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 Replacement Rings 94-2206X
S&S CYCLE
MSRP: $54.95Now: $50.55Was: $54.95Proper ring seal is critical to maintaining compression, controlling blow-by, and protecting your engine from accelerated wear. S&S Cycle replacement rings restore the factory performance...09120089- SKU:
- 09120089
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.4375'
- PISTON SIZE IMPERIAL:
- +0.060'
- PRODUCT NAME:
- PISTON RING
MSRP: $54.95Now: $50.55Was: $54.95 -
On Sale
S&S CYCLE CAM KIT 465G M8 17- 330-0624
S&S CYCLE
MSRP: $465.95Now: $428.67Was: $465.95The S&S Cycle 465G cam kit transforms your M8 engine's breathing characteristics, delivering measurable gains in torque and horsepower across the RPM range. Gear-driven cam actuation eliminates...09251161- SKU:
- 09251161
- Availability:
- Ships Same Business Day
- Weight:
- 4.15 LBS
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 218.9°
- INTAKE LIFT IMPERIAL:
- 0.462'
- EXHAUST LIFT IMPERIAL:
- 0.462'
- INTAKE CLOSE IMPERIAL:
- 14.6° FRONT, 14.4° REAR
- INTAKE DURATION IMPERIAL:
- 197.2°
- INTAKE OPEN IMPERIAL:
- 2.6° FRONT, 2.8° REAR
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 100.6° FRONT, 103.6° REAR
- PRODUCT NAME:
- CAM KIT
- TYPE:
- GEAR
- EXHAUST OPEN IMPERIAL:
- 30.1° FRONT, 33.1° REAR
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $465.95Now: $428.67Was: $465.95 -
On Sale
S&S CYCLE Cam Kit - MR103 Grind - Twin Cam 330-0470
S&S CYCLE
MSRP: $399.95Now: $367.95Was: $399.95If you're running a Twin Cam engine and serious about maximizing valve timing accuracy and cam lift potential, gear drive conversion is a proven upgrade. The S&S CYCLE MR103 eliminates timing chain...09251143- SKU:
- 09251143
- Availability:
- Ships Same Business Day
- Weight:
- 4.05 LBS
- FEATURES:
- INCLUDES INSTALLATION KIT
- UNITS:
- KIT
- EXHAUST CLOSE IMPERIAL:
- 22°
- INTAKE OPEN IMPERIAL:
- 13°
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 252°
- EXHAUST LIFT IMPERIAL:
- 0.585'
- GRIND:
- MR103
- INTAKE LIFT IMPERIAL:
- 0.585'
- PRODUCT NAME:
- CAM KIT
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST OPEN IMPERIAL:
- 50°
- INTAKE CLOSE IMPERIAL:
- 33°
- INTAKE DURATION IMPERIAL:
- 226°
- TYPE:
- CHAIN
MSRP: $399.95Now: $367.95Was: $399.95 -
On Sale
S&S CYCLE Cam with Plate - 551 Series 310-0812
S&S CYCLE
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95Stock cam timing and chain tensioners limit your engine's potential and introduce reliability concerns on high-revving applications. The S&S 551 Series delivers measurable gains in lift and valve...09251100- SKU:
- 09251100
- Availability:
- Ships Same Business Day
- Weight:
- 12.55 LBS
- APPLICATION:
- INTAKE
- MODEL:
- EASY START
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- EXHAUST OPEN IMPERIAL:
- 41°
- GRIND:
- 551 SERIES
- INTAKE CLOSE IMPERIAL:
- 19°
- PRODUCT NAME:
- CAMSHAFT
- EXHAUST CLOSE IMPERIAL:
- 17°
- EXHAUST LIFT IMPERIAL:
- 0.550'
- INTAKE DURATION IMPERIAL:
- 215°
- INTAKE LIFT IMPERIAL:
- 0.550'
- INTAKE OPEN IMPERIAL:
- 17°
- UNITS:
- KIT
- EXHAUST DURATION IMPERIAL:
- 237°
- RIDING STYLE:
- STREET
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95Qty in Cart: 0Quantity:Price:MSRP: $2,259.95Now: $2,079.15Was: $2,259.95Subtotal: -
On Sale
S&S CYCLE Cam with Plate - 585 Series 310-0813
S&S CYCLE
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95Stock cam systems in high-performance engines are a reliability liability. The S&S 585 Series upgrade replaces weak OEM components with precision-engineered parts that deliver higher valve lift,...09251101- SKU:
- 09251101
- Availability:
- Ships Same Business Day
- Weight:
- 12.60 LBS
- EXHAUST DURATION IMPERIAL:
- 260°
- GRIND:
- 585 SERIES
- PRODUCT NAME:
- CAMSHAFT
- UNITS:
- KIT
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.585'
- INTAKE LIFT IMPERIAL:
- 0.585'
- MODEL:
- EASY START
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- EXHAUST OPEN IMPERIAL:
- 60°
- INTAKE CLOSE IMPERIAL:
- 45°
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 20°
- INTAKE DURATION IMPERIAL:
- 245°
- INTAKE OPEN IMPERIAL:
- 20°
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95 -
On Sale
S&S CYCLE Cam with Plate - 510 Series 310-0814
S&S CYCLE
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95A worn or stock camshaft limits your engine's breathing potential and valve timing precision—exactly what separates a baseline motor from a high-performance machine. The S&S Cycle 510 Series replaces...09251102- SKU:
- 09251102
- Availability:
- Ships Same Business Day
- Weight:
- 13.05 LBS
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 252°
- EXHAUST LIFT IMPERIAL:
- 0.510'
- UNITS:
- KIT
- APPLICATION:
- EXHAUST
- MODEL:
- STANDARD
- PRODUCT NAME:
- CAMSHAFT
- EXHAUST OPEN IMPERIAL:
- 52°
- INTAKE CLOSE IMPERIAL:
- 38°
- INTAKE DURATION IMPERIAL:
- 238°
- INTAKE LIFT IMPERIAL:
- 0.510'
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- EXHAUST CLOSE IMPERIAL:
- 20°
- GRIND:
- 510 SERIES
- INTAKE OPEN IMPERIAL:
- 20°
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95 -
On Sale
S&S CYCLE Intake Valve - 1.940" - Twin Cam 90-2025
S&S CYCLE
MSRP: $50.95Now: $46.87Was: $50.95A precision intake valve is fundamental to maximizing your Twin Cam engine's breathing efficiency and power output. This S&S Cycle component ensures proper fuel-air mixture delivery and sealing...20082918- SKU:
- 20082918
- Availability:
- Ships Same Business Day
- Weight:
- 0.28 LBS
- HEAD DIAMETER IMPERIAL:
- 1.940'
- PRODUCT NAME:
- VALVE
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- RIDING STYLE:
- STREET
MSRP: $50.95Now: $46.87Was: $50.95 -
On Sale
S&S CYCLE Exhaust Valve - 1.575" - Twin Cam 90-2026
S&S CYCLE
MSRP: $71.95Now: $66.19Was: $71.95A properly functioning exhaust valve is critical to your Twin Cam engine's breathing efficiency and peak horsepower delivery. S&S Cycle's precision-engineered 1.575" exhaust valve ensures optimal...20082919- SKU:
- 20082919
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- STREET
- HEAD DIAMETER IMPERIAL:
- 1.575'
- APPLICATION:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- VALVE
- UNITS:
- EACH
MSRP: $71.95Now: $66.19Was: $71.95 -
On Sale
S&S CYCLE Solid Pushrods - Big Twin 93-5068
S&S CYCLE
MSRP: $175.95Now: $161.87Was: $175.95If you're running stock hydraulic lifters on your Big Twin, you're leaving performance on the table. Converting to solid pushrods gives you direct valve train control, eliminates hydraulic lag, and...20085003- SKU:
- 20085003
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- RIDING STYLE:
- STREET
- STYLE:
- SOLID
- MATERIAL:
- STEEL
- UNITS:
- KIT
- PRODUCT NAME:
- CONVERSION KIT
- TYPE:
- LIFTER
MSRP: $175.95Now: $161.87Was: $175.95 -
On Sale
S&S CYCLE Cam with Plate - 585 Series 310-0816
S&S CYCLE
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95Stock camshafts and outdated valve timing limit your engine's potential—this S&S 585 Series cam upgrade delivers measurable gains in lift and duration, translating directly to improved horsepower and...09251104- SKU:
- 09251104
- Availability:
- Ships Same Business Day
- Weight:
- 12.90 LBS
- EXHAUST DURATION IMPERIAL:
- 260°
- GRIND:
- 585 SERIES
- INTAKE LIFT IMPERIAL:
- 0.585'
- PRODUCT NAME:
- CAMSHAFT
- UNITS:
- KIT
- INTAKE CLOSE IMPERIAL:
- 45°
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.585'
- MODEL:
- EASY START
- RIDING STYLE:
- STREET
- TYPE:
- GEAR
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 20°
- EXHAUST OPEN IMPERIAL:
- 60°
- INTAKE DURATION IMPERIAL:
- 245°
- INTAKE OPEN IMPERIAL:
- 20°
MSRP: $2,259.95Now: $2,079.15Was: $2,259.95 -
On Sale
S&S CYCLE Piston Kit 92-1211
S&S CYCLE
MSRP: $546.95Now: $503.19Was: $546.95If you're building a high-displacement stroker engine for your HD Big Twin, you need pistons engineered for the specific displacement and load demands of your build. The S&S CYCLE 92-1211 forged...20012911- SKU:
- 20012911
- Availability:
- Ships Same Business Day
- Weight:
- 3.02 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- DISPLACEMENT:
- 106'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,010'
- PISTON MATERIAL:
- FORGED ALUMINUM
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4-1/2'
MSRP: $546.95Now: $503.19Was: $546.95Qty in Cart: 0Quantity:Price:MSRP: $546.95Now: $503.19Was: $546.95Subtotal: -
On Sale
S&S CYCLE Piston Kit 92-1212
S&S CYCLE
MSRP: $546.95Now: $503.19Was: $546.95If you're building a 106" stroker engine for your HD Big Twin, you need pistons engineered specifically for that displacement—not generic aftermarket units. The S&S Cycle 92-1212 forged pistons are...20012912- SKU:
- 20012912
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- BORE - OVERSIZE:
- +0,020'
- PISTON MATERIAL:
- FORGED ALUMINUM
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- DISPLACEMENT:
- 106'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
MSRP: $546.95Now: $503.19Was: $546.95 -
On Sale
S&S CYCLE Rings for 106" Kit 94-1295X
S&S CYCLE
MSRP: $75.95Now: $69.87Was: $75.95Piston rings are critical wear items that directly impact compression, blow-by control, and oil consumption in your 106" engine. OEM rings degrade over time, leading to lost power, increased fuel...20022910- SKU:
- 20022910
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.875'
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- STANDARD
MSRP: $75.95Now: $69.87Was: $75.95 -
On Sale
S&S CYCLE Rings for 106" Kit 94-1296X
S&S CYCLE
MSRP: $74.95Now: $68.95Was: $74.95Piston rings are critical wear items that directly impact compression, blow-by control, and oil consumption in your 106" big-bore engine. S&S Cycle rings are precision-manufactured to OEM...20022912- SKU:
- 20022912
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.875'
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
MSRP: $74.95Now: $68.95Was: $74.95 -
On Sale
S&S CYCLE Generator Crankcase Gear Kit 33-4226
S&S CYCLE
MSRP: $799.95Now: $735.95Was: $799.95The S&S Cycle Generator Crankcase Gear Kit 33-4226 is engineered for Harley-Davidson riders who demand reliable charging system performance and durability. This complete gear assembly eliminates...334226- SKU:
- 334226
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- COLOR/FINISH:
- RAW
- PRODUCT NAME:
- GEAR KIT
- RIDING STYLE:
- STREET
- MODEL:
- SUPER STOCK®
- TYPE:
- ENGINE CASE
- UNITS:
- KIT
MSRP: $799.95Now: $735.95Was: $799.95Qty in Cart: 0Quantity:Price:MSRP: $799.95Now: $735.95Was: $799.95Subtotal: -
DRAG SPECIALTIES Oil Filter with Nut - Chrome 14-0020CK-BX18
DRAG SPECIALTIES
$15.70A quality oil filter is essential to engine longevity—it removes contaminants that accumulate during combustion and normal wear, protecting critical internal components from premature damage. This...07120011- SKU:
- 07120011
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- COLOR/FINISH:
- CHROME
- FEATURES:
- INCLUDES NUT
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- STYLE:
- STANDARD
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
$15.70 -
DRAG SPECIALTIES Oil Filter - Chrome 14-0018C-BX41
DRAG SPECIALTIES
$12.55A quality oil filter is non-negotiable for engine longevity—it directly impacts how well your oil circulates and protects critical internal components. The Drag Specialties Chrome 14-0018C-BX41...DS275118- SKU:
- DS275118
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- BASE FINISH:
- CHROME
- STYLE:
- STANDARD
- COLOR/FINISH:
- CHROME
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
$12.55 -
DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 2-1/4" 140004HP-BX29
DRAG SPECIALTIES
$19.90Engine longevity depends on clean oil, and clean oil depends on effective filtration. This Drag Specialties magnetic spin-on filter captures ferrous metal particles that standard filters miss,...DS275125- SKU:
- DS275125
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- BASE FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- CHROME
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$19.90Qty in Cart: 0Quantity:Price:$19.90Subtotal: -
DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 5-1/2" 140018HP-BX41
DRAG SPECIALTIES
$19.90Engine longevity depends on clean oil, and clean oil depends on effective filtration. This DRAG SPECIALTIES magnetic ring oil filter captures ferrous metal particles before they circulate through...DS275127- SKU:
- DS275127
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- FEATURES:
- WITHOUT NUT
- PRODUCT NAME:
- OIL FILTER
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$19.90 -
DRAG SPECIALTIES Oil Filter - Paper 14-0007-A-BX18
DRAG SPECIALTIES
$11.50Proper oil filtration is non-negotiable in high-performance racing, where engine stress demands absolute protection against contaminants that compromise lubrication and accelerate wear. The DRAG...DS275202- SKU:
- DS275202
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- TYPE:
- DROP-IN
- COLOR/FINISH:
- ORANGE
- UNITS:
- EACH
- BASE COLOR:
- ORANGE
$11.50
