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
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DRAG SPECIALTIES Vent Line - FLT 07110032
DRAG SPECIALTIES
$77.24DRAG SPECIALTIES Vent Line FLT 07110032Highly chromed steel construction, Replaces the rubber OEM crankcase-to-oil tank line, Includes fittings for easy installation, Made in the U.S.A.07110032- SKU:
- 07110032
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- TYPE:
- CRANKCASE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- FEATURES:
- INCLUDES FITTING
- MATERIAL:
- STEEL
- PRODUCT NAME:
- VENT TUBE
$77.24Qty in Cart: 0Quantity:Price:$77.24Subtotal: -
DRAG SPECIALTIES Flange Adapter 289219
DRAG SPECIALTIES
$43.76DRAG SPECIALTIES Flange Adapter 289219Allows you to mount OEM late-model CV or Mikuni HSR-42 carbs on early Evolutions with two-bolt flange manifolds, CNC machined from 6061 billet aluminum, Mounting holes are 2.75" on center, Can be polished, plated or...DS289219- SKU:
- DS289219
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- FLANGE ADAPTER
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
$43.76 -
DRAG SPECIALTIES Cam Cover - Twin Cam 25247-99
DRAG SPECIALTIES
$125.61DRAG SPECIALTIES Cam Cover Twin Cam 25247-99Accept OEM gasket and mounting hardware09400438- SKU:
- 09400438
- Availability:
- Ships Same Business Day
- Weight:
- 2.14 LBS
- MATERIAL:
- DIE-CAST
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- CAM
$125.61 -
DRAG SPECIALTIES Tensioner - Primary - Twin Cam R39954-99A
DRAG SPECIALTIES
$39.09DRAG SPECIALTIES Tensioner Primary Twin Cam R39954-99ADRAG SPECIALTIES Tensioner - Primary - Twin Cam09500960- SKU:
- 09500960
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- PRIMARY
- PRODUCT NAME:
- TENSIONER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$39.09Qty in Cart: 0Quantity:Price:$39.09Subtotal: -
DRAG SPECIALTIES Tensioner - Secondary - Twin Cam R39964-99A
DRAG SPECIALTIES
$39.09DRAG SPECIALTIES Tensioner Secondary Twin Cam R39964-99ADRAG SPECIALTIES Tensioner - Secondary - Twin Cam09500961- SKU:
- 09500961
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- TYPE:
- SECONDARY
- PRODUCT NAME:
- TENSIONER
- UNITS:
- EACH
$39.09Qty in Cart: 0Quantity:Price:$39.09Subtotal: -
DRAG SPECIALTIES Piston - Twin Cam 21988-07
DRAG SPECIALTIES
$131.79DRAG SPECIALTIES Piston Twin Cam 21988-07OEM quality cast aluminum alloy construction, Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines, Ideal for OEM replacement, Economical...09110017- SKU:
- 09110017
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- BORE SIZE IMPERIAL:
- 3.750'
- PISTON DIAMETER IMPERIAL:
- 3.750'
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PRODUCT NAME:
- PISTON
$131.79Qty in Cart: 0Quantity:Price:$131.79Subtotal: -
DRAG SPECIALTIES Piston - Twin Cam 21989-07+.005
DRAG SPECIALTIES
$147.24DRAG SPECIALTIES Piston Twin Cam 21989-07+.005OEM quality cast aluminum alloy construction, Some fitments feature pistons with a coating that extends piston life, reduces friction and allows for cooler running engines, Ideal for OEM replacement,...09110022- SKU:
- 09110022
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- PISTON DIAMETER IMPERIAL:
- 3.875'
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE - OVERSIZE:
- +0,005'
- COMPRESSION RATIO IMPERIAL:
- 9.6:1
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- PRODUCT NAME:
- PISTON
$147.24 -
DRAG SPECIALTIES Piston - Twin Cam 21930-99-005
DRAG SPECIALTIES
$153.42DRAG SPECIALTIES Piston Twin Cam 21930-99-005Piston for Twin Cam motors09110042- SKU:
