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JE Pistons MILWAUKEE 8 -4.250 / 1.080 Piston Kit

SKU: JEP370252

JE Piston Sets - Powersports...

JE Pistons MILWAUKEE 8 -4.250 / 1.080 Piston Kit

SKU: JEP370252

JE Piston Sets - Powersports...

A$533.80
IN STOCK! Est Ship 3-5 Days days. In stock at 1 location (3 available)

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Description

JE Pistons MILWAUKEE 8 -4.250 / 1.080 Piston Kit

As the leader in forged racing pistons, JE Pistons has been at the forefront of V-Twin and Harley-Davidson piston performance for decades, with over 75 years of experience. JE's carefully developed line of V-Twin pistons is engineered, forged and machined 100 percent in the USA and are designed for each specific engine and use application to provide the ultimate combination of durability and performance. From fun and powerful cruisers to all-out V-Twin drag racing, JE Pistons' performance is proven with every handful of throttle. Equip your bike with the best in forged pistons.

Data: v4.2 - Upd: 2026-11-09 03:56:06

Features

  • Designed specifically for each engine and use application to provide optimized performance durability
  • Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
  • Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
  • Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 04:04:39

Note for Pistons, Rings, Rotors, Rods and engine internals

Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.

(keyword: pistons)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s JE Pistons
StreetFX SKU jep370252
SFX Item ID 4362434
Accounting SKU jep-370252
Manufacturer SKU 370252
Manufacturer UPC 193564219558
Alternative References 370252

Manufacturer Attributes
Add-On 927-073-MW
Piston Volume -6.70
Second Compression Ring Thickness 0.0430
Top Compression Ring Thickness 0.0430
Oil Ring Thickness 0.0787
Wrist Pin Wall Thickness 0.150
Wrist Pin Outer Diameter 0.927
Compression Height 1.080
Bore Diameter 107.95
Compression Ratio Actual 11.00:1
Wrist Pin Length 2.500
Piston Material 2618
Piston Average Weight 425
Piston Head Type Dish
Product Type Engine Piston Kit
Piston Series JE Pistons
Title JE, Harley Davidson, 4.250 in. Bore, 2 Cyl. Kit
Title - Web JE, Harley Davidson, 4.250 in. Bore, 2 Cyl. Kit
Cylinder Head MILWAUKEE 8
Industry Powersports
Category Hierarchy Powersports>Pistons>Piston Kits>V-Twin
Forging Type Round
Product Market V-Twin
Ring Set Included Yes
Engine Type ICE
Wrist Pin Material 5115 Low Carbon Steel, Case Hardened
Out of Stock Message Please Allow Approximately 3 Weeks or Less for Shipping
Bore Diameter - Web 107.95 MM
Manufacturer Designation Piston Set, 2618, Inv Dome/Dish, 4.250 Bore, 1.080 CD, 0.927 Pin, Set of 2.
Product Class Engine Piston Kit
Construction/Type JE, Harley-Davidson, Milwaukee 8, 11.00:1, 4.250 in. Bore, 2 Cyl. Piston Kit
Vehicle Designations HARLEY-DAVIDSON 17-19 MILWAUKEE 8
Product Outline <ul><li>Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications</li><li>Designed specifically for each engine and use application to provide optimized performance durability</li><li>Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin</li><li>Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings</li><li>Made 100% in the USA</li></ul>
Vehicle Brief JE Pistons, Piston Kit
Market Description As the leader in forged racing pistons, JE Pistons has been at the forefront of V-Twin and Harley-Davidson piston performance for decades, with over 75 years of experience. JE?s carefully developed line of V-Twin pistons is engineered, forged and machined 100% in the USA and are designed for each specific engine and use application to provide the ultimate combination of durability and performance. From fun and powerful cruisers to all-out V-Twin drag racing, JE Pistons? performance is proven with every handful of throttle. Equip your bike with the best in forged pistons.

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