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
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On Sale
S&S CYCLE High Compression Piston Kit 920-0114
S&S CYCLE
MSRP: $521.95Now: $469.76Was: $521.95If you're running stock pistons, you're leaving power on the table. The S&S Cycle High Compression Piston Kit delivers measurable horsepower gains while preserving the torque curve your engine...09103979- SKU:
- 09103979
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- DISPLACEMENT:
- 110'
- PISTON HEAD SHAPE:
- RAISED DOME
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.000'
- TYPE:
- HIGH COMPRESSION
MSRP: $521.95Now: $469.76Was: $521.95 -
On Sale
S&S CYCLE Piston Kit 920-0027
S&S CYCLE
MSRP: $169.95Now: $152.96Was: $169.95If you're running an 883cc or 1200cc Big Twin and want measurable power gains without a complete engine overhaul, this S&S piston kit delivers a straightforward displacement bump to 1250cc with a...09105260- SKU:
- 09105260
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- DISPLACEMENT:
- 80'
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON MATERIAL:
- CAST
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- UNITS:
- KIT
MSRP: $169.95Now: $152.96Was: $169.95 -
On Sale
S&S CYCLE Piston Kit 920-0015
S&S CYCLE
MSRP: $169.95Now: $152.96Was: $169.95Building serious displacement on your Big Twin? The S&S CYCLE Piston Kit 920-0015 delivers a straightforward path to 1250cc without sacrificing reliability. By stepping up from stock bore dimensions,...09105261- SKU:
- 09105261
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- DISPLACEMENT:
- 80'
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON MATERIAL:
- CAST
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE OVERSIZE - IMPERIAL:
- STANDARD
MSRP: $169.95Now: $152.96Was: $169.95 -
On Sale
S&S CYCLE Wrist Pin Circlips - 4 pack 106-2304
S&S CYCLE
MSRP: $7.95Now: $7.16Was: $7.95Wrist pin circlips are critical retention components that keep your piston pins securely seated during high-RPM operation. OEM or worn circlips can fail under load, leading to catastrophic engine...09105262- SKU:
- 09105262
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- CIRCLIP
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
MSRP: $7.95Now: $7.16Was: $7.95 -
On Sale
S&S CYCLE Piston Kit 106-0432
S&S CYCLE
MSRP: $481.95Now: $433.76Was: $481.95If you're running a Big Twin with stock displacement limits holding you back, the S&S CYCLE 1250cc piston kit unlocks meaningful power gains while maintaining reliability on the street or strip. This...09105020- SKU:
- 09105020
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- DISPLACEMENT:
- 103'
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
MSRP: $481.95Now: $433.76Was: $481.95 -
On Sale
S&S CYCLE Race Bearing Set - Big Twin 34-4040
S&S CYCLE
MSRP: $224.95Now: $202.46Was: $224.95If you're rebuilding Big Twin connecting rods, the quality of your bearing set directly impacts engine reliability and performance under load. S&S Cycle's Race Bearing Set delivers OEM-grade...09230207- SKU:
- 09230207
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- PRODUCT NAME:
- RACE
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- CONNECTING ROD
MSRP: $224.95Now: $202.46Was: $224.95 -
On Sale
S&S CYCLE Ring Set 940-0060
S&S CYCLE
MSRP: $168.95Now: $152.06Was: $168.95A quality ring set is fundamental to engine longevity and performance—it seals combustion pressure, controls oil consumption, and directly impacts horsepower delivery. The S&S CYCLE Ring Set 940-0060...09120923- SKU:
- 09120923
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- PISTON
- UNITS:
- 2 PACK
- BORE SIZE IMPERIAL:
- 4.250'
- PRODUCT NAME:
- RING SET
- RIDING STYLE:
- STREET
MSRP: $168.95Now: $152.06Was: $168.95 -
On Sale
S&S CYCLE Replacement Rings 106-4422A
S&S CYCLE
MSRP: $78.95Now: $71.06Was: $78.95Maintaining proper ring-to-piston clearance is critical for engine longevity and peak performance. The S&S Cycle Replacement Rings 106-4422A ensure optimal compression, oil control, and blow-by...09120358- SKU:
- 09120358
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.010'
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.927'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PISTON RING
MSRP: $78.95Now: $71.06Was: $78.95 -
On Sale
S&S CYCLE Replacement Rings 94-1220X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Piston rings are critical wear items that directly impact compression, blow-by control, and oil consumption—especially in high-performance applications where engine stress is constant. S&S Cycle...09120597- SKU:
- 09120597
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PISTON SIZE IMPERIAL:
- STANDARD
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
S&S CYCLE Replacement Rings 94-1222X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Worn or damaged piston rings compromise compression, increase blowby, and rob your engine of power and efficiency. S&S Cycle replacement rings restore proper ring seal, ensuring consistent combustion...09120599- SKU:
- 09120599
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.020'
