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JE Pistons

Home / The History of JE Pistons

The History of JE Pistons

The origins of what we know today as JE Pistons can be traced back to 1912 and the Los Angeles foundry of William Jahns Sr. and his company W.H. Jahns. Employing the tagline, “Nothing but Pistons,” the W.H. Jahns company produced pistons and semi-finished pistons until 1948, when Jahns Sr. retired. Meanwhile, Jahns’ son, William “Uncle Bill” Jahns Jr., started and had been working on his company Jahns’ Racing Pistons since 1947. Shortly after, the business became Jahns’ Engineering Pistons, and was finally shortened to JE Pistons.

Through the following years, JE Pistons’ technology evolved, from mastering casting technology in the 60s to researching and implementing forging technology in the 70s. Numerical Controlled (NC) machines were introduced to manufacturing in the early 80s, which was quickly improved to the use of Computer Numerical Controlled (CNC) machines and a proprietary piston design and machining program in the mid-80s.

JE Pistons has continued to evolve their manufacturing processes, currently offering racing pistons either off the shelf or fully custom. JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE’s 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.

JE Pistons history 03 2 2
JE forging 2

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  • Shop
    • Auto
      • JE Ultra Series
        • Piston Kits
      • JE Pistons
        • Piston Kits
      • SRP Pistons
        • SRP Pro 2618
        • SRP Pro
        • SRP
      • Accessories
        • Pro Seal Piston Rings
        • Wrist Pins
        • Locks
      • Merchandise
      • Clearance
    • Powersports
      • Pistons
        • Ultra Series
        • Pro Series
        • Piston Kits
      • Accessories
        • Rings
        • Locks
        • Wrist Pins
      • Merchandise
      • Clearance
  • Custom Pistons
    • Piston Terminology
    • Standard Custom Piston Features
    • Piston Coatings
    • Custom Piston Order Form
  • Resources
    • Product Catalogs
    • Compression Calculator
    • Ring Installation Guide 2618 Pistons
    • Ring Installation Guide 4032 Pistons Instructions
    • Frequently Asked Questions (FAQs)
    • Combustion Chamber Mold Making Instructions
    • Racer Support
    • JE Pistons Dealers and Distributors
    • JE Pistons Logo Policy
  • About
    • Careers
    • The History of JE Pistons
    • Contact Us
  • Blog
    • Auto
    • Powersports
  • Auto
  • PowerSports
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