- 09110042
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE - OVERSIZE:
- +0,005'
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 3.750'
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.005'
$153.42 -
DRAG SPECIALTIES Pushrod Tube Kit - Big Twin 75715
DRAG SPECIALTIES
$117.37DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75715Kits include upper and lower tubes, clips, cups, springs and washers (O-rings/corks sold separately), One kit will do a complete engineDS193761- SKU:
- DS193761
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- BASE COLOR:
- SILVER
- BASE FINISH:
- CHROME
- TYPE:
- PUSHROD
- UNITS:
- KIT
- PRODUCT NAME:
- TUBE KIT
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
$117.37Qty in Cart: 0Quantity:Price:$117.37Subtotal: -
DRAG SPECIALTIES Pushrod Tube Kit - Big Twin 74951
DRAG SPECIALTIES
$133.85DRAG SPECIALTIES Pushrod Tube Kit Big Twin 74951Kits include upper and lower tubes, clips, cups, springs and washers (O-rings/corks sold separately), One kit will do a complete engineDS193764- SKU:
- DS193764
- Availability:
- Ships Same Business Day
- Weight:
- 1.19 LBS
- PRODUCT NAME:
- TUBE KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- BASE FINISH:
- CHROME
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- TYPE:
- PUSHROD
$133.85 -
DRAG SPECIALTIES Pushrod Tube Assembly - XL 72629
DRAG SPECIALTIES
$33.94DRAG SPECIALTIES Pushrod Tube Assembly XL 72629Original-style replacement for XL models; includes everything needed, Each motor requires four tube assemblies.DS193787- SKU:
- DS193787
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- TUBE ASSEMBLY
- TYPE:
- PUSHROD
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$33.94 -
DRAG SPECIALTIES Pushrod Tube Assembly - Panhead 72703
DRAG SPECIALTIES
$36.00DRAG SPECIALTIES Pushrod Tube Assembly Panhead 72703Original-style replacement for Panhead models; includes everything needed, Each motor requires four tube assemblies.DS193788- SKU:
- DS193788
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- BASE FINISH:
- CHROME
- TYPE:
- PUSHROD
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- TUBE ASSEMBLY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$36.00 -
DRAG SPECIALTIES Chrome Filter Mount - 80" 74900
DRAG SPECIALTIES
$85.44DRAG SPECIALTIES Chrome Filter Mount 80" 74900Designed to replace the OEM cast mount, Includes 3/4"-16 oil filter adapter, Mount with OEM hardware, 11/16" threads accept OEM hard linesDS275107- SKU:
- DS275107
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- PRODUCT NAME:
- MOUNT
- BASE FINISH:
- CHROME
- TYPE:
- OIL FILTER
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$85.44Qty in Cart: 0Quantity:Price:$85.44Subtotal: -
CUSTOM CYCLE ENGINEERING Rocker Covers - Natural FRC 2003-3
CUSTOM CYCLE ENGINEERING
$457.95CUSTOM CYCLE ENGINEERING Rocker Covers Natural FRC 2003-3Original Randy Smith design, Made from 356 T-6 aluminum, Designed to eliminate the oil seepage associated with the stock Panhead rocker box covers (12-bolt design), Made in the U.S.A.09400558- SKU:
- 09400558
- Availability:
- Ships Same Business Day
- Weight:
- 6.31 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- PAIR
- STYLE:
- FINNED
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- 356 T-6 ALUMINUM
- PRODUCT NAME:
- COVER
$457.95 -
CUSTOM CYCLE ENGINEERING Rocker Cover - Finned - Polished - EVO CCE5833
CUSTOM CYCLE ENGINEERING
$475.95CUSTOM CYCLE ENGINEERING Rocker Cover Finned Polished EVO CCE5833Original Randy Smith design, Top covers only, Features a guaranteed fit and are compatible with the very latest breather system (early breathers too), Include adequate clearance for all...09400983- SKU:
- 09400983
- Availability:
- Ships Same Business Day
- Weight:
- 3.85 LBS
- BASE FINISH:
- POLISHED
- TYPE:
- ROCKER BOX
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- ALUMINUM
- COLOR/FINISH:
- POLISHED
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
$475.95 -
CUSTOM CYCLE ENGINEERING Top Stabilizer Link - FXD TSL 2014-2
CUSTOM CYCLE ENGINEERING
$391.95CUSTOM CYCLE ENGINEERING Top Stabilizer Link FXD TSL 2014-2Reduces engine vibration and aligns power train, Adjustable rubber-isolated design, Greatly reduces vibration especially at high speeds, Replaces stock link which is metal-to-metal from top motor...09330136- SKU:
- 09330136
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- PRODUCT NAME:
- STABILIZER
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- TOP
- TYPE:
- ENGINE
$391.95 -
CUSTOM CYCLE ENGINEERING Rocker Covers - Polished FRC 2003-2
CUSTOM CYCLE ENGINEERING
$584.95CUSTOM CYCLE ENGINEERING Rocker Covers Polished FRC 2003-2Original Randy Smith design, Made from 356 T-6 aluminum, Designed to eliminate the oil seepage associated with the stock Panhead rocker box covers (12-bolt design), Made in the U.S.A.09400557- SKU:
- 09400557
- Availability:
- Ships Same Business Day
- Weight:
- 6.24 LBS
- UNITS:
- PAIR
- COLOR/FINISH:
- POLISHED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- MATERIAL:
- 356 T-6 ALUMINUM
- TYPE:
- ROCKER BOX
$584.95 -
CIRO Front Stabilizer Link Cover 73051
CIRO
$33.99CIRO Front Stabilizer Link Cover 73051Fix the eyesore of the engine stabilizer with this smooth black cover that will make it melt right into your bike., Quick and easy installation, Black powder coated aluminum, Looks great with Ciro engine covers and...09401772- SKU:
- 09401772
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- STABILIZER LINK
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
$33.99 -
ANDREWS Cam - M462 - M8 217462
ANDREWS
$268.95ANDREWS Cam M462 M8 217462ANDREWS Cam - M462 - M809251205- SKU:
- 09251205
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- INTAKE DURATION IMPERIAL:
- 200°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 94°
- EXHAUST CLOSE IMPERIAL:
- 00°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.080'
- EXHAUST LIFT IMPERIAL:
- 0.460'
- EXHAUST OPEN IMPERIAL:
- 40°
- INTAKE LIFT IMPERIAL:
- 0.460'
- RIDING STYLE:
- STREET
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 110°
- MODEL:
- M462
- EXHAUST DURATION IMPERIAL:
- 220°
- INTAKE CLOSE IMPERIAL:
- 14°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.106'
- INTAKE OPEN IMPERIAL:
- 6°
- PRODUCT NAME:
- CAMSHAFT KIT
- UNITS:
- KIT
$268.95 -
ANDREWS Cam - M464 - M8 217464
ANDREWS
$268.95ANDREWS Cam M464 M8 217464ANDREWS Cam - M464 - M809251206- SKU:
- 09251206
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- EXHAUST OPEN IMPERIAL:
- 50°
- EXHAUST DURATION IMPERIAL:
- 230°
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 115°
- INTAKE DURATION IMPERIAL:
- 210°
- EXHAUST CLOSE IMPERIAL:
- 00°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.080'
- EXHAUST LIFT IMPERIAL:
- 0.460'
- INTAKE CLOSE IMPERIAL:
- 24°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 099°
- RIDING STYLE:
- STREET
- INTAKE LIFT AT TDC IMPERIAL:
- 0.106'
- INTAKE LIFT IMPERIAL:
- 0.464'
- INTAKE OPEN IMPERIAL:
- 6°
- MODEL:
- M464
- PRODUCT NAME:
- CAMSHAFT KIT
- UNITS:
- KIT
$268.95