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
S&S CYCLE Replacement Rings 94-1223X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Piston rings are critical wear items that directly impact compression, blow-by, and overall engine efficiency. S&S Cycle replacement rings restore proper ring-to-bore sealing, which deteriorates over...09120600- SKU:
- 09120600
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- PISTON SIZE IMPERIAL:
- +0.030'
- UNITS:
- SET
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
S&S CYCLE Replacement Rings 94-1226X
S&S CYCLE
MSRP: $63.95Now: $57.56Was: $63.95Keep your S&S Cycle engine breathing at peak efficiency with genuine replacement piston rings engineered to maintain compression, control blow-by, and extend engine life. These OEM-spec rings restore...09120601- SKU:
- 09120601
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- TYPE:
- REPLACEMENT
- PISTON SIZE IMPERIAL:
- +0.060'
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- UNITS:
- SET
MSRP: $63.95Now: $57.56Was: $63.95Qty in Cart: 0Quantity:Price:MSRP: $63.95Now: $57.56Was: $63.95Subtotal: -
On Sale
S&S CYCLE Piston Rings 940-0012
S&S CYCLE
MSRP: $84.95Now: $76.46Was: $84.95Worn or damaged piston rings directly compromise compression, oil control, and power output—making ring replacement one of the most critical maintenance intervals for any high-performance engine. S&S...09120665- SKU:
- 09120665
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.010'
MSRP: $84.95Now: $76.46Was: $84.95 -
On Sale
S&S CYCLE Replacement Rings 94-2216X
S&S CYCLE
MSRP: $64.95Now: $58.46Was: $64.95Engine ring wear directly impacts compression, oil control, and overall engine efficiency. S&S Cycle replacement rings restore factory-spec performance and sealing integrity without requiring...09120001- SKU:
- 09120001
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- PISTON SIZE IMPERIAL:
- STANDARD
- RIDING STYLE:
- STREET
- UNITS:
- SET
MSRP: $64.95Now: $58.46Was: $64.95 -
On Sale
S&S CYCLE Replacement Rings 94-2217X
S&S CYCLE
MSRP: $64.95Now: $58.46Was: $64.95Worn piston rings compromise compression, increase blowby, and rob your engine of power—especially critical in high-performance applications where every PSI counts. S&S Cycle replacement rings...09120003- SKU:
- 09120003
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
MSRP: $64.95Now: $58.46Was: $64.95 -
On Sale
S&S CYCLE Replacement Rings 94-2200X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Worn or damaged piston rings directly compromise engine compression, power output, and fuel efficiency—and no amount of tuning can compensate for poor ring sealing. S&S Cycle replacement rings...09120083- SKU:
- 09120083
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE SIZE IMPERIAL:
- 3.4375'
- PISTON SIZE IMPERIAL:
- STANDARD
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- RIDING STYLE:
- STREET
- UNITS:
- SET
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
S&S CYCLE Replacement Rings 94-2201X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95When your piston rings wear, compression loss and blow-by become inevitable—draining power and increasing fuel consumption. S&S Cycle Replacement Rings restore your engine's sealing integrity and...09120084- SKU:
- 09120084
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.4375'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- RIDING STYLE:
- STREET
- PISTON SIZE IMPERIAL:
- +0.010'
- UNITS:
- SET
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
S&S CYCLE Replacement Rings 94-2202X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Piston rings are critical wear items that directly impact engine compression, oil control, and overall performance. Over time, rings lose their sealing capability, leading to blow-by, reduced power...09120085- SKU:
- 09120085
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.4375'
- PISTON SIZE IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
MSRP: $54.95Now: $49.46Was: $54.95Qty in Cart: 0Quantity:Price:MSRP: $54.95Now: $49.46Was: $54.95Subtotal: -
On Sale
S&S CYCLE Replacement Rings 94-2204X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Maintaining proper ring seal is critical to engine performance, compression, and longevity. Worn or damaged piston rings allow blow-by, reduce power output, and accelerate engine wear. S&S Cycle...09120087- SKU:
- 09120087
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.4375'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- +0.040'
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
S&S CYCLE Replacement Rings 94-2205X
S&S CYCLE
MSRP: $54.95Now: $49.46Was: $54.95Piston rings are critical wear items that directly impact compression, oil control, and engine longevity. Over time, rings lose their sealing integrity, leading to blow-by, reduced power output, and...09120088- SKU:
- 09120088
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- PISTON SIZE IMPERIAL:
- +0.050'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.4375'
MSRP: $54.95Now: $49.46Was: $54.95Qty in Cart: 0Quantity:Price:MSRP: $54.95Now: $49.46Was: $54.95Subtotal:
