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
-
KIBBLEWHITE Valve Seat 10-HC518
KIBBLEWHITE
$14.47Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...09263362- SKU:
- 09263362
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- EXHAUST
- INSIDE DIAMETER IMPERIAL:
- 1.700'
- OUTSIDE DIAMETER IMPERIAL:
- 2.040'
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE SEAT
- RIDING STYLE:
- STREET
$14.47Qty in Cart: 0Quantity:Price:$14.47Subtotal: -
KIBBLEWHITE Valve Seat 10-HC525
KIBBLEWHITE
$14.47Copper-based material designed specifically for use with titanium valves in high performance applications, Give the seat excellent thermal characteristics as well as resistance to corrosion and wear, These seats are the result of a two year KPMI R&D...09263363- SKU:
- 09263363
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- EXHAUST
- UNITS:
- EACH
- INSIDE DIAMETER IMPERIAL:
- 1.750'
- OUTSIDE DIAMETER IMPERIAL:
- 2.163'
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE SEAT
- RIDING STYLE:
- STREET
$14.47 -
KB PERFORMANCE Forged Piston Kit - Twin Cam KB660C.005
KB PERFORMANCE
$307.29Pistons forged from 4032 aluminum alloy, Offset pin design for quiet operation, Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings, Piston pin lock rings available separately, Replacement rings are also available separately09103971- SKU:
- 09103971
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.875'
- BORE - OVERSIZE:
- +0,005'
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
$307.29 -
KB PERFORMANCE Super-Duty Piston KB660LCA.STD
KB PERFORMANCE
$390.86New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder, Skirt coating eliminates piston rock for the best...09105045- SKU:
- 09105045
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- UNITS:
- KIT
- BORE SIZE METRIC:
- 98.40 MM
- DISPLACEMENT:
- 103'
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$390.86 -
KB PERFORMANCE Super-Duty Piston KB662LCA.010
KB PERFORMANCE
$390.86New skirt coating technology is applied to the entire thickness of the piston-to-wall clearance for a zero install clearance; coating then abrades in on start-up to hone for the perfect fit per cylinder, Skirt coating eliminates piston rock for the best...09105050- SKU:
- 09105050
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- BORE SIZE METRIC:
- 104.80 MM
- DISPLACEMENT:
- 117'
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
$390.86 -
JAMES GASKET Clutch Derby Cover Gasket 25416-14
JAMES GASKET
$49.40JAMES GASKET Clutch Derby Cover Gasket09345379- SKU:
- 09345379
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- DERBY COVER
$49.40 -
JAMES GASKET Cylinder Head Gasket - M8 JGI-16500326
JAMES GASKET
$34.00JAMES GASKET Cylinder Head Gasket - M809345963- SKU:
- 09345963
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER HEAD
- UNITS:
- 5 PACK
$34.00 -
JAMES GASKET Cylinder Base Gasket - M8 JGI-16500332
JAMES GASKET
$35.95JAMES GASKET Cylinder Base Gasket - M809345964- SKU:
- 09345964
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
$35.95 -
JAMES GASKET Lifter Cover Gasket - M8 JGI-25700362
JAMES GASKET
$12.95JAMES GASKET Lifter Cover Gasket - M809345965- SKU:
- 09345965
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- TAPPET BLOCK
- UNITS:
- PAIR
$12.95 -
JAMES GASKET Piston Squirter Gasket - M8 JGI-25700433
JAMES GASKET
$17.10JAMES GASKET Piston Squirter Gasket - M809345967- SKU:
- 09345967
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- 10 PACK
- TYPE:
- OIL JET ASSEMBLY
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$17.10 -
JAMES GASKET Cam Cover Gasket - M8 JGI-25700370
JAMES GASKET
$39.70JAMES GASKET Cam Cover Gasket - M809345968- SKU:
- 09345968
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CAM COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$39.70 -
JAMES GASKET Air Cleaner Gasket - M8 JGI-29000149
JAMES GASKET
$8.00JAMES GASKET Air Cleaner Gasket - M809345969- SKU:
- 09345969
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- AIR FILTER
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
$8.00 -
Hastings HASTINGS Piston Rings - XL 7003
HASTINGS
$74.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750610- SKU:
- DS750610
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.1875'
- RING MATERIAL:
- MOLY COATED
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- RIDING STYLE:
- STREET
$74.95 -
Hastings HASTINGS Piston Rings - XL 7003020
HASTINGS
$74.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750612- SKU:
- DS750612
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- RING MATERIAL:
- MOLY COATED
- BORE - OVERSIZE:
- +0,020'
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.207'
- RIDING STYLE:
- STREET
- UNITS:
- SET
$74.95 -
Hastings HASTINGS Piston Rings - XL 7003030
HASTINGS
$74.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750613- SKU:
- DS750613
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.217'
- RING MATERIAL:
- MOLY COATED
- BORE - OVERSIZE:
- +0,030'
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- STYLE:
- OEM REPLACEMENT
$74.95 -
Hastings HASTINGS Piston Rings - Shovelhead 6482
HASTINGS
$56.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750620- SKU:
- DS750620
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.437'
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- RIDING STYLE:
- STREET
- RING MATERIAL:
- CAST
$56.95 -
Hastings HASTINGS Piston Rings - Shovelhead 6482010
HASTINGS
$56.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750621- SKU:
- DS750621
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,010'
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- CAST
- STYLE:
- OEM REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.447'
- RIDING STYLE:
- STREET
$56.95 -
Hastings HASTINGS Piston Rings - Shovelhead 6482020
HASTINGS
$56.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750622- SKU:
- DS750622
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- BORE - OVERSIZE:
- +0,020'
- BORE SIZE IMPERIAL:
- 3.457'
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- CAST
- STYLE:
- OEM REPLACEMENT
- RIDING STYLE:
- STREET
- UNITS:
- SET
$56.95 -
Hastings HASTINGS Piston Rings - Shovelhead 6482030
HASTINGS
$56.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750623- SKU:
- DS750623
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.467'
- BORE - OVERSIZE:
- +0,030'
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- CAST
- STYLE:
- OEM REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- RIDING STYLE:
- STREET
- UNITS:
- SET
$56.95 -
Hastings HASTINGS Piston Rings - Shovelhead 6482040
HASTINGS
$56.95Features a cast or moly top ring, Reverse torsional taper face second ring and easy "spiral on" three-piece oil ringsDS750624- SKU:
- DS750624
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.040'
- BORE - OVERSIZE:
- +0,040'
- BORE SIZE IMPERIAL:
- 3.477'
- RIDING STYLE:
- STREET
- RING MATERIAL:
- CAST
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$56.95
