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JE History


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.

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10 hours ago

Formula Drift round one in Long Beach complete 🏁
Jeff Jones Racing powered by #je #UltraSeries letting it all hang out 🤙

📷 Larry Chen Photo

#formuladrift #formulad #drift #drifting #driftcar #jeffjones #horsepower #jepistons #forgedpistons #racingpistons #MadeinUSA
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Formula Drift round one in Long Beach complete 🏁
Jeff Jones Racing powered by #JE #UltraSeries letting it all hang out 🤙

📷 Larry Chen Photo 

#formuladrift #formulad #drift #drifting #driftcar #jeffjones #horsepower #jepistons #forgedpistons #racingpistons #madeinUSA
3 days ago

Out with the old 🙅‍♂️ In with the new ✨️ A fresh JE #ProSeries piston for a top end rebuild on this Husqvarna FC450. This one got our 13.5:1 compression option, about a half-point higher than came stock on this '1#jepistonss#forgedpistonss#dirtbiket#rebuildb#topendo#topendrebuildb#jed#ktm #husqvarnavarna ... See MoreSee Less

Out with the old 🙅‍♂️ In with the new ✨️ A fresh JE #ProSeries piston for a top end rebuild on this Husqvarna FC450. This one got our 13.5:1 compression option, about a half-point higher than came stock on this 17. 

#jepistons #forgedpistons #dirtbike #rebuild #topend #topendrebuild #je #ktm #husqvarnaImage attachmentImage attachment+3Image attachment
3 days ago

From this ➡️ to that 🔥 MooreThrottle ready to take on NMRA/NMCA racing at Rockingham Dragway. Samantha and her #UltraSeries piston equipped Coyote are looking to make some noise and bring home their first trophy of the season! #NMRA #NMCA #dragracing #je #jepistons #forgedpistons #racingpistons #mustang ... See MoreSee Less

From this ➡️ to that 🔥 MooreThrottle ready to take on NMRA/NMCA racing at Rockingham Dragway. Samantha and her #UltraSeries piston equipped Coyote are looking to make some noise and bring home their first trophy of the season! #nmra #nmca #dragracing #je #jepistons #forgedpistons #racingpistons #mustangImage attachment
5 days ago

Proud to be back with Finke Racing for another year of racing!

Jackie and the crew depend on #jepistons to withstand the brutal forces the 3500+ HP engine produces and power them to victory lane!
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Proud to be back with Finke Racing for another year of racing!

Jackie and the crew depend on #JEpistons to withstand the brutal forces the 3500+ HP engine produces and power them to victory lane!Image attachment
6 days ago

Want to get your hands on Ken Roczen's actual race bike and benefit the Love Moto Stop Cancer campaign while you're at it? Support HEP Motorsports Suzuki's Kick Start for a Cause! All the details here: app.sweeppea.com/form/entryPageForm?tkn=cb58e0a6-8427-49e9-b9b2-295648dcde1a&qr=1 ... See MoreSee Less

Want to get your hands on Ken Roczens actual race bike and benefit the Love Moto Stop Cancer campaign while youre at it? Support HEP Motorsports Suzukis Kick Start for a Cause! All the details here: https://app.sweeppea.com/form/entryPageForm?tkn=cb58e0a6-8427-49e9-b9b2-295648dcde1a&qr=1
6 days ago

What makes our Ultra Series pistons so strong? 💪 #jepistons has developed our own forging technology called Aligned Grain Flow forging technology, which brings additional strength to your #UltraSeries pistons without adding any additional mass.

Aligned Grain Flow forging is all about making the best use of the grains of metal within the piston. This in-house developed process allows us to direct grain flow around critical parts of the piston such as the pin bosses, skirt and crown. The end result? The strongest forged pistons on the market!

Shop Ultra Series pistons for your build today jepistons.com/product-category/auto/je-ultra-series/

#je #jepistons #UltraSeries #forgedpistons #racingpistons #pistontech #enginetech #nextleveltechnology
... See MoreSee Less

What makes our Ultra Series pistons so strong? 💪 #JEpistons has developed our own forging technology called Aligned Grain Flow forging technology, which brings additional strength to your #UltraSeries pistons without adding any additional mass.

Aligned Grain Flow forging is all about making the best use of the grains of metal within the piston. This in-house developed process allows us to direct grain flow around critical parts of the piston such as the pin bosses, skirt and crown. The end result? The strongest forged pistons on the market!

Shop Ultra Series pistons for your build today jepistons.com/product-category/auto/je-ultra-series/

#je #jepistons #ultraseries #forgedpistons #racingpistons #pistontech #enginetech #nextleveltechnologyImage attachmentImage attachment+1Image attachment
1 week ago

Another Audi RS3 getting the JE Piston upgrade 💪 Our forged pistons are the perfect choice for anyone looking to ditch their stock internals and build their 5-cylinder TTRS/RS3 engine into a true performance piece. Equip your build with the best at jepistons.com #audi #ttrs #rs3 #jepistons #forgedpistons #enginebuild #performanceupgrades #betterthanstock #americanmade

📷: Sautron Mécanique
... See MoreSee Less

Another Audi RS3 getting the JE Piston upgrade 💪 Our forged pistons are the perfect choice for anyone looking to ditch their stock internals and build their 5-cylinder TTRS/RS3 engine into a true performance piece. Equip your build with the best at jepistons.com  #Audi #TTRS #RS3 #JEPistons #ForgedPistons #EngineBuild #PerformanceUpgrades #BetterThanStock #AmericanMade            

📷: Sautron MécaniqueImage attachmentImage attachment
2 weeks ago

Give us a shout for all your Big Block Chevy needs 🤘

jepistons.com or 714-898-9763
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Give us a shout for all your Big Block Chevy needs 🤘 

jepistons.com or 714-898-9763Image attachmentImage attachment
2 weeks ago

SRP Pro 2618 pistons take the popular SPR Pro line to the next level with stronger 2618 material 💪 100% USA made drop-in ready piston kits 🇺🇸

🏁 Advanced FSR forgings
🏁 Strongest 2618 material
🏁 Premium gas-nitrided ring sets
🏁 Boost-ready
🏁 Large selection of popular domestic applications

See our SRP piston selection here: jepistons.com/product-category/auto/srp-pistons/
... See MoreSee Less

SRP Pro 2618 pistons take the popular SPR Pro line to the next level with stronger 2618 material 💪 100% USA made drop-in ready piston kits 🇺🇸

🏁 Advanced FSR forgings
🏁 Strongest 2618 material
🏁 Premium gas-nitrided ring sets
🏁 Boost-ready
🏁 Large selection of popular domestic applications 

See our SRP piston selection here: jepistons.com/product-category/auto/srp-pistons/Image attachmentImage attachment+1Image attachment

3 CommentsComment on Facebook

Things of beauty!

Looking for a set of 12.5to1 pistons with 118cc heads for a 4.155 bore 4.25" strike big block Chevy. Can you custom make a set? Didn't see anything listed on your website

Nice 👍

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