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With racing roots dating back over 70 years, JE Pistons is the industry leader in high-performance forged pistons. JE’s performance and quality is the result of decades of experience gained working with elite engine builders and racers from almost all types of motorsports competition, and is proven in our victories, championships, and innovations. JE controls every step of our manufacturing process, designing, forging, and machining all our pistons 100% in-house in our USA manufacturing facility. Find the perfect set of pistons for your next build off-the-shelf, or work with our technical experts to create a completely custom set.

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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1 day ago

Custom TTRS/DAZA forged pistons for Ostar Motorsports to help take their builds up a notch ✅ Our pistons with a custom touch are the perfect upgrade for anyone taking their stock 5-cylinder TTRS or RS3 to the next level. #audi #ttrs #rs3 #daza #jepistons #forgedpistons #raceready ... See MoreSee Less

Custom TTRS/DAZA forged pistons for @ostarmotorsports to help take their builds up a notch ✅ Our pistons with a custom touch are the perfect upgrade for anyone taking their stock 5-cylinder TTRS or RS3 to the next level.  #Audi #TTRS #RS3 #DAZA #JEpistons #ForgedPistons #RaceReady
6 days ago

Some heavy duty full-round forged pistons for CNC-Motorsports 427ci SBC build 💪 #jepistons #cncmotorsports #forgedpistons ... See MoreSee Less

Some heavy duty full-round forged pistons for CNC-Motorsports 427ci SBC build 💪 #JEpistons #cncmotorsports #forgedpistonsImage attachmentImage attachment

1 CommentComment on Facebook

Daniel Mckenzie

1 week ago

It's the details that set us apart. Our engineers work closely with racers and builders to incorporate purpose-built features into every piston design, ensuring optimal performance and durability for each specific application. From ring grooves, pin oiling, accumulator grooves, and weight optimization, to precision CNC-machined valve pockets and meticulous hand deburring, we prioritize quality and performance in every pa#je
#pistoni#forgedpistonss#IndustryLeadersa#qualitya#performancem#madeinusainUSA
... See MoreSee Less

Its the details that set us apart. Our engineers work closely with racers and builders to incorporate purpose-built features into every piston design, ensuring optimal performance and durability for each specific application. From ring grooves, pin oiling, accumulator grooves, and weight optimization, to precision CNC-machined valve pockets and meticulous hand deburring, we prioritize quality and performance in every part.

#JE #Piston #ForgedPistons #IndustryLeaders #Quality #Performance #MadeinUSAImage attachmentImage attachment+4Image attachment

2 CommentsComment on Facebook

Didn't even question why it cost an arm and a leg. But thanks for putting my unease to rest.

Great work

1 week ago

Some seriously big power being made with these seriously big custom pistons 😳 Any guesses as to what type of engine these will power?

#jepistons #CustomPistons #forgedpistons #cncmachined #horsepower
... See MoreSee Less

Some seriously big power being made with these seriously big custom pistons 😳 Any guesses as to what type of engine these will power?

#jepistons #custompistons #forgedpistons #cncmachined #horsepowerImage attachment

11 CommentsComment on Facebook

With a valve layout like that, it's gotta be a 1300 Alfa Romeo.

BBC I need a set made

I'm guessing a big one

12 valve Cummins

I'm guessing a big block Ford

500 ci hemi

Lycoming 435

Pinto 🤣

F-18

Hemi

Hemi

View more comments

1 week ago

All new 2.35L "destroked" EJ short blocks from the IAG Performance fitted with fully custom #JEpistons. Proud to partner with and work side-by-side with some of the best engine builders in the world to take their platforms to the next level. #JE #custompistons #forgedpistons #boosted #horsepower #enginebuilding #IAGperformance ... See MoreSee Less

All new 2.35L destroked EJ short blocks from the IAG Performance fitted with fully custom #JEpistons. Proud to partner with and work side-by-side with some of the best engine builders in the world to take their platforms to the next level. #JE #custompistons #forgedpistons #boosted #horsepower #enginebuilding #IAGperformanceImage attachment

1 CommentComment on Facebook

💪 💪

2 weeks ago

2.5L Duratec shortblock from Esslinger Engineering going together with all the billet and forged goodies, including that set of JE Pistons on display 🔥

#Esslingerpower #jepistons #forgedpistons #ford #fordperformance #duratecpower #enginebuilding #repost
... See MoreSee Less

2.5L Duratec shortblock from Esslinger Engineering going together with all the billet and forged goodies, including that set of JE Pistons on display 🔥

#esslingerpower #jepistons #forgedpistons #ford #fordperformance #duratecpower #enginebuilding #repost

1 CommentComment on Facebook

Maybe show the Lotus 7 and Locost builders ....

2 weeks ago

High revving your stock bottom end for hours on end without proper upgrades can lead to catastrophic failure, especially under intense endurance racing conditions. OEM pistons simply can't handle the demands of top level endurance racing That why shops like @agar.engineering t#jepistonsstons for their high-performance S50B32 engine builds.

Built for strength and reliability, our pistons are designed to keep you in the race, no matter the challenge! jepistons.com to get the best for your race engin#reposte#forgedpistonss#racingpistonss#raceenginen#enginebuildsu#BMW #S50B325#S50 #jepistonss#agarengineeringering
... See MoreSee Less

High revving your stock bottom end for hours on end without proper upgrades can lead to catastrophic failure, especially under intense endurance racing conditions. OEM pistons simply cant handle the demands of top level endurance racing That why shops like @agar.engineering trust #JEpistons for their high-performance S50B32 engine builds. 

Built for strength and reliability, our pistons are designed to keep you in the race, no matter the challenge! jepistons.com to get the best for your race engine. 

#repost #forgedpistons #racingpistons #raceengine #enginebuilds #bmw #s50b32 #s50 #jepistons #agarengineeringImage attachment

1 CommentComment on Facebook

Are you guys hiring

2 weeks ago

"Can you guys make a set of pistons for..." one of the most common questions we get asked. And the answer is almost always YES! We've been at the forefront of custom pistons technology for over 75 years with experience in every aspect of racing and engine platform out there, including this set of pistons for a Peugeot TU turbo build for HuttSport Ltd.

To get your piston set started, give us a call at 714-898-9763

#jepistons #custompistons #forged #billet #enginebuild #oneoffpieces #usamade
... See MoreSee Less

Can you guys make a set of pistons for... one of the most common questions we get asked. And the answer is almost always YES! Weve been at the forefront of custom pistons technology for over 75 years with experience in every aspect of racing and engine platform out there, including this set of pistons for a Peugeot TU turbo build for HuttSport Ltd. 

To get your piston set started, give us a call at 714-898-9763

#jepistons #custompistons #forged #billet #enginebuild #oneoffpieces #usamadeImage attachment

4 CommentsComment on Facebook

So whats the rough rundown of getting a custom piston? I have a few motors i want to either raise the compression on or turbo....

496 stroker with JE pistons made for me

Jason Jayawardena every day I'm glad I got JE's for the H6.

You made the pistons for my 461 stroker that started life out as a 396. 10 years on the pistons with zero problems and the engine gets sprayed with a lot of nitrous

3 weeks ago

Zac Mertens, aka "Mister Zachary," has BIG plans for his OBS 2dr Tahoe (mostly engine and piston abuse). So, we designed a set of crazy strong pistons with extra coatings to live up to his methanol-fueled, blown LS dreams. He came to see us at the JE office for a look at his parts and some SERIOUSLY in-depth education on what goes into piston design and manufacturing. If you want to learn about pistons and HP, you know what to do! ... See MoreSee Less

0 CommentsComment on Facebook

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