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
Jims Piston Oiling Jet Kit for Harley-Davidson Twin Cam 1999-2017 1905
JIMS
MSRP: $235.25Now: $211.73Was: $235.25Stroker flywheels demand precision oiling to survive sustained high-RPM operation—stock oil jets simply can't deliver the volume needed for proper piston cooling and bearing protection. The JIMS...09200050- SKU:
- 09200050
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- STREET
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- SILVER
- TYPE:
- OILING
- UNITS:
- KIT
- PRODUCT NAME:
- JET KIT
MSRP: $235.25Now: $211.73Was: $235.25 -
On Sale
Jims Cam Cover Small O-Ring 1993-1999 Harley-Davidson FLSTC FLSTF FLSTN FLSTS FXD FXDL FXDWG FXSTC FXSTS FXSTSB 2170
JIMS
MSRP: $5.45Now: $4.91Was: $5.45Cam cover o-rings are a critical maintenance item that directly impacts engine sealing integrity and longevity. A deteriorated or worn o-ring allows oil seepage, which compromises engine cleanliness...DS376547- SKU:
- DS376547
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- SIZE:
- SMALL
- MATERIAL:
- RUBBER
- UNITS:
- EACH
- TYPE:
- TWIN CAM
MSRP: $5.45Now: $4.91Was: $5.45 -
On Sale
Jims Hydrosolid Tappet 1800 for Harley-Davidson 1984-1999 Big Twin and 1986-1990 Sportster
JIMS
MSRP: $163.05Now: $146.75Was: $163.05If you're pushing your Big Twin or Sportster beyond stock limits, you need valve train components that can handle sustained high-RPM operation without sacrificing low-end response. The JIMS...DS194342- SKU:
- DS194342
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- RIDING STYLE:
- STREET
- STYLE:
- HYDRAULIC
- PRODUCT NAME:
- TAPPET
- UNITS:
- EACH
- DIAMETER IMPERIAL:
- 0.8425'
- MODEL:
- HYDROSOLID
MSRP: $163.05Now: $146.75Was: $163.05 -
On Sale
Jims Hydraulic Tappet for 1953-1984 Harley-Davidson Big Twin 2459-1
JIMS
MSRP: $172.45Now: $155.21Was: $172.45Hydraulic tappet wear is one of the most common failure points in Big Twin engines, leading to increased valve train noise, poor cam timing, and accelerated component degradation. The JIMS 2459-1...DS194271- SKU:
- DS194271
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- DIAMETER IMPERIAL:
- 0.7310'
- RIDING STYLE:
- STREET
- SIZE:
- STANDARD
- PRODUCT NAME:
- TAPPET
- UNITS:
- EACH
- MODEL:
- POWERGLIDE SERIES
- SIZE IMPERIAL:
- STANDARD
- MATERIAL:
- STEEL
- STYLE:
- HYDRAULIC
MSRP: $172.45Now: $155.21Was: $172.45 -
On Sale
Jims Standard Solid Tappet for 1948-1984 Harley-Davidson Big Twin 2474-1
JIMS
MSRP: $140.95Now: $126.86Was: $140.95Proper tappet clearance is critical to cam longevity and reliable power delivery in Big Twin engines—and that's where JIMS solid tappets earn their reputation. These precision-machined components...DS194272- SKU:
- DS194272
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- DIAMETER IMPERIAL:
- 0.7310'
- SIZE:
- STANDARD
- MODEL:
- POWERGLIDE SERIES
- PRODUCT NAME:
- TAPPET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- STANDARD
- STYLE:
- STANDARD SOLID
MSRP: $140.95Now: $126.86Was: $140.95Qty in Cart: 0Quantity:Price:MSRP: $140.95Now: $126.86Was: $140.95Subtotal: -
On Sale
Jims Standard Solid Tappet Big Twin 1948-1984 2476-1
JIMS
MSRP: $144.85Now: $130.37Was: $144.85Proper tappet clearance is critical to cam longevity and reliable valve timing—and factory tolerances often leave room for improvement. JIMS Standard Solid Tappets deliver precision-engineered...DS194273- SKU:
- DS194273
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- SIZE IMPERIAL:
- OVERSIZE (+0.005')
- STYLE:
- STANDARD SOLID
- DIAMETER IMPERIAL:
- 0.7360'
- MODEL:
- POWERGLIDE SERIES
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- SIZE:
- OVERSIZE (+0,005')
- MATERIAL:
- STEEL
- PRODUCT NAME:
- TAPPET
MSRP: $144.85Now: $130.37Was: $144.85Qty in Cart: 0Quantity:Price:MSRP: $144.85Now: $130.37Was: $144.85Subtotal: -
On Sale
JIMS Tappet Oversize +.005 for 1972-1985 Harley-Davidson Sportster XLH XLCH XLX 2473-1
JIMS
MSRP: $142.35Now: $128.12Was: $142.35If you're running a high-RPM Sportster engine, your factory tappets are likely introducing harmonic distortion that's costing you efficiency and precision. The JIMS Tappet +.005 XL is engineered to...DS194277- SKU:
- DS194277
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- TAPPET
- RIDING STYLE:
- STREET
- SIZE:
- OVERSIZE (+0,005')
- STYLE:
- SOLID
- SIZE IMPERIAL:
- OVERSIZE (+0.005')
- UNITS:
- EACH
MSRP: $142.35Now: $128.12Was: $142.35 -
On Sale
Jims Standard Hydraulic Tappet for Harley-Davidson 1966-1980 Electra Glide FLH 2462-1
JIMS
MSRP: $116.80Now: $105.12Was: $116.80Hydraulic tappet wear is one of the fastest ways to lose cam timing precision and overall engine reliability in your Big Twin. The JIMS Standard Hydraulic Tappet 2462-1 delivers hand-fitted accuracy...DS194369- SKU:
- DS194369
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- TAPPET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- DIAMETER IMPERIAL:
- 0.7310'
- RIDING STYLE:
- STREET
- SIZE:
- STANDARD
- STYLE:
- STANDARD HYDRAULIC
- MODEL:
- POWERGLIDE SERIES
- SIZE IMPERIAL:
- STANDARD
MSRP: $116.80Now: $105.12Was: $116.80Qty in Cart: 0Quantity:Price:MSRP: $116.80Now: $105.12Was: $116.80Subtotal: -
On Sale
Jims Standard Hydraulic Tappet 1966-1984 Harley-Davidson Electra Glide FLH 2463-1
JIMS
MSRP: $120.50Now: $108.45Was: $120.50Hydraulic tappet wear directly impacts cam timing accuracy and overall engine reliability—especially critical in high-mileage Big Twin engines where factory tolerances have loosened. The JIMS...DS194370- SKU:
- DS194370
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- DIAMETER IMPERIAL:
- 0.7330'
- MODEL:
- POWERGLIDE SERIES
- SIZE IMPERIAL:
- OVERSIZE (+0.002')
- RIDING STYLE:
- STREET
- SIZE:
- OVERSIZE (+0,002')
- MATERIAL:
- STEEL
- UNITS:
- EACH
- PRODUCT NAME:
- TAPPET
- STYLE:
- STANDARD HYDRAULIC
MSRP: $120.50Now: $108.45Was: $120.50 -
On Sale
Jims Standard Hydraulic Tappet 1953-1984 Harley-Davidson Big Twin 2464-1
JIMS
MSRP: $120.50Now: $108.45Was: $120.50Precision hydraulic tappets are the foundation of reliable valve timing and extended engine life on your Big Twin. JIMS Standard Hydraulic Tappets deliver the tight tolerances and durable...DS194371- SKU:
- DS194371
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- DIAMETER IMPERIAL:
- 0.7360'
- MODEL:
- POWERGLIDE SERIES
- SIZE:
- OVERSIZE (+0,005')
- PRODUCT NAME:
- TAPPET
- STYLE:
- STANDARD HYDRAULIC
- MATERIAL:
- STEEL
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- OVERSIZE (+0.005')
- UNITS:
- EACH
MSRP: $120.50Now: $108.45Was: $120.50 -
On Sale
Jims Standard Solid Tappet Big Twin 1948-1984 2475-1
JIMS
MSRP: $144.85Now: $130.37Was: $144.85Solid tappets are fundamental to maintaining precise cam timing and valve train reliability in your Big Twin engine. The JIMS Standard Solid Tappet delivers the clearance accuracy and material...DS194373- SKU:
- DS194373
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MODEL:
- POWERGLIDE SERIES
- PRODUCT NAME:
- TAPPET
- MATERIAL:
- STEEL
- SIZE:
- OVERSIZE (+0,002')
- DIAMETER IMPERIAL:
- 0.7330'
- RIDING STYLE:
- STREET
- SIZE IMPERIAL:
- OVERSIZE (+0.002')
- STYLE:
- STANDARD SOLID
- UNITS:
- EACH
MSRP: $144.85Now: $130.37Was: $144.85 -
On Sale
Jims Pinion Gear Shaft 1958-1972 Harley-Davidson FLH 24006-58
JIMS
MSRP: $160.50Now: $144.45Was: $160.50A worn or damaged pinion gear shaft compromises power delivery and can lead to catastrophic drivetrain failure. The JIMS 24006-58 restores precise meshing between primary and transmission gears,...DS194086- SKU:
- DS194086
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- GEAR
- TYPE:
- PINION SHAFT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $160.50Now: $144.45Was: $160.50Qty in Cart: 0Quantity:Price:MSRP: $160.50Now: $144.45Was: $160.50Subtotal: -
On Sale
Jims Pinion Shaft 1973-1981 Harley-Davidson FLH 24006-73
JIMS
MSRP: $160.50Now: $144.45Was: $160.50The pinion shaft is the critical link between your primary drive and transmission—any wear or damage here directly impacts power delivery and reliability. JIMS' 24006-73 is precision-engineered to...DS194087- SKU:
- DS194087
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- GEAR
- TYPE:
- PINION SHAFT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $160.50Now: $144.45Was: $160.50 -
On Sale
JIMS Roller Rocker Arms 1984-2017 Harley-Davidson Big Twin XL 1045RR
JIMS
MSRP: $959.85Now: $863.87Was: $959.85When you're pushing your Big Twin or XL to the edge, stock rocker arms become your bottleneck. JIMS Roller Rocker Arms deliver the lightweight efficiency and wear resistance you need to maximize...DS193850- SKU:
- DS193850
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- MATERIAL:
- STEEL
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- TYPE:
- ROLLER
- UNITS:
- SET OF 4
MSRP: $959.85Now: $863.87Was: $959.85 -
On Sale
Jims Circuit Breaker Shaft Kit 1936-1969 Big Twin 25856-KIT
JIMS
MSRP: $59.70Now: $53.73Was: $59.70The Circuit Breaker shaft is critical to your Big Twin's ignition system reliability—a worn or damaged shaft leads to timing issues, misfires, and reduced engine performance. This JIMS kit delivers a...DS194234- SKU:
- DS194234
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CIRCUIT BREAKER
- PRODUCT NAME:
- SHAFT KIT
- UNITS:
- EACH
MSRP: $59.70Now: $53.73Was: $59.70 -
On Sale
Jims Engine Sprocket Shaft for Harley-Davidson Big Twin 1981-1985 23909-80
JIMS
MSRP: $169.45Now: $152.51Was: $169.45The JIMS Sprocket Shaft is a critical drivetrain component that directly impacts torque delivery and chain longevity on your Big Twin. Factory shafts wear over time, leading to slack in the primary...DS194190- SKU:
- DS194190
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- SPROCKET SHAFT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $169.45Now: $152.51Was: $169.45Qty in Cart: 0Quantity:Price:MSRP: $169.45Now: $152.51Was: $169.45Subtotal: -
On Sale
Jims Pinion Gear Shaft for 1981-1986 Harley-Davidson Big Twin 24006-80/83
JIMS
MSRP: $160.50Now: $144.45Was: $160.50A worn or damaged pinion gear shaft compromises your Big Twin's primary drive efficiency and can lead to costly engine damage down the line. The JIMS Pinion Gear Shaft restores precise engagement...DS194191- SKU:
- DS194191
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- PRODUCT NAME:
- GEAR
- TYPE:
- PINION SHAFT
- UNITS:
- EACH
- RIDING STYLE:
- STREET
MSRP: $160.50Now: $144.45Was: $160.50 -
On Sale
Jims Rocker Arm Shaft 1966-1984 Big Twin 17611-66B
JIMS
MSRP: $111.40Now: $100.26Was: $111.40A worn or inferior rocker arm shaft compromises valve train efficiency and accelerates component degradation in your Big Twin—leading to lost performance and costly rebuilds. The JIMS Rocker Arm...DS193819- SKU:
- DS193819
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- PRODUCT NAME:
- SHAFT
- TYPE:
- ROCKER ARM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $111.40Now: $100.26Was: $111.40 -
On Sale
Jims Rocker Arm Bushings for Harley-Davidson FLH 1970-1984 17428-57K
JIMS
MSRP: $83.95Now: $75.56Was: $83.95Worn rocker arm bushings compromise valve train accuracy and accelerate engine wear—particularly critical in high-mileage Big Twin and XL engines where lateral play directly impacts performance and...DS193821- SKU:
- DS193821
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- BUSHING
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER ARM
- UNITS:
- 8 PACK
MSRP: $83.95Now: $75.56Was: $83.95 -
On Sale
JIMS Crank Pin for Harley-Davidson Big Twin 1941-1981 23961-413
JIMS
MSRP: $141.80Now: $127.62Was: $141.80A worn or damaged crank pin compromises your Big Twin's reliability and performance—this JIMS replacement ensures your engine maintains precise pin specifications for consistent power delivery and...DS194004- SKU:
- DS194004
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- CRANKPIN
- BASE COLOR:
- SILVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- 3 HOLE
MSRP: $141.80Now: $127.62Was: $141.80Qty in Cart: 0Quantity:Price:MSRP: $141.80Now: $127.62Was: $141.80Subtotal:
