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
-
Wiseco Ring Set 3.457in 0.020in Oversize for Harley-Davidson FL 1948-1964 3457X
WISECO
$52.95Worn or damaged piston rings are a silent killer of engine efficiency—they directly impact compression, blow-by, and power output. The Wiseco Ring Set 3457X delivers precision-engineered sealing for your Big Twin, restoring the combustion efficiency your...3457X- SKU:
- 3457X
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- BORE SIZE IMPERIAL:
- 3.457'
- MODEL:
- X-RING
- BORE - OVERSIZE:
- +0,020'
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- RING MATERIAL:
- STEEL
- UNITS:
- SET
$52.95 -
Wiseco Ring Set Big Twin 1965-1980 Harley-Davidson 1200 Electra Glide FLH 3467X
WISECO
$52.95Worn or damaged piston rings are a primary cause of blow-by, oil consumption, and power loss in classic Big Twin engines. The Wiseco Ring Set 3467X restores proper combustion sealing and cylinder compression, bringing your 1965-1980 Harley-Davidson 1200...3467X- SKU:
- 3467X
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE - OVERSIZE:
- +0,030'
- MODEL:
- X-RING
- PRODUCT NAME:
- PISTON RING
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- BORE SIZE IMPERIAL:
- 3.437'
- RIDING STYLE:
- STREET
- RING MATERIAL:
- STEEL
- UNITS:
- SET
$52.95 -
Wiseco Ring Set 3.447in 1948-1964 Harley-Davidson FLH 3447X
WISECO
$52.95Worn piston rings are the silent killer of engine efficiency—they let combustion pressure escape, rob you of power, and increase blow-by that fouls your oil. The Wiseco Ring Set 3447X restores proper compression sealing in your Big Twin, bringing back...3447X- SKU:
- 3447X
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.447'
- BORE - OVERSIZE:
- +0,010'
- MODEL:
- X-RING
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- RING MATERIAL:
- STEEL
- UNITS:
- SET
$52.95 -
Wiseco Ring Set Big Twin 1948-1980 3.437in 3477X
WISECO
$52.95Maintaining proper ring seal is critical for preserving compression, controlling blow-by, and maximizing combustion efficiency in your Big Twin engine. The Wiseco 3477X Ring Set delivers precision-engineered sealing that prevents oil consumption and...3477X- SKU:
- 3477X
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE - OVERSIZE:
- +0,040'
- BORE OVERSIZE - IMPERIAL:
- +0.040'
- BORE SIZE IMPERIAL:
- 3.437'
- RING MATERIAL:
- STEEL
- UNITS:
- SET
- MODEL:
- X-RING
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
$52.95Qty in Cart: 0Quantity:Price:$52.95Subtotal: -
Wiseco Piston Kit 1200 Custom 2004-2019 Standard K1746
WISECO
$466.95A top-end rebuild demands precision components that can handle sustained power delivery without compromise. The Wiseco Piston Kit K1746 delivers the durability and reliability your 1200 Sportster needs, whether you're refreshing a tired engine or pushing...09030583- SKU:
- 09030583
- Availability:
- Ships Same Business Day
- Weight:
- 2.15 LBS
- DISPLACEMENT:
- 1200 CC
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE IMPERIAL:
- 3.498'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- TYPE:
- TOP END
- UNITS:
- EACH
$466.95Qty in Cart: 0Quantity:Price:$466.95Subtotal: -
Wiseco 1200 Sportster Piston Kit 1988-2003 .010 K1747
WISECO
$466.95If you're rebuilding your 1200 Sportster's top end or planning a performance overbore, a quality piston kit is non-negotiable—it's the foundation of reliable power. The Wiseco K1747 delivers forged pistons cast from high-silicon aluminum alloy,...09030584- SKU:
- 09030584
- Availability:
- Ships Same Business Day
- Weight:
- 2.23 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- DISPLACEMENT:
- 1200 CC
- RIDING STYLE:
- STREET
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- BORE - OVERSIZE:
- +0,010'
- BORE SIZE IMPERIAL:
- 3.498'
- TYPE:
- TOP END
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PRODUCT NAME:
- REBUILD KIT
$466.95 -
Wiseco 103ci Reverse Dome Piston Kit 2007-2016 Harley-Davidson FLHRS K2789
WISECO
$576.95If you're running a 103ci motor in your Twin Cam Harley, piston quality directly impacts your engine's reliability and power output—especially under boost or high-RPM conditions. The Wiseco K2789 reverse dome kit delivers the strength and thermal...09101998- SKU:
- 09101998
- Availability:
- Ships Same Business Day
- Weight:
- 2.34 LBS
- BORE - OVERSIZE:
- 0,125'
- DISPLACEMENT:
- 1700 CC
- BORE SIZE IMPERIAL:
- 3.875'
- SKIRT COATING:
- ARMORFIT™
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- MODEL:
- VM SERIES
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- 0.125'
- PISTON HEAD SHAPE:
- REVERSE
- UNITS:
- KIT
$576.95 -
Wiseco Piston Kit Standard High Compression 1978-1984 Harley-Davidson FLH K1623
WISECO
$422.95A worn or stock piston setup limits your Big Twin's potential for reliable power and efficiency. The Wiseco High Compression Piston Kit delivers the strength and precision engineering needed for serious top-end rebuilds, whether you're overboring for...K1623- SKU:
- K1623
- Availability:
- Ships Same Business Day
- Weight:
- 3.31 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- BORE SIZE IMPERIAL:
- 3.497'
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- DISPLACEMENT:
- 1340 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH IMPERIAL:
- 4-1/4'
$422.95 -
Wiseco High Compression Piston Kit 1978-1984 Harley-Davidson FLH K1624
WISECO
$384.95A worn or compromised top end will bleed horsepower and reliability—especially on a vintage Big Twin that demands precision engineering. This Wiseco High Compression Piston Kit delivers the strength and thermal stability you need to safely push higher...K1624- SKU:
- K1624
- Availability:
- Ships Same Business Day
- Weight:
- 3.38 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- DISPLACEMENT:
- 1345 CC
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,010'
- PISTON MATERIAL:
- FORGED
- BORE SIZE IMPERIAL:
- 3.507'
- PISTON MATERIAL:
- ALUMINUM ALLOY
$384.95 -
Wiseco Piston Kit 1978-1984 Harley-Davidson FLH Electra Glide K1625
WISECO
$422.95If you're planning a top-end rebuild on your classic FLH Electra Glide, you need pistons engineered to handle the demands of high-compression performance without compromise. Wiseco's high-silicon aluminum construction delivers the strength and durability...K1625- SKU:
- K1625
- Availability:
- Ships Same Business Day
- Weight:
- 3.31 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- +0,020'
- DISPLACEMENT:
- 1353 CC
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.517'
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
$422.95Qty in Cart: 0Quantity:Price:$422.95Subtotal: -
Wiseco Piston Kit High Compression 1978-1984 Harley-Davidson FLH K1626
WISECO
$422.95A complete piston rebuild kit designed specifically for your Big Twin engine, the Wiseco K1626 eliminates guesswork by including everything needed for a proper top-end refresh or overbore. High-silicon aluminum construction delivers the strength and heat...K1626- SKU:
- K1626
- Availability:
- Ships Same Business Day
- Weight:
- 3.38 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,030'
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.528'
- PISTON MATERIAL:
- FORGED
- DISPLACEMENT:
- 1361 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
$422.95Qty in Cart: 0Quantity:Price:$422.95Subtotal: -
Wiseco Piston Kit Standard Evolution Big Twin 1340cc 1984-1998 K1640
WISECO
$384.95If you're rebuilding your Evolution Big Twin or planning a displacement increase, a quality piston kit is non-negotiable—it directly affects combustion efficiency, reliability, and how your engine handles boost or high RPM demands. The Wiseco K1640...K1640- SKU:
- K1640
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- PISTON MATERIAL:
- ALUMINUM
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE SIZE IMPERIAL:
- 3.498'
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 8.5:1
- DISPLACEMENT:
- 1340 CC
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- FORGED
$384.95Qty in Cart: 0Quantity:Price:$384.95Subtotal: -
Wiseco Piston Kit 1984-1999 Harley-Davidson Evolution Big Twin 1361cc K1643
WISECO
$384.95A top-end rebuild demands precision components that can handle the demands of Evolution Big Twin performance. The Wiseco K1643 Piston Kit delivers the complete package—forged pistons, rings, pins, and gaskets—engineered from high-silicon aluminum alloy...K1643- SKU:
- K1643
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- COMPRESSION RATIO IMPERIAL:
- 8.5:1
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,030'
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.528'
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- DISPLACEMENT:
- 1361 CC
- UNITS:
- EACH
$384.95Qty in Cart: 0Quantity:Price:$384.95Subtotal: -
Wiseco Piston Kit Standard 3.498in 9.5:1 Compression Harley-Davidson XL883N 2009-2018 K1655
WISECO
$409.95A top-end rebuild is only as strong as your pistons. The Wiseco K1655 kit delivers the durability and precision your 883 XL needs to handle aggressive riding, whether you're refreshing tired cylinders or pushing displacement limits with a bore job. This...K1655- SKU:
- K1655
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- BORE SIZE IMPERIAL:
- 3.498'
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
$409.95 -
Wiseco Piston Kit Standard 1988-2003 Harley-Davidson Sportster 1200 XLH K1660
WISECO
$447.95When you're ready to rebuild your Sportster 1200's top end or push displacement through overboring, the Wiseco Piston Kit delivers the precision components and durability you need to do it right. Built from high-silicon aluminum alloy, these forged...K1660- SKU:
- K1660
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE SIZE IMPERIAL:
- 3.498'
- TYPE:
- TOP END
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
$447.95 -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-119W
REVOLUTION PERFORMANCE, LLC
$529.95High-performance pistons demand precision engineering and materials built to withstand extreme combustion pressures and temperature swings. The Revolution Performance RP301-119W piston kit delivers the durability and reliability that professional racers...09106376- SKU:
- 09106376
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- DISPLACEMENT:
- 117'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.125'
- PISTON HEAD SHAPE:
- DISHED
$529.95 -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-119WD
REVOLUTION PERFORMANCE, LLC
$529.95High-performance engine demands pistons engineered for reliability under extreme conditions. The Revolution Performance RP301-119WD delivers the strength and thermal stability required for sustained boost and high RPM operation, with precision...09106377- SKU:
- 09106377
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- UNITS:
- KIT
- DISPLACEMENT:
- 117'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.125'
- COMPRESSION RATIO IMPERIAL:
- 11.2:1
- PISTON HEAD SHAPE:
- DOMED
$529.95 -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-111W
REVOLUTION PERFORMANCE, LLC
$529.95High-performance pistons demand precision engineering and materials that can withstand extreme combustion pressures and temperature swings. The REVOLUTION PERFORMANCE RP301-111W Piston Kit delivers custom-forged construction with skirt coating and offset...09106378- SKU:
- 09106378
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.250'
- DISPLACEMENT:
- 124'
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.2:1
- PISTON HEAD SHAPE:
- FLAT TOP
$529.95 -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-113W
REVOLUTION PERFORMANCE, LLC
$559.95When you're pushing your engine to the limit, stock pistons simply won't cut it. The Revolution Performance RP301-113W piston kit delivers the durability and precision needed to handle elevated boost pressures and sustained high-RPM operation without...09106379- SKU:
- 09106379
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- COMPRESSION RATIO IMPERIAL:
- 11.4:1
- DISPLACEMENT:
- 131'
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- FLAT TOP
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PISTON KIT
$559.95Qty in Cart: 0Quantity:Price:$559.95Subtotal: -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-601W
REVOLUTION PERFORMANCE, LLC
$499.95High-performance pistons demand precision engineering and superior materials to withstand extreme combustion pressures and temperature cycling. The REVOLUTION PERFORMANCE RP301-601W Piston Kit delivers custom-forged construction with low-expansion...09106380- SKU:
- 09106380
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.2:1
- UNITS:
- KIT
- DISPLACEMENT:
- 124'
- PISTON HEAD SHAPE:
- FLAT TOP
- BORE SIZE IMPERIAL:
- 4.250'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
$499.95Qty in Cart: 0Quantity:Price:$499.95Subtotal:
