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 Easy Start Cam Kit 106-5302
S&S CYCLE
MSRP: $540.95Now: $486.86Was: $540.95Cold starts on high-compression big-twin engines can drain your battery and punish your starter motor—the S&S Easy Start Cam Kit solves this by temporarily reducing cranking compression until the...09250525- SKU:
- 09250525
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.184'
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- TYPE:
- CHAIN
- APPLICATION:
- EXHAUST
- EXHAUST DURATION IMPERIAL:
- 260°
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 110°
- EXHAUST OPEN IMPERIAL:
- 60°
- FEATURES:
- INCLUDES INSTALLATION KIT
- INTAKE LIFT AT TDC IMPERIAL:
- 0.189'
- MODEL:
- EASY START
- EXHAUST CLOSE IMPERIAL:
- 20°
- EXHAUST LIFT IMPERIAL:
- 0.625'
- INTAKE CLOSE IMPERIAL:
- 55°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 107.5°
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- GRIND:
- 625 SERIES
- INTAKE DURATION IMPERIAL:
- 255°
- INTAKE LIFT IMPERIAL:
- 0.625'
- INTAKE OPEN IMPERIAL:
- 20°
MSRP: $540.95Now: $486.86Was: $540.95 -
On Sale
S&S CYCLE Replacement Silicone Solenoid Caps 50-1080
S&S CYCLE
MSRP: $12.95Now: $11.66Was: $12.95S&S electronic and manual compression release kits rely on precision-engineered solenoid caps to maintain reliable ignition timing and engine performance. Over time, silicone caps degrade from heat...09300041- SKU:
- 09300041
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- WHITE
- PRODUCT NAME:
- CAP
- MATERIAL:
- SILICONE
- TYPE:
- COMPRESSION RELEASE
- UNITS:
- PAIR
MSRP: $12.95Now: $11.66Was: $12.95 -
On Sale
S&S CYCLE Oil Filter - Black 31-4103A
S&S CYCLE
MSRP: $20.95Now: $18.86Was: $20.95Stock oil filters leave your engine vulnerable to contaminant bypass, especially under demanding riding conditions. The S&S Cycle Oil Filter improves filtration efficiency while maintaining the same...07120540- SKU:
- 07120540
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- BASE COLOR:
- BLACK
- FEATURES:
- ANTI-DRAIN BACK VALVE
- TYPE:
- CANISTER
- MATERIAL:
- STEEL
- PRODUCT NAME:
- OIL FILTER
MSRP: $20.95Now: $18.86Was: $20.95 -
On Sale
S&S CYCLE Adjustable Pushrods - Twin Cam 93-5096
S&S CYCLE
MSRP: $152.95Now: $137.66Was: $152.95Valve train geometry directly impacts combustion efficiency and power delivery, making pushrod length critical for any serious Twin Cam build. S&S Cycle's adjustable pushrods eliminate guesswork by...DS199241- SKU:
- DS199241
- Availability:
- Ships Same Business Day
- Weight:
- 0.94 LBS
- PRODUCT NAME:
- PUSHROD SET
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
- STYLE:
- ADJUSTABLE
- MATERIAL:
- CHROMOLY STEEL
MSRP: $152.95Now: $137.66Was: $152.95Qty in Cart: 0Quantity:Price:MSRP: $152.95Now: $137.66Was: $152.95Subtotal: -
On Sale
S&S CYCLE Cylinder Head Kit - Big Twin 90-1497
S&S CYCLE
MSRP: $1,895.95Now: $1,706.36Was: $1,895.95A quality cylinder head kit is fundamental to unlocking your Big Twin's full potential—whether you're building a stroker, upgrading an aging engine, or restoring a classic. The S&S Cycle 90-1497...09300017- SKU:
- 09300017
- Availability:
- Ships Same Business Day
- Weight:
- 25.55 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- FEATURES:
- SINGLE SPARK PLUG
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- STYLE:
- STOCK COMPRESSION
- UNITS:
- KIT
- COLOR/FINISH:
- ALUMINUM
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $1,895.95Now: $1,706.36Was: $1,895.95 -
On Sale
S&S CYCLE Super Stock Motor Case 31-0010
S&S CYCLE
MSRP: $2,195.95Now: $1,976.36Was: $2,195.95The S&S Cycle Super Stock Motor Case is the foundation of a reliable, high-output Harley engine build. This A356 T-6 aluminum casting delivers the precision machining and bearing support you need for...310010- SKU:
- 310010
- Availability:
- Ships Same Business Day
- Weight:
- 33.30 LBS
- TYPE:
- GENERATOR
- UNITS:
- KIT
- MODEL:
- SUPER STOCK®
- PRODUCT NAME:
- ENGINE CASE
- RIDING STYLE:
- STREET
- MATERIAL:
- A356 T-6 ALUMINUM ALLOY
- COLOR/FINISH:
- NATURAL
MSRP: $2,195.95Now: $1,976.36Was: $2,195.95 -
On Sale
S&S CYCLE Roller Rocker Arms 900-4065A
S&S CYCLE
MSRP: $649.95Now: $584.96Was: $649.95If you're serious about maximizing valve train efficiency and extending engine durability on your Harley-Davidson XL or Buell, S&S Cycle roller rocker arms are a proven upgrade. The extended .75"...09270015- SKU:
- 09270015
- Availability:
- Ships Same Business Day
- Weight:
- 2.61 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- FORGED
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- UNITS:
- SET OF 4
- APPLICATION:
- EXHAUST
- MATERIAL:
- 8620 STEEL
- MOUNTING POSITION:
- FRONT
MSRP: $649.95Now: $584.96Was: $649.95 -
On Sale
S&S CYCLE Cylinder Kit - Twin Cam 910-0481
S&S CYCLE
MSRP: $1,386.95Now: $1,248.26Was: $1,386.95If you're looking to unlock genuine performance gains from your Twin Cam engine without the complexity of case-splitting or cylinder boring, the S&S CYCLE Big Bore Kit delivers a straightforward path...09310536- SKU:
- 09310536
- Availability:
- Ships Same Business Day
- Weight:
- 25.48 LBS
- DISPLACEMENT:
- 98'
- UNITS:
- KIT
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4'
- STYLE:
- BIG BORE
- BORE SIZE IMPERIAL:
- 3.937'
- COLOR/FINISH:
- BLACK
- MATERIAL:
- ALUMINUM
- COMPRESSION RATIO IMPERIAL:
- 9.8:1
MSRP: $1,386.95Now: $1,248.26Was: $1,386.95 -
On Sale
S&S CYCLE Gasket Bowl - E/G 11-2386
S&S CYCLE
MSRP: $8.95Now: $8.06Was: $8.95A worn or damaged gasket bowl compromises your engine's sealing integrity, leading to oil leaks, contamination, and potential performance loss. The S&S Cycle Gasket Bowl ensures a precise, reliable...09345028- SKU:
- 09345028
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- STYLE:
- SUPER E
- STYLE:
- SUPER G
- UNITS:
- EACH
- TYPE:
- FLOAT BOWL
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
MSRP: $8.95Now: $8.06Was: $8.95 -
On Sale
S&S CYCLE Cam with Plate - 509 Series 330-0540
S&S CYCLE
MSRP: $1,924.95Now: $1,732.46Was: $1,924.95Stock cam chains wear over time, leading to timing drift and potential catastrophic engine failure. The S&S 509 Series cam upgrade replaces your entire valve-train system with precision-engineered, U...09251105- SKU:
- 09251105
- Availability:
- Ships Same Business Day
- Weight:
- 11.05 LBS
- EXHAUST CLOSE IMPERIAL:
- 11°
- EXHAUST DURATION IMPERIAL:
- 237°
- EXHAUST LIFT IMPERIAL:
- 0.509'
- INTAKE OPEN IMPERIAL:
- 18°
- MODEL:
- STANDARD
- RIDING STYLE:
- STREET
- INTAKE LIFT IMPERIAL:
- 0.509'
- PRODUCT NAME:
- CAMSHAFT
- TYPE:
- CHAIN
- INTAKE DURATION IMPERIAL:
- 216°
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- EXHAUST OPEN IMPERIAL:
- 46°
- GRIND:
- 509 SERIES
- INTAKE CLOSE IMPERIAL:
- 18°
MSRP: $1,924.95Now: $1,732.46Was: $1,924.95 -
On Sale
S&S CYCLE Cylinder Heads - Twin Cam 90-1106
S&S CYCLE
MSRP: $1,795.95Now: $1,616.36Was: $1,795.95S&S Cycle cylinder heads deliver measurable gains in port flow and breathing efficiency, giving you performance improvements now while preserving headroom for future upgrades. Whether you're running...09300006- SKU:
- 09300006
- Availability:
- Ships Same Business Day
- Weight:
- 29.01 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 89 CC
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- SUPER STOCK
- PRODUCT NAME:
- CYLINDER HEAD KIT
- COLOR/FINISH:
- WRINKLE BLACK
- UNITS:
- PAIR
MSRP: $1,795.95Now: $1,616.36Was: $1,795.95 -
On Sale
S&S CYCLE Hydraulic Lifter Unit 330-0379
S&S CYCLE
