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
S&S CYCLE Gaskets 3-5/8" (.062) 930-0097
S&S CYCLE
MSRP: $52.95Now: $48.71Was: $52.95A quality head gasket is non-negotiable for engine reliability and performance—it's your first line of defense against combustion pressure, coolant leaks, and catastrophic failure. The S&S CYCLE...09345011- SKU:
- 09345011
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- MICROPORE COMPOUND
- THICKNESS:
- 1,60 MM (0,062')
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 1.60 MM
- UNITS:
- PAIR
- BORE SIZE:
- 3,625'
- THICKNESS IMPERIAL:
- 0.062'
- BORE SIZE IMPERIAL:
- 3.625'
- TYPE:
- CYLINDER HEAD
MSRP: $52.95Now: $48.71Was: $52.95 -
On Sale
S&S CYCLE Gaskets - 4" - Evo - .043" 930-0087
S&S CYCLE
MSRP: $27.95Now: $25.71Was: $27.95A head gasket failure can sideline your engine and derail your season. S&S Cycle's 4" gaskets are engineered with aramid fiber-reinforced premium graphite and a stainless steel fire ring to handle...09345012- SKU:
- 09345012
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- TYPE:
- CYLINDER HEAD
- BORE SIZE:
- 4,000'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,09 MM (0,043')
- THICKNESS METRIC:
- 1.09 MM
- MATERIAL:
- MICROPORE COMPOUND
- THICKNESS IMPERIAL:
- 0,043'
- UNITS:
- PAIR
MSRP: $27.95Now: $25.71Was: $27.95 -
On Sale
S&S CYCLE Base Gaskets - 3.5" - V2 930-0092
S&S CYCLE
MSRP: $24.95Now: $22.95Was: $24.95Engine base gasket failure can compromise your entire bottom-end assembly, leading to oil leaks, pressure loss, and catastrophic damage during high-performance operation. The S&S Cycle Base Gaskets...09345018- SKU:
- 09345018
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,46 MM (0,018')
- UNITS:
- PAIR
- FEATURES:
- STOCK BOLT PATTERN
- THICKNESS IMPERIAL:
- 0,018'
- TYPE:
- CYLINDER BASE
- THICKNESS METRIC:
- 0.46 MM
MSRP: $24.95Now: $22.95Was: $24.95 -
On Sale
S&S CYCLE Piston Kit - Twin Cam 92-1200
S&S CYCLE
MSRP: $546.95Now: $503.19Was: $546.95If you're building or rebuilding a Twin Cam 92 engine, piston selection directly impacts compression ratio, engine response, and reliability. The S&S Cycle Piston Kit 92-1200 delivers...DS751306- SKU:
- DS751306
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 95'
- PISTON HEAD SHAPE:
- DOMED
- PISTON MATERIAL:
- FORGED
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4'
- BORE SIZE IMPERIAL:
- 3.875'
- TYPE:
- REPLACEMENT
MSRP: $546.95Now: $503.19Was: $546.95 -
On Sale
S&S CYCLE Base Gaskets - 4.125" - STK 930-0101
S&S CYCLE
MSRP: $25.95Now: $23.87Was: $25.95A blown base gasket can sideline your engine at the worst possible moment—mid-race or mid-build. S&S Cycle's base gaskets are engineered with their Pro-Formance micropore compound to withstand...09345020- SKU:
- 09345020
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- FEATURES:
- STOCK BOLT PATTERN
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,46 MM (0,018')
- THICKNESS IMPERIAL:
- 0,018'
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- THICKNESS METRIC:
- 0.46 MM
MSRP: $25.95Now: $23.87Was: $25.95 -
On Sale
S&S CYCLE Base Gaskets - 4.125" - SSW 930-0099
S&S CYCLE
MSRP: $17.95Now: $16.51Was: $17.95Base gasket failure can compromise your entire engine sealing system, leading to oil leaks and loss of compression at the worst possible moments. S&S Cycle's Pro-Formance micropore compound is...09345021- SKU:
- 09345021
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- FEATURES:
- S&S BOLT PATTERN
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,46 MM (0,018')
- THICKNESS IMPERIAL:
- 0,018'
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- THICKNESS METRIC:
- 0.46 MM
MSRP: $17.95Now: $16.51Was: $17.95 -
On Sale
S&S CYCLE Replacement Rings 94-1294X
S&S CYCLE
MSRP: $67.95Now: $62.51Was: $67.95When you're running a high-performance engine build, piston rings are the unsung workhorses that seal combustion, manage blow-by, and protect cylinder walls from premature wear. S&S Cycle replacement...DS751311- SKU:
- DS751311
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- PISTON SIZE IMPERIAL:
- +0.005'
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- UNITS:
- SET
MSRP: $67.95Now: $62.51Was: $67.95Qty in Cart: 0Quantity:Price:MSRP: $67.95Now: $62.51Was: $67.95Subtotal: -
On Sale
S&S CYCLE Top Rubber Washer 50-7015-12
S&S CYCLE
MSRP: $15.95Now: $14.67Was: $15.95Rocker box screw seals are critical wear items that prevent oil seepage and maintain proper gasket compression on your engine's top end. Over time, factory washers degrade from heat cycling and...09345030- SKU:
- 09345030
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER COVER
- UNITS:
- 10 PACK
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
MSRP: $15.95Now: $14.67Was: $15.95Qty in Cart: 0Quantity:Price:MSRP: $15.95Now: $14.67Was: $15.95Subtotal: -
On Sale
S&S CYCLE Cylinder - Evolution 91-7710
S&S CYCLE
MSRP: $840.95Now: $773.67Was: $840.95If your Evolution engine is showing signs of wear—loss of compression, scoring, or declining performance—a factory-quality cylinder replacement is the most direct path to restored power and...09310260- SKU:
- 09310260
- Availability:
- Ships Same Business Day
- Weight:
- 24.75 LBS
- TYPE:
- ENGINE
- BORE SIZE IMPERIAL:
- 3.500'
- DISPLACEMENT:
- 80'
- MATERIAL:
- ALUMINUM
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- STYLE:
- EVOLUTION
- COLOR/FINISH:
- HIGHLIGHTED FINS
- COLOR/FINISH:
- WRINKLE BLACK
- PRODUCT NAME:
- CYLINDER
MSRP: $840.95Now: $773.67Was: $840.95 -
On Sale
S&S CYCLE Cylinder Kit - Twin Cam 910-0205
S&S CYCLE
MSRP: $1,287.95Now: $1,184.91Was: $1,287.95If you're running stock cylinders on your Twin Cam and want to unlock genuine displacement gains without the machine shop headaches, this S&S big bore kit delivers a straightforward path to more...09310436- SKU:
- 09310436
- Availability:
- Ships Same Business Day
- Weight:
- 26.00 LBS
- BORE SIZE IMPERIAL:
- 3.927'
- COMPRESSION RATIO IMPERIAL:
- 9.7:1
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4'
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- DISPLACEMENT:
- 97'
- MATERIAL:
- ALUMINUM
- STYLE:
- BIG BORE
MSRP: $1,287.95Now: $1,184.91Was: $1,287.95 -
On Sale
S&S CYCLE Cylinder Kit - Twin Cam 910-0201
S&S CYCLE
MSRP: $1,219.95Now: $1,122.35Was: $1,219.95If you're running stock cylinders on your Twin Cam and hitting performance limits, the S&S CYCLE Big Bore kit delivers measurable displacement gains without the machine work or case splitting that...09310437- SKU:
- 09310437
- Availability:
- Ships Same Business Day
- Weight:
- 26.07 LBS
- BORE SIZE IMPERIAL:
- 3.927'
- COLOR/FINISH:
- SILVER
- DISPLACEMENT:
- 97'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 9.7:1
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4'
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $1,219.95Now: $1,122.35Was: $1,219.95 -
On Sale
S&S CYCLE Cylinder Kit - Twin Cam 910-0480
S&S CYCLE
MSRP: $1,345.95Now: $1,238.27Was: $1,345.95If you're running a Twin Cam engine and want measurable power gains without extensive machine work, the S&S CYCLE Big Bore kit delivers cubic inches and performance through a straightforward cylinder...09310535- SKU:
- 09310535
- Availability:
- Ships Same Business Day
- Weight:
- 25.32 LBS
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.9:1
- DISPLACEMENT:
- 107'
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- BORE SIZE IMPERIAL:
- 3.937'
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-3/8'
MSRP: $1,345.95Now: $1,238.27Was: $1,345.95 -
On Sale
S&S CYCLE E Manifold to Carburetor O-Ring 50-8094
S&S CYCLE
MSRP: $14.95Now: $13.75Was: $14.95A worn or damaged O-ring at the E Manifold-to-carburetor junction will cause vacuum leaks, rough idle, and fuel delivery inconsistencies that compromise your engine's tuning. This S&S Cycle...DS289935- SKU:
- DS289935
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 10 PACK
MSRP: $14.95Now: $13.75Was: $14.95Qty in Cart: 0Quantity:Price:MSRP: $14.95Now: $13.75Was: $14.95Subtotal: -
On Sale
S&S CYCLE Gaskets - 3-5/8" - Shovelhead 930-0089
S&S CYCLE
MSRP: $72.95Now: $67.11Was: $72.95A quality head gasket is the foundation of a reliable, high-compression engine. The S&S Cycle 3-5/8" gasket for Shovelhead applications combines premium materials with precision engineering to seal...09345017- SKU:
- 09345017
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE:
- 3,625'
- MATERIAL:
- COPPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.81 MM
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,81 MM (0,032')
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
MSRP: $72.95Now: $67.11Was: $72.95 -
On Sale
S&S CYCLE Base Gaskets - 3.625" - V2 930-0093
S&S CYCLE
MSRP: $16.95Now: $15.59Was: $16.95Base gasket failure can compromise your entire engine seal system, leading to oil leaks and catastrophic performance loss. S&S Cycle's Pro-Formance micropore compound is engineered to withstand...09345019- SKU:
- 09345019
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,46 MM (0,018')
- THICKNESS IMPERIAL:
- 0,018'
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 3.625'
- FEATURES:
- STOCK BOLT PATTERN
- THICKNESS METRIC:
- 0.46 MM
MSRP: $16.95Now: $15.59Was: $16.95 -
On Sale
S&S CYCLE CAM KIT 465C M8 17- 330-0620
S&S CYCLE
MSRP: $299.95Now: $275.95Was: $299.95The S&S Cycle 465C cam kit transforms your M8 engine's breathing and power delivery by advancing valve timing accuracy beyond what stock components can achieve. Gear-drive cams eliminate the slop...09251160- SKU:
- 09251160
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 218.9°
- INTAKE LIFT IMPERIAL:
- 0.462'
- EXHAUST DURATION IMPERIAL:
- 100.6° FRONT, 103.6° REAR
- PRODUCT NAME:
- CAM KIT
- TYPE:
- CHAIN
- EXHAUST LIFT IMPERIAL:
- 0.462'
- INTAKE CLOSE IMPERIAL:
- 14.6° FRONT, 14.4° REAR
- INTAKE OPEN IMPERIAL:
- 2.6° FRONT, 2.8° REAR
- UNITS:
- KIT
- EXHAUST OPEN IMPERIAL:
- 30.1° FRONT, 33.1° REAR
- INTAKE DURATION IMPERIAL:
- 197.2°
- RIDING STYLE:
- STREET
MSRP: $299.95Now: $275.95Was: $299.95 -
On Sale
S&S CYCLE Cam - H-Grind - Big Twin 330-0164
S&S CYCLE
MSRP: $255.95Now: $235.47Was: $255.95If you're restoring a vintage Big Twin or need to replace a worn hydraulic cam, the S&S CYCLE H-Grind is the only choice for authentic OEM-specification performance. This cam delivers precise front...09250738- SKU:
- 09250738
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- APPLICATION:
- INTAKE
- EXHAUST CLOSE IMPERIAL:
- 12°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.131'
- EXHAUST LIFT IMPERIAL:
- 0.389'
- EXHAUST OPEN IMPERIAL:
- 53°
- TYPE:
- GEAR
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
- INTAKE DURATION IMPERIAL:
- 233°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.076'
- EXHAUST DURATION IMPERIAL:
- 245°
- GRIND:
- H
- INTAKE CLOSE IMPERIAL:
- 40°
- PRODUCT NAME:
- CAM
- INTAKE LIFT IMPERIAL:
- 0.389'
- RIDING STYLE:
- STREET
MSRP: $255.95Now: $235.47Was: $255.95Qty in Cart: 0Quantity:Price:MSRP: $255.95Now: $235.47Was: $255.95Subtotal: -
On Sale
S&S CYCLE Cam - 551 Series - Gear Drive 330-0100
S&S CYCLE
MSRP: $948.95Now: $873.03Was: $948.95If you're running a touring bike and want measurable power gains without a complete engine rebuild, the S&S Cycle 551 Series Gear Drive delivers. By eliminating timing chain lash and reversing the...09250742- SKU:
- 09250742
- Availability:
- Ships Same Business Day
- Weight:
- 6.07 LBS
- EXHAUST OPEN IMPERIAL:
- 41°
- INTAKE LIFT IMPERIAL:
- 0.550'
- INTAKE LOBE CENTERLINE IMPERIAL:
- 91°
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 102°
- GRIND:
- 551 SERIES
- INTAKE CLOSE IMPERIAL:
- 19°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.178'
- EXHAUST CLOSE IMPERIAL:
- 17°
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.170'
- EXHAUST LIFT IMPERIAL:
- 0.550'
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 238°
- INTAKE DURATION IMPERIAL:
- 216°
- INTAKE OPEN IMPERIAL:
- 17°
- TYPE:
- GEAR
MSRP: $948.95Now: $873.03Was: $948.95 -
On Sale
S&S CYCLE Cylinder Kit 910-0204
S&S CYCLE
MSRP: $1,287.95Now: $1,184.91Was: $1,287.95If you're running stock cylinders on your S&S–equipped engine, you're leaving serious displacement and power on the table. The S&S CYCLE Big Bore Cylinder Kit 910-0204 delivers measurable gains in...09310432- SKU:
- 09310432
- Availability:
- Ships Same Business Day
- Weight:
- 26.30 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- DISPLACEMENT:
- 95'
- STYLE:
- BIG BORE
- COMPRESSION RATIO IMPERIAL:
- 9.7:1
- PRODUCT NAME:
- CYLINDER KIT
- STROKE LENGTH IMPERIAL:
- 4'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
MSRP: $1,287.95Now: $1,184.91Was: $1,287.95 -
On Sale
S&S CYCLE Rocker Box Gasket Kit 90-4049
S&S CYCLE
MSRP: $91.95Now: $84.59Was: $91.95Rocker box gaskets and O-rings deteriorate over time, leading to oil seepage, contamination, and potential engine damage. This complete S&S Cycle gasket kit eliminates guesswork by providing all...DS174301- SKU:
- DS174301
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- FEATURES:
- 4-BOLT STYLE
- TYPE:
- ROCKER BOX
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- FEATURES:
- FOR '84 - '99 EVOLUTION-STYLE BIG TWIN
- PRODUCT NAME:
- GASKET KIT
MSRP: $91.95Now: $84.59Was: $91.95
