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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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3 days ago

Only the finest custom #jepistons for IAG Performance builds 🔥🔥Here is a picture of the IAG Stage X billet aluminum short block, because every time we share pictures you guys seem to like it. Also, my boss wants me to get more shares on social media. You know what to do! 👊 ... See MoreSee Less

Only the finest custom #JEpistons for IAG Performance builds 🔥🔥

2 CommentsComment on Facebook

Cleta Platt-Gibson For John.

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4 days ago

Adding boost or spraying nitrous on your stock bottom end? Stop 🛑 relying on your OEM pistons and start looking to upgrade with a set of JE forged pistons. Our pistons are purpose built to handle the extreme cylinder pressures found in high-performance engines, bringing unmatched strength and durability over any cast OEM piston!

#repost Doritech Motorsport Ready for assembly - JE Racing Pistons and OEM connecting rods from S54B32 BMW E46 M3 #jepistons #s54b32 #enginebuild #s54 #e46m3
... See MoreSee Less

Adding boost or spraying nitrous on your stock bottom end? Stop 🛑 relying on your OEM pistons and start looking to upgrade with a set of JE forged pistons. Our pistons are purpose built to handle the extreme cylinder pressures found in high-performance engines, bringing unmatched strength and durability over any cast OEM piston! 

#repost @doritech_motorsport Ready for assembly - JE Racing Pistons and OEM connecting rods from S54B32 BMW E46 M3 #jepistons #s54b32 #enginebuild #s54 #e46m3Image attachment
5 days ago

All new SRP Pro 2618 pistons for Two barrel Hobby Stock, Sport Mod and Stock Car racers! This piston series provides the outstanding durability of 2618 aluminum alloy and includes features such as lightweight forged side relief (FSR) forgings, precision CNC machined ring grooves and skirts, high quality wrist pins, and JE Pro Seal premium piston rings. A complete piston racing package available off-the-shelf that won't break the bank!

Part numbers and product specs found in the link below!

www.jepistons.com/je-auto-blog/srp-pro-2-barrel-circle-track/
... See MoreSee Less

All new SRP Pro 2618 pistons for Two barrel Hobby Stock, Sport Mod and Stock Car racers! This piston series provides the outstanding durability of 2618 aluminum alloy and includes features such as lightweight forged side relief (FSR) forgings, precision CNC machined ring grooves and skirts, high quality wrist pins, and JE Pro Seal premium piston rings. A complete piston racing package available off-the-shelf that wont break the bank! 

Part numbers and product specs found in the link below! 

https://www.jepistons.com/je-auto-blog/srp-pro-2-barrel-circle-track/Image attachmentImage attachment
6 days ago

Rebuilds are in constant rotation for #arenacross! Fresh JE Pro Series slugs going in for the Motonation Suzuki Arenacross team 🌀

#Pistons #forgedpistons #je #ax #arenacross #Suzuki #MotoNation #dirtbike #dirtbikerebuild #ProSeries #jepistons
... See MoreSee Less

Rebuilds are in constant rotation for #Arenacross! Fresh JE Pro Series slugs going in for the @motonationsuzukiarenacross team 🌀 

#pistons #forgedpistons #je #ax #arenacross #suzuki #motonation #dirtbike #dirtbikerebuild #proseries #jepistonsImage attachmentImage attachment
7 days ago

Custom pistons for Powered by RPM's all new EJ Subaru short block builds.

✔️ 1,000HP Capable
✔️ More valve clearance for larger valves
✔️ FSR forging design
✔️ Crown and skirt coated

Boost-ready pistons paired up with boost-ready connecting rods BoostLinetLin#jepistonss#Customu#forgedpistonss#subaruu#EJu#poweredbyrpmb#betterthanbeforee#jeupgradedraded
... See MoreSee Less

Custom pistons for Powered by RPMs all new EJ Subaru short block builds. 

✔️ 1,000HP Capable
✔️ More valve clearance for larger valves
✔️ FSR forging design
✔️ Crown and skirt coated 

Boost-ready pistons paired up with boost-ready connecting rods from BoostLine 💪

#JEpistons #custom #forgedpistons #subaru #ej #poweredbyRPM #betterthanbefore #JEupgradedImage attachment

2 CommentsComment on Facebook

Love the ultra pistons in my sti. Nice and quiet cold starts too!

Boost loading....

1 week ago

Custom #JEpistons for Texas Speed & Performance's 400CID Gen 5 LT1 Short Blocks 🔥 Our pistons are the perfect internal engine upgrade for your stock block adventures! #JE #texasspeed #tsp #forgedpistons #stockblock #upgrade ... See MoreSee Less

Custom #JEpistons for Texas Speed & Performances 400CID Gen 5 LT1 Short Blocks 🔥 Our pistons are the perfect internal engine upgrade for your stock block adventures! #JE #texasspeed #tsp #forgedpistons #stockblock #upgradeImage attachment
2 weeks ago

For the racers making big horsepower who need their parts quickly our Ultra Series pistons offer the most fully-featured and robust piston yo can get without getting into the complexities of a fully custom piston. From LS/LT's to K20's, 2JZ's and many of the usual import forced induction suspects.

Skip the custom piston headache and wait time, shop Ultra Series pistons now 👉 jepistons.com/product-category/auto/je-ultra-series/
... See MoreSee Less

For the racers making big horsepower who need their parts quickly our Ultra Series pistons offer the most fully-featured and robust piston yo can get without getting into the complexities of a fully custom piston. From LS/LTs to K20s, 2JZs and many of the usual import forced induction suspects. 

Skip the custom piston headache and wait time, shop Ultra Series pistons now 👉 jepistons.com/product-category/auto/je-ultra-series/Image attachmentImage attachment

2 CommentsComment on Facebook

Grassroots racers in the USA appreciate all you do for the sport. Thanks JE Pistons

What power do u rate the ls pistons to , I've asked this many times with no reply

2 weeks ago

👀 Fresh set of Ultra Series pistons for Antonio Sureshot 📸 and the Motor Mavens crew. Which ride are these bad boys going in? Stay tuned to see 😎 #jepistons #UltraSeries

#repost Antonio Sureshot 📸 Just received a package in the mail from @jepistons! 😍😍😍 Can you explain what the gold coating on top of the piston does? Also, can you guess which engine these pistons are for?
... See MoreSee Less

👀 Fresh set of Ultra Series pistons for @antoniosureshot and the Motor Mavens crew. Which ride are these bad boys going in? Stay tuned to see 😎 #JEpistons #UltraSeries 

#repost @antoniosureshot Just received a package in the mail from @jepistons! 😍😍😍 Can you explain what the gold coating on top of the piston does? Also, can you guess which engine these pistons are for?
2 weeks ago

Got dish? Check out these R32/VR6 pistons for No Limit Performance 👀 Low compression but ready for plenty of boost 🔥🔥 #jepistons #forgedpistons #vw #audi #r32 #vr6 #boosted #boostready ... See MoreSee Less

Got dish? Check out these R32/VR6 pistons for No Limit Performance 👀 Low compression but ready for plenty of boost 🔥🔥 #JEpistons #forgedpistons #vw #audi #R32 #VR6 #boosted #boostreadyImage attachmentImage attachment+1Image attachment

1 CommentComment on Facebook

Sweet 👌

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