MSRP: $149.95Now: $134.96Was: $149.95Maintaining precise valve timing and eliminating harmful valve train noise requires a hydraulic lifter unit engineered to exacting tolerances. The S&S Cycle 330-0379 delivers OEM-quality performance...09290050- SKU:
- 09290050
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- LIFTER
- UNITS:
- EACH
- STYLE:
- HYDRAULIC
MSRP: $149.95Now: $134.96Was: $149.95 -
On Sale
S&S CYCLE Roller Rocker Arms - M8 900-1084
S&S CYCLE
MSRP: $674.95Now: $607.46Was: $674.95S&S Cycle's roller rocker arms deliver superior valve actuation and reduced friction compared to stock designs, translating directly to improved engine efficiency and reliability. The extended...09270038- SKU:
- 09270038
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROLLER
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- ROCKER ARM
- UNITS:
- SET OF 4
- MOUNTING POSITION:
- REAR
MSRP: $674.95Now: $607.46Was: $674.95 -
On Sale
S&S CYCLE GUIDE LIFTER M8 330-0655
S&S CYCLE
MSRP: $79.95Now: $71.96Was: $79.95The S&S Cycle Guide Lifter M8 330-0655 is an essential replacement component for Harley-Davidson M8 engines that demand reliable valve train operation. Precision-engineered to OEM specifications,...09290075- SKU:
- 09290075
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- BLACK
- BASE FINISH:
- ANODIZED
- COLOR/FINISH:
- ANODIZED BLACK
- PRODUCT NAME:
- TAPPET CUFFS
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
MSRP: $79.95Now: $71.96Was: $79.95 -
KODLIN USA Water Reservoir Cover - Chrome K25414
KODLIN USA
$199.99A quality water reservoir cover protects your cooling system from contamination while adding a refined visual detail to your engine bay. If you're running a high-performance setup, keeping debris and...09320314- SKU:
- 09320314
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
$199.99 -
FIGURATI DESIGNS Performance Magnetic Oil Dipstick - Curved - Purple - M8 Touring/Trike FDP01-M8SM-P
FIGURATI DESIGNS
$169.95Keeping tabs on your oil level shouldn't require guesswork or messy dipstick reads. The FIGURATI DESIGNS Performance Magnetic Oil Dipstick delivers precision measurement with an integrated magnetic...07100298- SKU:
- 07100298
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$169.95Qty in Cart: 0Quantity:Price:$169.95Subtotal: -
FIGURATI DESIGNS Magnetic Oil Dipstick - Knurled - Silver - Indian FD01-MAGDSTS-KN-SS
FIGURATI DESIGNS
$159.95Engine wear debris—ferrous particles, metal shavings, and contaminants—circulate through your oil and accelerate internal wear. This magnetic dipstick intercepts harmful metallic particles before...07100313- SKU:
- 07100313
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$159.95 -
FIGURATI DESIGNS Performance Magnetic Oil Dipstick - Curved - Silver - Indian FD01-MAGDSTS-SM-SS
FIGURATI DESIGNS
$159.95Engine wear particles are inevitable—but allowing ferrous debris to circulate through your oil accelerates damage to critical components. This magnetic dipstick intercepts those harmful metals...07100315- SKU:
- 07100315
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$159.95 -
FIGURATI DESIGNS Magnetic Oil Dipstick - Curved - Black - Indian FD01-MAGDSTS-SM-BLK
FIGURATI DESIGNS
$159.95Ferrous metal contamination in your engine oil accelerates wear on critical components—bearings, piston rings, and valve seats all suffer when fine particles circulate with each combustion cycle...07100316- SKU:
- 07100316
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$159.95 -
FIGURATI DESIGNS Magnetic Oil Dipstick - Knurled - Silver - Indian FD01-MAGDSPP-KN-SS
FIGURATI DESIGNS
$159.95Engine wear metals—iron, aluminum, copper—circulate through your oil and accelerate component degradation. This magnetic dipstick intercepts ferrous particles before they cause damage, while giving...07100317- SKU:
- 07100317
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$159.95Qty in Cart: 0Quantity:Price:$159.95Subtotal:
