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
-
DRAG SPECIALTIES Pushrod Tube Kit - Black - Twin Cam 76520B
DRAG SPECIALTIES
$135.63Pushrod tube integrity is critical to maintaining proper valve train geometry and oil delivery in your Twin Cam engine. Over time, stock tubes wear, crack, or bend—causing valve timing issues and...09280043- SKU:
- 09280043
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD
- PRODUCT NAME:
- TUBE KIT
$135.63Qty in Cart: 0Quantity:Price:$135.63Subtotal: -
DRAG SPECIALTIES HV/HP Oil Pump - Twin Cam 86630
DRAG SPECIALTIES
$197.11High-RPM operation demands oil system reliability that stock pumps simply can't deliver. The Drag Specialties HV/HP Oil Pump addresses carryover issues and thermal management that plague...09320087- SKU:
- 09320087
- Availability:
- Ships Same Business Day
- Weight:
- 1.43 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- FLOW RATE:
- HIGH VOLUME
- PRODUCT NAME:
- PUMP
- MATERIAL:
- STEEL
- UNITS:
- EACH
$197.11Qty in Cart: 0Quantity:Price:$197.11Subtotal: -
DRAG SPECIALTIES HV/HP Oil Pump - Twin Cam 86631
DRAG SPECIALTIES
$197.11High-RPM operation demands an oil pump engineered to handle extreme conditions—stock pumps simply can't manage the heat and pressure spikes that dedicated performance builds generate. The Drag...09320088- SKU:
- 09320088
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- MATERIAL:
- STEEL
- FLOW RATE:
- HIGH VOLUME
- UNITS:
- EACH
- PRODUCT NAME:
- PUMP
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$197.11Qty in Cart: 0Quantity:Price:$197.11Subtotal: -
DRAG SPECIALTIES Isolator Mount - Rear - XL E28-0032
DRAG SPECIALTIES
$33.87Engine vibration and drivetrain noise degrade both performance feel and structural integrity over time. This OEM-specification isolator mount absorbs and decouples rear-end harmonics, preserving...09330055- SKU:
- 09330055
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- MOUNT
- BASE COLOR:
- BLACK
- TYPE:
- ISOLATOR
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
$33.87 -
DRAG SPECIALTIES Peaked Design Oil Dipstick - Dyna 63187G
DRAG SPECIALTIES
$61.43An accurate oil level reading is critical to engine longevity, and a worn or damaged dipstick can leave you guessing about your oil condition. The DRAG Specialties Peaked Design Oil Dipstick restores...07100153- SKU:
- 07100153
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- COLOR/FINISH:
- CHROME
- TYPE:
- SWIVEL
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- OIL DIPSTICK
$61.43Qty in Cart: 0Quantity:Price:$61.43Subtotal: -
DRAG SPECIALTIES Oil Line Kit - Stainless Steel - Softail 606000
DRAG SPECIALTIES
$167.43OEM oil lines degrade over time, leading to leaks, pressure loss, and potential engine damage. This Drag Specialties stainless steel kit replaces worn lines with direct OEM-equivalent replacements,...07110034- SKU:
- 07110034
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- LINE
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- FEATURES:
- 4-LINE KIT
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- BRAIDED
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$167.43Qty in Cart: 0Quantity:Price:$167.43Subtotal: -
DRAG SPECIALTIES Oil Line Kit - Stainless Steel - Sportster 606009
DRAG SPECIALTIES
$130.33Factory oil lines deteriorate over time, compromising system integrity and risking leaks that can damage your engine or leave you stranded at the track. This direct-replacement kit restores your...07110041- SKU:
- 07110041
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- MATERIAL:
- STAINLESS STEEL
- FEATURES:
- 3-LINE KIT
- STYLE:
- BRAIDED
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- LINE
$130.33Qty in Cart: 0Quantity:Price:$130.33Subtotal: -
DRAG SPECIALTIES Oil Line with Fittings - Stainless Steel - 15" 615
DRAG SPECIALTIES
$33.87Reliable oil delivery is non-negotiable in high-performance applications, and substandard lines compromise both engine health and lap times. The DRAG SPECIALTIES Stainless Steel Oil Line eliminates...07110050- SKU:
- 07110050
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- LENGTH IMPERIAL:
- 15'
- STYLE:
- BRAIDED
- INSIDE DIAMETER IMPERIAL:
- 11/32'
- PRODUCT NAME:
- LINE
- STYLE:
- UNIVERSAL
- COLOR/FINISH:
- CHROME
- FITTING CONNECTOR TYPE:
- 1/8' NPT
- INSIDE DIAMETER METRIC:
- 8.7 MM
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- LENGTH METRIC:
- 38 CM
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$33.87Qty in Cart: 0Quantity:Price:$33.87Subtotal: -
DRAG SPECIALTIES Oil Tank Plug - Chrome 63126A
DRAG SPECIALTIES
$27.51A quality oil tank plug isn't just a cap—it's essential maintenance infrastructure that prevents contamination, oil loss, and costly engine damage. This DRAG Specialties unit combines a functional...07100089- SKU:
- 07100089
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- BASE FINISH:
- CHROME
- TYPE:
- SWIVEL DIPSTICK
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- PLUG
- RIDING STYLE:
- STREET
- STYLE:
- PUSH-IN
- UNITS:
- EACH
$27.51Qty in Cart: 0Quantity:Price:$27.51Subtotal: -
On Sale
COMETIC Top End Gasket - 4" - S&S C9917
COMETIC
MSRP: $142.75Now: $128.48Was: $142.75A quality top-end gasket kit is non-negotiable for maintaining combustion integrity and preventing coolant or oil seepage in high-performance engines. Cometic's EST gasket design uses embossed...09340767- SKU:
- 09340767
- Availability:
- Ships Same Business Day
- Weight:
- 0.93 LBS
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- BORE SIZE:
- 4,000'
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
MSRP: $142.75Now: $128.48Was: $142.75Qty in Cart: 0Quantity:Price:MSRP: $142.75Now: $128.48Was: $142.75Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-1302X
S&S CYCLE
MSRP: $65.95Now: $60.67Was: $65.95Maintaining proper ring seal is critical for engine compression, oil control, and longevity—especially in high-performance applications where blow-by and excessive wear can quickly degrade power...941302- SKU:
- 941302
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PISTON SIZE IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
MSRP: $65.95Now: $60.67Was: $65.95Qty in Cart: 0Quantity:Price:MSRP: $65.95Now: $60.67Was: $65.95Subtotal: -
On Sale
S&S CYCLE Oil Pump Relief Spring 31-6018
S&S CYCLE
MSRP: $6.95Now: $6.39Was: $6.95If you're running a high-performance engine, oil pressure is the difference between a long-lived powerplant and catastrophic bearing failure. The S&S Cycle Oil Pump Relief Spring increases your...09320104- SKU:
- 09320104
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- STEEL
- UNITS:
- EACH
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- BASE COLOR:
- BLACK
- TYPE:
- PRESSURE RELEASE
MSRP: $6.95Now: $6.39Was: $6.95 -
On Sale
S&S CYCLE Cylinder Kit - M8 910-0681
S&S CYCLE
MSRP: $1,561.95Now: $1,436.99Was: $1,561.95The S&S Cycle M8 910-0681 Big Bore kit delivers straightforward displacement increases without the complexity of case splitting or cylinder boring. If you're running stock M8 heads and want...09310833- SKU:
- 09310833
- Availability:
- Ships Same Business Day
- Weight:
- 13.50 LBS
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 124'
- MATERIAL:
- IRON
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE SIZE IMPERIAL:
- 4.250'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $1,561.95Now: $1,436.99Was: $1,561.95Qty in Cart: 0Quantity:Price:MSRP: $1,561.95Now: $1,436.99Was: $1,561.95Subtotal: -
On Sale
S&S CYCLE Cylinder Kit 910-0691
S&S CYCLE
MSRP: $1,008.95Now: $928.23Was: $1,008.95If you're serious about maximizing displacement and compression on your Harley-Davidson, the S&S Cycle 1250cc Cylinder Kit (910-0691) delivers the cubic inches and flow characteristics you need...09310526- SKU:
- 09310526
- Availability:
- Ships Same Business Day
- Weight:
- 22.71 LBS
- BORE SIZE IMPERIAL:
- 3.562'
- COMPRESSION RATIO IMPERIAL:
- 10.3:1
- DISPLACEMENT:
- 1250 CC
- UNITS:
- KIT
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- STYLE:
- BIG BORE
- TYPE:
- FLAT TOP
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- MATERIAL:
- IRON
MSRP: $1,008.95Now: $928.23Was: $1,008.95 -
On Sale
S&S CYCLE Cylinder Heads - Twin Cam 106-3255
S&S CYCLE
MSRP: $1,995.95Now: $1,836.27Was: $1,995.95S&S Cycle cylinder heads unlock significant performance gains on Twin Cam engines while preserving upgrade flexibility for future modifications. These fully assembled heads deliver improved port flow...09300065- SKU:
- 09300065
- Availability:
- Ships Same Business Day
- Weight:
- 28.65 LBS
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SUPER STOCK
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- DISPLACEMENT:
- 89 CC
- COLOR/FINISH:
- SILVER
- PRODUCT NAME:
- CYLINDER HEAD KIT
MSRP: $1,995.95Now: $1,836.27Was: $1,995.95Qty in Cart: 0Quantity:Price:MSRP: $1,995.95Now: $1,836.27Was: $1,995.95Subtotal: -
On Sale
S&S CYCLE Cylinder Head Kit 90-1488
S&S CYCLE
MSRP: $1,886.95Now: $1,735.99Was: $1,886.95The S&S CYCLE Cylinder Head Kit 90-1488 delivers a complete, ready-to-install solution that eliminates the guesswork of sourcing individual components. Pre-assembled with precision valve seats,...09300133- SKU:
- 09300133
- Availability:
- Ships Same Business Day
- Weight:
- 24.24 LBS
- FEATURES:
- DUAL SPARK PLUG
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- STYLE:
- STOCK COMPRESSION
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ALUMINUM
- MATERIAL:
- IRON
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.625'
- MATERIAL:
- CAST
MSRP: $1,886.95Now: $1,735.99Was: $1,886.95Qty in Cart: 0Quantity:Price:MSRP: $1,886.95Now: $1,735.99Was: $1,886.95Subtotal: -
On Sale
S&S CYCLE Lower End Gasket Kit 31-2067
S&S CYCLE
MSRP: $52.95Now: $48.71Was: $52.95A compromised lower end gasket kit invites oil leaks, contamination, and catastrophic engine failure—especially in high-performance applications where precision matters. The S&S Cycle Lower End...312067- SKU:
- 312067
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- TYPE:
- LOWER END
MSRP: $52.95Now: $48.71Was: $52.95Qty in Cart: 0Quantity:Price:MSRP: $52.95Now: $48.71Was: $52.95Subtotal: -
On Sale
S&S CYCLE Gaskets - 4" - .045 - STL 900-0822
S&S CYCLE
MSRP: $91.95Now: $84.59Was: $91.95A quality head gasket is fundamental to engine reliability and performance—it's the critical seal that prevents combustion blow-by and coolant cross-contamination. S&S Cycle's gaskets use aramid...09346418- SKU:
- 09346418
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,14 MM (0,045')
- THICKNESS IMPERIAL:
- 0.045'
- TYPE:
- CYLINDER HEAD
- BORE SIZE:
- 4'
- PRODUCT NAME:
- GASKET
- BORE SIZE IMPERIAL:
- 4'
- MATERIAL:
- LAYERED STEEL
- THICKNESS METRIC:
- 1.14 MM
MSRP: $91.95Now: $84.59Was: $91.95Qty in Cart: 0Quantity:Price:MSRP: $91.95Now: $84.59Was: $91.95Subtotal: -
On Sale
S&S CYCLE Piston Kit 106-0434
S&S CYCLE
MSRP: $467.95Now: $430.51Was: $467.95If you're running a Big Twin and want measurable power gains without an engine swap, displacement increase is one of the most cost-effective paths forward. The S&S CYCLE 1250cc piston kit transforms...09105022- SKU:
- 09105022
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- DISPLACEMENT:
- 103'
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- +0,010'
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- PISTON HEAD SHAPE:
- FLAT TOP
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- TYPE:
- REPLACEMENT
MSRP: $467.95Now: $430.51Was: $467.95Qty in Cart: 0Quantity:Price:MSRP: $467.95Now: $430.51Was: $467.95Subtotal: -
On Sale
S&S CYCLE V111 Long-Block Engine - Evolution 310-0766
S&S CYCLE
MSRP: $7,999.95Now: $7,359.95Was: $7,999.95The S&S Cycle V111 long-block engine delivers a substantial 30% increase in horsepower and torque over stock specifications, giving your Evolution-platform motorcycle the performance edge you've been...09010197- SKU:
- 09010197
- Availability:
- Ships Same Business Day
- Weight:
- 149.00 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- WRINKLE
- COOLING SYSTEM:
- AIR COOLED
- DISPLACEMENT:
- 111'
- MODEL:
- V-SERIES
- PRODUCT NAME:
- ENGINE
- RIDING STYLE:
- STREET
- TYPE:
- LONG BLOCK
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 9.8:1
- STROKE LENGTH IMPERIAL:
- 4-1/8'
MSRP: $7,999.95Now: $7,359.95Was: $7,999.95
