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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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5 days ago
JE Pistons

Out with the old ❌ In with the new ✅ Check out this side-by-side comparison of OE cast BMW pistons and our forged racing counterparts. All of our forged pistons are engineered for strength, durability, and performance under extreme conditions—delivering exactly what high-output BMW builds demand.

📸: Tristan Kustomizing
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Out with the old ❌ In with the new ✅ Check out this side-by-side comparison of OE cast BMW pistons and our forged racing counterparts. All of our forged pistons are engineered for strength, durability, and performance under extreme conditions—delivering exactly what high-output BMW builds demand.

📸: @tristankustomizingImage attachmentImage attachment+1Image attachment
6 days ago
JE Pistons

Another max-effort stock car build from Baldwin Racing Engines is ready to hit the track—and it’s powered by JE. We’re proud to be the only piston company making shelf-stock pistons designed specifically for circle track stock car racing. If your goal is to spend the summer in victory lane, make sure your using a builder who chooses JE 🏁 ... See MoreSee Less

Another max-effort stock car build from Baldwin Racing Engines is ready to hit the track—and it’s powered by JE. We’re proud to be the only piston company making shelf-stock pistons designed specifically for circle track stock car racing. If your goal is to spend the summer in victory lane, make sure your using a builder who chooses JE 🏁Image attachmentImage attachment+1Image attachment

2 CommentsComment on Facebook

What kind of je Pistons they make for a stock 350

Your products hold up very well !

7 days ago
JE Pistons

What's the deal with asymmetrical piston designs? Mike MotoIQ.comQ.com dives deep into the details on one of our unique shelf-stock piston designs, highlighting features like our FSR forging, undercrown milling, accumulator groove, and more—all used in their naturally aspirated Nissan KA24DE build. Link to the full build breakdown in the comments. ... See MoreSee Less

Whats the deal with asymmetrical piston designs? Mike from MotoIQ.com dives deep into the details on one of our unique shelf-stock piston designs, highlighting features like our FSR forging, undercrown milling, accumulator groove, and more—all used in their naturally aspirated Nissan KA24DE build. Link to the full build breakdown in the comments.Image attachmentImage attachment+1Image attachment

7 CommentsComment on Facebook

Dunno. But Wossners one are shite

Quality equipment and more!!!

How can we order

I hope JE had improved.. ive had too many failures lately with JE pistond.

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1 week ago
JE Pistons

This is what passion and community is all about!! When a crazy storm rolled through the Englishtown, NJ round of Formula DRIFT, Jeff Jones quickly found that nobody in his pit was hurt thankfully, but his competition car was. Some may think it's all over for the weekend, but his crew and FD peers came together and worked nonstop to get it ready to Saturday competition. This is a great example of why we love being a part of the performance racing industry 🤝 ... See MoreSee Less

This is what passion and community is all about!! When a crazy storm rolled through the Englishtown, NJ round of @formulad, @jeffjonesracing quickly found that nobody in his pit was hurt thankfully, but his competition car was. Some may think its all over for the weekend, but his crew and FD peers came together and worked nonstop to get it ready to Saturday competition. This is a great example of why we love being a part of the performance racing industry 🤝Image attachmentImage attachment
2 weeks ago
JE Pistons

‼ We Will Be Closed July 3rd & 4th ‼ We'll be out celebrating freedom Thursday and Friday, but you can always find our products and content at JEpistons.com - which is also where you can take advantage of our July 4th Sale!

#JEpistons #July4th #MadeinUSA
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‼ We Will Be Closed July 3rd & 4th ‼ Well be out celebrating freedom Thursday and Friday, but you can always find our products and content at JEpistons.com - which is also where you can take advantage of our July 4th Sale! 

#JEpistons #July4th #MadeinUSA

1 CommentComment on Facebook

I need some pistons, SBC 18* p/n213108 but in bore size 4.185

2 weeks ago
JE Pistons

Here’s another sneak peek at the latest addition to our circle track piston lineup—our all-new 9:1 pistons, purpose-built to meet the new IMCA spec engine rules. More details on these coming soon!

