIL PUMP CORP.
$1,649.95If you're running a Twin Cam engine and want measurable gains in reliability, oil pressure, and thermal management, a complete cam kit is the most efficient path to a properly synchronized top end. The FEULING 543G eliminates the guesswork of piecing...09250692- SKU:
- 09250692
- Availability:
- Ships Same Business Day
- Weight:
- 12.10 LBS
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 248°
- INTAKE CLOSE IMPERIAL:
- 43°
- MODEL:
- HP+®
- TYPE:
- GEAR
- UNITS:
- KIT
- EXHAUST LIFT IMPERIAL:
- 0.574'
- INTAKE DURATION IMPERIAL:
- 238°
- INTAKE LIFT IMPERIAL:
- 0.543'
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 12°
- INTAKE OPEN IMPERIAL:
- 15°
- PRODUCT NAME:
- CAM PLATE KIT
- EXHAUST OPEN IMPERIAL:
- 56°
- GRIND:
- 543 SERIES
$1,649.95
