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
Wiseco 1200cc Forged Piston Kit for Harley-Davidson 883 Sportster 1986-2025 K1682
WISECO
MSRP: $409.95Now: $348.00Was: $409.95Upgrade your motorcycle's performance with the WISECO Piston Kit, designed specifically for 883/1200 models. Crafted from high-silicon aluminum alloy, this kit ensures exceptional strength and reliability for your engine rebuild or overbore project. ...K1682- SKU:
- K1682
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- BORE SIZE IMPERIAL:
- 3.498'
- TYPE:
- TOP END
- UNITS:
- EACH
MSRP: $409.95Now: $348.00Was: $409.95 -
On Sale
Wiseco Piston Kit 1986-2003 Harley-Davidson Sportster 883 XLH K1684
WISECO
MSRP: $409.95Now: $348.00Was: $409.95Upgrade your motorcycle's performance with the WISECO Piston Kit, expertly crafted from high-silicon aluminum alloy for exceptional strength and durability. This comprehensive kit provides everything you need for a successful overbore or top-end rebuild,...K1684- SKU:
- K1684
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- BORE - OVERSIZE:
- +0,020'
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- BORE SIZE IMPERIAL:
- 3.518'
- TYPE:
- TOP END
- UNITS:
- EACH
MSRP: $409.95Now: $348.00Was: $409.95 -
On Sale
Wiseco 3.498in 10:1 Piston Kit for 1996-1998 Buell S1 Lightning K1700
WISECO
MSRP: $409.95Now: $348.00Was: $409.95Enhance your engine's performance with the WISECO Piston Kit K1700, expertly crafted from high-silicon aluminum alloy for exceptional strength and reliability. This comprehensive kit includes everything you need for a successful top-end rebuild or...K1700- SKU:
- K1700
- Availability:
- Ships Same Business Day
- Weight:
- 2.44 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 1200 CC
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 3.498'
- PISTON MATERIAL:
- ALUMINUM
- TYPE:
- TOP END
MSRP: $409.95Now: $348.00Was: $409.95 -
On Sale
Wiseco Piston Kit 1984-1998 Harley-Davidson FLHR Road King 3.518" Bore K1716
WISECO
MSRP: $409.95Now: $348.00Was: $409.95Experience unparalleled performance and reliability with the WISECO Piston Kit Evolution K1716. Crafted from a high-silicon aluminum alloy, this kit is engineered for strength and longevity, making it the ideal choice for overboring or rebuilding your...K1716- SKU:
- K1716
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE - OVERSIZE:
- +0,020'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- DISPLACEMENT:
- 1353 CC
- PISTON MATERIAL:
- ALUMINUM
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE SIZE IMPERIAL:
- 3.518'
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PISTON MATERIAL:
- FORGED
MSRP: $409.95Now: $348.00Was: $409.95 -
On Sale
Wiseco Piston Kit 3.508in 8.5:1 Compression 1994-1998 Harley-Davidson FLHR FLHRCI FLHRI K1641
WISECO
MSRP: $384.95Now: $327.00Was: $384.95Upgrade your motorcycle's performance with the WISECO Piston Kit, designed specifically for the Evolution Big Twin. Crafted from high-silicon aluminum alloy, this kit ensures exceptional strength and durability, making it ideal for both overboring and...K1641- SKU:
- K1641
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COMPRESSION RATIO IMPERIAL:
- 8.5:1
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 1345 CC
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE:
- +0,010'
- BORE SIZE IMPERIAL:
- 3.508'
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- UNITS:
- EACH
MSRP: $384.95Now: $327.00Was: $384.95 -
On Sale
Wiseco Piston Kit 3.518in Bore 8.5:1 Compression 1994-1998 Harley-Davidson Road King FLHR K1642
WISECO
MSRP: $384.95Now: $327.00Was: $384.95Upgrade your motorcycle's performance with the WISECO .020 Evolution Big Twin Piston Kit. Crafted from high-silicon aluminum alloy, this kit ensures exceptional strength and reliability for your engine rebuild or overbore project. It includes all...K1642- SKU:
- K1642
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- COMPRESSION RATIO IMPERIAL:
- 8.5:1
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE IMPERIAL:
- 3.518'
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 1353 CC
- BORE - OVERSIZE:
- +0,020'
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- UNITS:
- EACH
MSRP: $384.95Now: $327.00Was: $384.95 -
On Sale
Wiseco Ring Set 3527X for Harley Davidson FLH Electra Glide 1978-1984
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Enhance your engine's performance with the WISECO Ring Set 3527X, designed for durability and precision. This high-quality ring set ensures optimal sealing and reduced friction, making it an essential upgrade for any serious mechanic or enthusiast...3527X- SKU:
- 3527X
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- PRODUCT NAME:
- PISTON RING
- MODEL:
- X SERIES
- RING MATERIAL:
- STEEL
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,030'
- RIDING STYLE:
- STREET
- PISTON DIAMETER IMPERIAL:
- 3.528'
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Ring Set 3.538in 1984-1999 Harley-Davidson FLH FLHT FLST FXST 3537X
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Elevate your engine's performance with the WISECO Ring Set 3537X, designed for durability and precision. This high-quality ring set ensures optimal sealing and reduced friction, contributing to enhanced horsepower and efficiency. Perfect for both street...3537X- SKU:
- 3537X
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE - OVERSIZE:
- +0,040'
- MODEL:
- X SERIES
- PISTON DIAMETER IMPERIAL:
- 3.538'
- RING MATERIAL:
- STEEL
- UNITS:
- SET
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.040'
- PRODUCT NAME:
- PISTON RING
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Ring Set 3.498in. for Harley-Davidson FLH Electra Glide 1970-1985 3497X
