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
-
On Sale
EASTERN MOTORCYCLE PARTS Countershaft Thrust Washer - XL A-35327-SET
EASTERN MOTORCYCLE PARTS
MSRP: $47.95Now: $43.63Was: $47.95First gear thrust washers endure extreme loads during acceleration and gear engagement, making them a critical wear item in high-demand riding conditions. Over time, these washers compress and...DS194184- SKU:
- DS194184
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MOUNTING POSITION:
- FIRST GEAR
- RIDING STYLE:
- STREET
- STYLE:
- 4-SPEED
- THICKNESS:
- 0,51 MM - 1,91 MM (0,020' - 0,075')
- THICKNESS IMPERIAL:
- 0,020' - 0,075'
- TYPE:
- COUNTERSHAFT
- PRODUCT NAME:
- THRUST WASHER
- THICKNESS METRIC:
- 0.51 MM - 1.91 MM
- UNITS:
- SET
MSRP: $47.95Now: $43.63Was: $47.95 -
On Sale
EASTERN MOTORCYCLE PARTS Pushrod - Left End A-37090-84A
EASTERN MOTORCYCLE PARTS
MSRP: $24.95Now: $22.70Was: $24.95Maintaining proper valve train geometry is critical to consistent engine performance and longevity. A worn or damaged pushrod compromises valve timing and can lead to catastrophic engine damage. This...DS192524- SKU:
- DS192524
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MOUNTING POSITION:
- LEFT
- PRODUCT NAME:
- PUSHROD END
- RIDING STYLE:
- STREET
- DIAMETER IMPERIAL:
- 2.250'
- UNITS:
- EACH
- TYPE:
- CLUTCH
MSRP: $24.95Now: $22.70Was: $24.95 -
On Sale
EASTERN MOTORCYCLE PARTS Left Pushrod End A-37090-98
EASTERN MOTORCYCLE PARTS
MSRP: $24.95Now: $22.70Was: $24.95A worn or damaged pushrod end compromises valve train precision and can lead to catastrophic engine damage if left unaddressed. The Eastern Motorcycle Parts Left Pushrod End A-37090-98 delivers...DS192525- SKU:
- DS192525
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- DIAMETER IMPERIAL:
- 2.255'
- MOUNTING POSITION:
- LEFT
- UNITS:
- EACH
- PRODUCT NAME:
- PUSHROD END
- TYPE:
- CLUTCH
- RIDING STYLE:
- STREET
MSRP: $24.95Now: $22.70Was: $24.95Qty in Cart: 0Quantity:Price:MSRP: $24.95Now: $22.70Was: $24.95Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Cam Bushing Kit - Big Twin 15-0131
EASTERN MOTORCYCLE PARTS
MSRP: $99.95Now: $90.95Was: $99.95Precision cam timing depends on tight tolerances between your cam and crankshaft—worn or damaged bushings compromise both. This complete kit eliminates guesswork by providing OEM-quality replacements...DS194195- SKU:
- DS194195
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- BUSHING KIT
- TYPE:
- CAM
- UNITS:
- KIT
MSRP: $99.95Now: $90.95Was: $99.95 -
Hiflofiltro Oil Filter for Harley-Davidson Street 500 2015-2020 and Street 750 2015-2020 HF175
HIFLOFILTRO
$8.74Keeping your Street 500 or Street 750 running at peak performance starts with engine protection—and that means choosing an oil filter engineered to handle the demands of real riding. The Hiflofiltro...07120503- SKU:
- 07120503
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- BASE COLOR:
- BLACK
- LENGTH METRIC:
- 70 MM
- STYLE:
- PREMIUM
- UNITS:
- EACH
- WIDTH METRIC:
- 50 MM
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
$8.74 -
HifloFiltro Chrome Oil Filter for Harley-Davidson XLH883 1980-1984 HF172C
HIFLOFILTRO
$12.87Keep your XLH883's engine running clean and protected with the HifloFiltro HF172C—a chrome oil filter engineered to meet or exceed OEM specifications while delivering superior filtration under...HF172C- SKU:
- HF172C
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- PREMIUM
- TYPE:
- SPIN-ON
- WIDTH METRIC:
- 76 MM
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- TRI-FIBER
- LENGTH METRIC:
- 68 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
$12.87 -
Hiflofiltro Chrome Oil Filter for Harley Davidson FXD Dyna Super Glide 1996-1998 HF173C
HIFLOFILTRO
$17.34Keeping your FXD Dyna's engine running clean is non-negotiable for longevity and performance—and the Hiflofiltro HF173C delivers industry-standard filtration in a chrome-finished package that matches...HF173C- SKU:
- HF173C
- Availability:
- Ships Same Business Day
- Weight:
- 0.87 LBS
- COLOR/FINISH:
- CHROME
- STYLE:
- PREMIUM
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- TRI-FIBER
- LENGTH METRIC:
- 141 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- TYPE:
- SPIN-ON
- WIDTH METRIC:
- 76 MM
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- OIL FILTER
$17.34 -
Hiflo V-Rod 2002-2017 Oil Filter Chrome HF174C
HIFLOFILTRO
$12.37Effective oil filtration is non-negotiable for engine longevity, especially in high-performance applications where operating temperatures and pressures demand reliable protection. The HIFLOFILTRO...HF174C- SKU:
- HF174C
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- RIDING STYLE:
- STREET
- TYPE:
- SPIN-ON
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- PREMIUM
- BASE FINISH:
- CHROME
- LENGTH METRIC:
- 86 MM
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- TRI-FIBER
- MATERIAL:
- STEEL
- WIDTH METRIC:
- 76 MM
$12.37 -
Wiseco Piston Kit with Gasket for 2006 Harley-Davidson FLST Heritage Softail VT2719
WISECO
$716.95A top-end rebuild demands precision components that won't compromise engine integrity or performance. The Wiseco Piston Kit delivers the complete solution—forged pistons, rings, wrist pins, and...09030791- SKU:
- 09030791
- Availability:
- Ships Same Business Day
- Weight:
- 3.97 LBS
- DISPLACEMENT:
- 1546 CC
- TYPE:
- TOP END
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE IMPERIAL:
- 3.875'
- STROKE LENGTH IMPERIAL:
- 4'
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$716.95 -
Wiseco Piston Kit 2022-2023 Harley-Davidson Street Glide ST FLHXST K2801
WISECO
$524.95If you're pushing your M8 Street Glide ST to its limits, factory pistons won't cut it. The Wiseco K2801 kit delivers the compression ratio and protective coatings you need to safely extract more...09031675- SKU:
- 09031675
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- ARMORFIT™
- DISPLACEMENT:
- 121'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.188'
- PISTON MATERIAL:
- ARMORX™
- BORE - OVERSIZE:
- +0,188'
- BORE SIZE IMPERIAL:
- 4.135'
$524.95Qty in Cart: 0Quantity:Price:$524.95Subtotal: -
Wiseco Piston Kit for Harley M8 128ci 2017-2022 K2802
WISECO
$576.95Stock pistons can't handle the demands of a high-performance M8—especially if you're running forced induction or aggressive tuning. The Wiseco K2802 delivers the durability and power gains you need...09031676- SKU:
- 09031676
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 128'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- PISTON MATERIAL:
- ARMORX™
- PRODUCT NAME:
- PISTON KIT
- SKIRT COATING:
- ARMORFIT™
$576.95 -
Wiseco Piston Kit 114in 2020-2023 Harley-Davidson FLHXS K2803
WISECO
$576.95If you're building or rebuilding your M8 engine for real power, piston quality directly determines your compression efficiency, combustion velocity, and longevity under high RPM stress. The Wiseco...09031677- SKU:
- 09031677
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- ARMORFIT™
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- BORE SIZE IMPERIAL:
- 4.016'
- DISPLACEMENT:
- 114'
- PISTON MATERIAL:
- ARMORX™
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- UNITS:
- KIT
$576.95 -
Wiseco Piston Kit 117in 4.075in Bore 11.1:1 Compression Harley-Davidson FLFBS 2018-2023 K2804
WISECO
$576.95If you're running a 117" M8 in your 2018-2023 FLFBS, this Wiseco piston kit delivers the compression ratio and material science your engine demands for reliable power. The ArmorX™ and ArmorFit™...09031678- SKU:
- 09031678
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.1:1
- DISPLACEMENT:
- 117'
- PISTON MATERIAL:
- ARMORX™
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- ARMORFIT™
- BORE SIZE IMPERIAL:
- 4.075'
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- UNITS:
- KIT
$576.95 -
Wiseco Piston Kit 124in 11:1 Compression for Harley-Davidson Touring Models K2787
WISECO
$524.95If you're running M8 Touring power, factory pistons are holding back what your engine can really deliver. The Wiseco K2787 kit steps up compression to 11:1, unlocking measurable gains in power and...09031554- SKU:
- 09031554
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PISTON MATERIAL:
- ARMORX™
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DISHED
- BORE - OVERSIZE:
- +0,313'
- BORE SIZE IMPERIAL:
- 4.250'
- DISPLACEMENT:
- 2035 CC
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- ARMORFIT™
- BORE OVERSIZE - IMPERIAL:
- +0.313'
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$524.95Qty in Cart: 0Quantity:Price:$524.95Subtotal: -
Wiseco Piston Kit for Harley-Davidson 1999-2006 Road King FLHR 4.000" Stroke 9.5:1 Compression K0207PS
WISECO
$322.95If you're running a 1999-2006 Road King and want to unlock serious power gains without compromising reliability, this Wiseco piston kit is the foundation you need. The forged construction and...09031558- SKU:
- 09031558
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4'
- STYLE:
- TRACKER™ SERIES
- BORE - OVERSIZE:
- STANDARD
- DISPLACEMENT:
- 1546 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- PISTON HEAD SHAPE:
- DOMED
- PISTON MATERIAL:
- FORGED
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
$322.95 -
Wiseco Piston Kit 3.875 in. Bore 9:1 CR for Harley-Davidson Twin Cam 103 2010-2017 K2788
WISECO
$576.95Stock pistons in your Twin Cam 103 are a limiting factor when you're serious about performance and reliability. Wiseco's forged construction and ArmorGlide™ coating reduce friction and thermal...09101996- SKU:
- 09101996
- Availability:
- Ships Same Business Day
- Weight:
- 2.34 LBS
- BORE - OVERSIZE:
- 0,125'
- PISTON HEAD SHAPE:
- REVERSE
- MODEL:
- VM SERIES
- SKIRT COATING:
- ARMORFIT™
- BORE OVERSIZE - IMPERIAL:
- 0.125'
- BORE SIZE IMPERIAL:
- 3.875'
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- DISPLACEMENT:
- 1691 CC
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
$576.95 -
Wiseco Piston Kit 3.875 in. Bore 10.5:1 Compression Ratio Harley-Davidson Twin Cam 103 2011-2016 K2792
WISECO
$576.95If you're pushing your Twin Cam 103 hard—whether on the dyno, the track, or the street—stock pistons will eventually let you down. The Wiseco K2792 kit gives you forged pistons with ArmorGlide™...09101999- SKU:
- 09101999
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- BORE - OVERSIZE:
- 0,125'
- BORE OVERSIZE - IMPERIAL:
- 0.125'
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- DISPLACEMENT:
- 124'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- MODEL:
- VM SERIES
- PISTON HEAD SHAPE:
- POSITIVE
- SKIRT COATING:
- ARMORFIT™
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$576.95 -
Wiseco Piston Kit 103 Cubic Inch 2007-2017 K2793
WISECO
$576.95If you're building or rebuilding a high-displacement Twin Cam engine, piston selection directly impacts reliability, power delivery, and longevity under sustained load. The Wiseco K2793 combines...09102001- SKU:
- 09102001
- Availability:
- Ships Same Business Day
- Weight:
- 2.10 LBS
- BORE - OVERSIZE:
- 0,125'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON MATERIAL:
- ALUMINUM
- BORE OVERSIZE - IMPERIAL:
- 0.125'
- MODEL:
- VM SERIES
- DISPLACEMENT:
- 103'
- PISTON HEAD SHAPE:
- POSITIVE
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- SKIRT COATING:
- ARMORFIT™
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE SIZE IMPERIAL:
- 3.875'
- UNITS:
- KIT
$576.95 -
Wiseco Piston Kit 1984-1999 Harley-Davidson Big Twin 1340cc K1675
WISECO
$447.95A top-end rebuild demands precision components that can handle the stress of high-compression combustion cycle after cycle. Wiseco's high-silicon aluminum alloy pistons are engineered to resist...K1675- SKU:
- K1675
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE - OVERSIZE:
- +0,005'
- BORE SIZE IMPERIAL:
- 3.503'
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- UNITS:
- EACH
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 1342 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
$447.95 -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-104W
REVOLUTION PERFORMANCE, LLC
$495.95When you're pushing your engine to the limit, stock pistons become your weakest link. The Revolution Performance RP301-104W piston kit delivers the strength and thermal stability required for...09106370- SKU:
- 09106370
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.937'
- DISPLACEMENT:
- 98'
- COMPRESSION RATIO IMPERIAL:
- 10.3:1
$495.95