#jepistons #new #pistons #circletrack #imcaracing #usraracing
... See MoreSee Less

Here’s another sneak peek at the latest addition to our circle track piston lineup—our all-new 9:1 pistons, purpose-built to meet the new IMCA spec engine rules. More details on these coming soon!

 #jepistons #new #pistons #circletrack #imcaracing #usraracingImage attachmentImage attachment

14 CommentsComment on Facebook

How can we order

hmm interesting, Whats the Theory behind the straight cuts from around the top of the piston to the top ring?

What class?

Do they still call that a claimer piston or am I way off there ?

Do piston companies not have CAD with fillet features? 30 years now and you'd think someone could have a ball mill make some fillets on the valve pockets so people don't have to.

Very good 👍

How much does it weigh

Everything is a secret in motorsports. Very lame

Ho sempre bisogno di fare costruire pistoni prototipo in piccole quantita, con voi e possibile ,mandando un disegno tecnico.?

Available for ford 347?

Where is your office of JE Pistons

so what are the IMCA spec engine rules? Is this like reading a 900 page Government bill?

Quality equipment and more!!!

Nice 👍

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3 weeks ago
JE Pistons

This 4th of July, we’re celebrating freedom, forged strength, and full-throttle builds. The Stars, Stripes, and Horsepower Sale is your chance to take your engine to the next level—with a little help from America’s most trusted name in racing pistons.

Save up to 10% on JE Pistons today at JEpistons.com with code FREEDOM
... See MoreSee Less

This 4th of July, we’re celebrating freedom, forged strength, and full-throttle builds. The Stars, Stripes, and Horsepower Sale is your chance to take your engine to the next level—with a little help from America’s most trusted name in racing pistons.

Save up to 10% on JE Pistons today at JEpistons.com with code FREEDOMImage attachmentImage attachment+2Image attachment

1 CommentComment on Facebook

Quality equipment and more!!!

3 weeks ago
JE Pistons

Building the ultimate Dirt Modified race engine? That’s just another day at the office for our friends at Stoen Racing Engines. 💪

Hit the comments to watch the full step-by-step build of a 700hp, 415ci powerhouse—equipped with a set of high-compression custom JE Pistons built to keep this beast turning left and making power all day long. 🏁
... See MoreSee Less

Building the ultimate Dirt Modified race engine? That’s just another day at the office for our friends at Stoen Racing Engines. 💪

Hit the comments to watch the full step-by-step build of a 700hp, 415ci powerhouse—equipped with a set of high-compression custom JE Pistons built to keep this beast turning left and making power all day long. 🏁Image attachmentImage attachment

3 CommentsComment on Facebook

I need a product like this for a special project I'm working on.

Following

3 weeks ago
JE Pistons

The growing popularity of stroker crankshafts has opened up even more possibilities for builders putting together high-performance LS engines. While these cranks offer clear advantages in power and torque, pairing them with the correct piston setup is critical—taking into account clearance, piston speed, rod length, compression, and balance.

We offer off-the-shelf piston solutions for 3.622", 3.900", 4.000", and 4.100" stroke cranks, all designed for use with 6.125" rods. Find the best LS piston for your next build at jepistons.com

#je #jepistons #forgedpistons #racingpiston #ls #lsswap #strokerls
... See MoreSee Less

The growing popularity of stroker crankshafts has opened up even more possibilities for builders putting together high-performance LS engines. While these cranks offer clear advantages in power and torque, pairing them with the correct piston setup is critical—taking into account clearance, piston speed, rod length, compression, and balance.

We offer off-the-shelf piston solutions for 3.622, 3.900, 4.000, and 4.100 stroke cranks, all designed for use with 6.125 rods. Find the best LS piston for your next build at jepistons.com

#je #jepistons #forgedpistons #racingpiston #ls #lsswap #strokerlsImage attachmentImage attachment

1 CommentComment on Facebook

Quality

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