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Enhance the performance of your engine with the WISECO Ring Set 3497X, designed for optimal sealing and durability. This high-quality ring set ensures efficient combustion and improved power output, making it an essential upgrade for any serious engine...3497X- SKU:
- 3497X
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE SIZE IMPERIAL:
- 3.498'
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- RING MATERIAL:
- STEEL
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,060'
- BORE OVERSIZE - IMPERIAL:
- +0.060'
- MODEL:
- X SERIES
- PISTON DIAMETER IMPERIAL:
- 3.498'
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Ring Set 3.457in 0.020in Oversize for Harley-Davidson FL 1948-1964 3457X
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Upgrade your engine's performance with the WISECO Ring Set Big Twin 3457X, designed specifically for one piston replacement. This high-quality ring set ensures optimal sealing and efficiency, allowing your engine to run smoothly and powerfully. ...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
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Ring Set Big Twin 1965-1980 Harley-Davidson 1200 Electra Glide FLH 3467X
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Upgrade your engine's performance with the WISECO Ring Set Big Twin 3467X, designed specifically for one piston replacement. These high-quality rings ensure optimal sealing and efficiency, enhancing your motorcycle's power and longevity. ...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
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Ring Set 3.447in 1948-1964 Harley-Davidson FLH 3447X
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Enhance the performance of your Big Twin engine with the WISECO Ring Set 3447X. Designed specifically for one piston, these replacement rings ensure optimal sealing and efficiency, allowing your engine to run smoother and more powerfully. Upgrade your...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
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Ring Set Big Twin 1948-1980 3.437in 3477X
WISECO
MSRP: $49.95Now: $42.00Was: $49.95Upgrade your engine's performance with the WISECO Ring Set Big Twin 3477X, designed specifically for one piston replacement. These high-quality rings ensure optimal sealing and improved combustion efficiency, making them an essential component for any...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
MSRP: $49.95Now: $42.00Was: $49.95 -
On Sale
Wiseco Piston Kit 1200 Custom 2004-2019 Standard K1746
WISECO
MSRP: $424.95Now: $361.00Was: $424.95Enhance your Sportster's performance with the WISECO Piston Kit, expertly crafted from high-silicon aluminum for exceptional durability and reliability. This comprehensive kit includes everything you need for a successful top-end rebuild or overbore,...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
MSRP: $424.95Now: $361.00Was: $424.95 -
On Sale
Wiseco 1200 Sportster Piston Kit 1988-2003 .010 K1747
WISECO
MSRP: $424.95Now: $361.00Was: $424.95Enhance the performance of your Sportster with the WISECO Piston Kit, expertly crafted from high-silicon aluminum alloy for exceptional durability and reliability. This comprehensive kit includes everything needed for overboring or rebuilding your top...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
MSRP: $424.95Now: $361.00Was: $424.95 -
On Sale
Wiseco 103ci Reverse Dome Piston Kit 2007-2016 Harley-Davidson FLHRS K2789
WISECO
MSRP: $524.95Now: $446.00Was: $524.95Experience enhanced performance and reliability with the WISECO Piston Kit K2789. Engineered with advanced manufacturing techniques, these pistons provide exceptional strength and reduced thermal expansion, ensuring optimal operation even under extreme...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
MSRP: $524.95Now: $446.00Was: $524.95 -
On Sale
Wiseco Piston Kit Standard High Compression 1978-1984 Harley-Davidson FLH K1623
WISECO
MSRP: $384.95Now: $327.00Was: $384.95Elevate your engine's performance with the WISECO High Compression Piston Kit, designed specifically for 1978-1984 Big Twin models. Crafted from a high-silicon aluminum alloy, this kit ensures exceptional strength and durability, making it ideal for both...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'
MSRP: $384.95Now: $327.00Was: $384.95 -
On Sale
Wiseco High Compression Piston Kit 1978-1984 Harley-Davidson FLH K1624
WISECO
MSRP: $384.95Now: $327.00Was: $384.95Elevate your engine's performance with the WISECO High Compression Piston Kit, expertly crafted from high-silicon aluminum alloy for exceptional strength and reliability. This comprehensive kit includes everything you need for a successful top-end...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
MSRP: $384.95Now: $327.00Was: $384.95 -
On Sale
Wiseco Piston Kit 1978-1984 Harley-Davidson FLH Electra Glide K1625
WISECO
MSRP: $384.95Now: $327.00Was: $384.95Enhance your motorcycle's performance with the WISECO High Compression Piston Kit, expertly crafted from high-silicon aluminum alloy for unmatched durability. This comprehensive kit includes everything you need for a successful top-end rebuild, ensuring...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
MSRP: $384.95Now: $327.00Was: $384.95Qty in Cart: 0Quantity:Price:MSRP: $384.95Now: $327.00Was: $384.95Subtotal: -
On Sale
Wiseco Piston Kit High Compression 1978-1984 Harley-Davidson FLH K1626
WISECO
MSRP: $384.95Now: $327.00Was: $384.95Experience enhanced performance and reliability with the WISECO High Compression Piston Kit, designed specifically for 1978-1984 Big Twin engines. Crafted from high-silicon aluminum alloy, this kit ensures maximum strength while providing all the...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
MSRP: $384.95Now: $327.00Was: $384.95
