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  • Sale! JE, Yamaha, 77.00 mm Bore, 1 Cyl. Kit

    JE, Yamaha, 77.00 mm Bore, 1 Cyl. Kit

    MSRP: $275.02
    Your Price: $245.46
    SKU 362954

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  • Sale! JE, Arctic Cat, 92.00 mm Bore, 2 Cyl. Kit

    JE, Arctic Cat, 92.00 mm Bore, 2 Cyl. Kit

    MSRP: $509.22
    Your Price: $454.48
    SKU 317195

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  • Sale! JE, Polaris, 3.228 in. Bore, 2 Cyl. Kit

    JE, Polaris, 3.228 in. Bore, 2 Cyl. Kit

    MSRP: $509.22
    Your Price: $454.48
    SKU 324922

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  • Sale! Placeholder

    JE, Polaris, 3.661 in. Bore, 2 Cyl. Kit

    MSRP: $613.80
    Your Price: $547.82
    SKU 363688

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  • Sale! JE, Polaris, 3.661 in. Bore, 2 Cyl. Kit

    JE, Polaris, 3.661 in. Bore, 2 Cyl. Kit

    MSRP: $613.80
    Your Price: $547.82
    SKU 363683

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  • Sale! Placeholder

    JE, Can-Am, 74.00 mm Bore, 3 Cyl. Kit

    MSRP: $794.90
    Your Price: $709.45
    SKU 366830

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  • Sale! JE, Harley Davidson, 3.937 in. Bore, 2 Cyl. Kit

    JE, Harley Davidson, 3.937 in. Bore, 2 Cyl. Kit

    MSRP: $433.95
    Your Price: $387.30
    SKU 370243

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  • Sale! JE, Honda, 79.00 mm Bore, 1 Cyl. Kit

    JE, Honda, 79.00 mm Bore, 1 Cyl. Kit

    MSRP: $373.82
    Your Price: $333.64
    SKU 373034

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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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Get $250 Toward your New Pistons!

The LIGHTEST Pistons EVER: Introducing Hollow Crown

The LIGHTEST Pistons EVER: Introducing Hollow Crown

The Strongest Pistons in Powersports: JE Ultra Series

The Strongest Pistons in Powersports: JE Ultra Series

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JE Pistons
1 day ago
JE Pistons

Another lights out performance from Eric Dewey DeWitt and his team as they brought home the 🏆 in this years Gridlife Street Mod Battle! 🥇🏁 Proudly powered by #jepistons

#jepistons #gridlife #timeattack #subaru #subarustothetop
... See MoreSee Less

Another lights out performance from Eric Dewey DeWitt and his team as they brought home the 🏆 in this years Gridlife Street Mod Battle! 🥇🏁 Proudly powered by #JEpistons 

#JEpistons #gridlife #timeattack #subaru #subarustothetopImage attachmentImage attachment
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  • Likes: 18
  • Shares: 3
  • Comments: 4

4 CommentsComment on Facebook

Can't thank you guys enough for your support! Can't wait to continue to push the limits with you!!

🏴‍☠️🏴‍☠️🏴‍☠️🏴‍☠️🏴‍☠️

🏴‍☠️🏴‍☠️🏴‍☠️🏴‍☠️

🏁🏴‍☠️

JE Pistons
4 days ago
JE Pistons

#FunFactFriday Thermal Barrier Crown Coating applied to the top of the piston is designed to reflect heat into the combustion chamber, thereby increasing exhaust gas velocity and greatly improving scavenging potential. The .0015” thick coating can also assist in extending piston life by decreasing the rate of thermal transfer. Thermal Barrier Crown Coating is a standard feature on all of our #je #UltraSeries pistons! ... See MoreSee Less

#FunFactFriday Thermal Barrier Crown Coating applied to the top of the piston is designed to reflect heat into the combustion chamber, thereby increasing exhaust gas velocity and greatly improving scavenging potential. The .0015” thick coating can also assist in extending piston life by decreasing the rate of thermal transfer. Thermal Barrier Crown Coating is a standard feature on all of our #JE #UltraSeries pistons!
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  • Likes: 119
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  • Comments: 6

6 CommentsComment on Facebook

Beautiful 👌especially adding a hair dryer and raising combustion temps💯👍

Wins championships too!

Pietro Tomić to satare bez problema ❤️

Do you have these for a 225 slant six engine at 20 over!

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JE Pistons is at LA Memorial Coliseum.
5 days ago
JE Pistons

The final round of SuperMotocross at the Coliseum was iconic 🎇 Kenny was on rails at the #SMX rounds on his #jepistons powered RM-Z, but we also have to give it up to Jettson for going home with the big pay day 💸

📸 Brown Dog Wilson
HEP Motorsports
Twisted Development
#supermotocross #supercross #motocross #sx #mx #moto #suzuki #lacoliseum #forgedpistons #je #racingpistons
... See MoreSee Less

The final round of SuperMotocross at the Coliseum was iconic 🎇 Kenny was on rails at the #SMX rounds on his #JEpistons powered RM-Z, but we also have to give it up to Jettson for going home with the big pay day 💸

📸 Brown Dog Wilson
HEP Motorsports 
Twisted Development 
#supermotocross #supercross #motocross #sx #mx #moto #suzuki #lacoliseum #forgedpistons #je #racingpistonsImage attachmentImage attachment+1Image attachment
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  • Likes: 8
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JE Pistons
5 days ago
JE Pistons

LS 427 build from the CNC-Motorsports team. 4.125" #JEpistons with a -3.2cc dome sitting at 12.5:1 compression ratio 💨🔥

#JE #forgedpistons #CNCMotorsports #LS427 #LS #LSshortblock #enginebuilder
... See MoreSee Less

LS 427 build from the CNC-Motorsports team. 4.125 #JEpistons with a -3.2cc dome sitting at 12.5:1 compression ratio 💨🔥

#JE #forgedpistons #CNCMotorsports #LS427 #LS #LSshortblock #enginebuilder
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JE Pistons
1 week ago
JE Pistons

Veicomer Engine Performance showcasing their latest #2jz build! Powered by a set of #je #UltraSeries pistons 🏁

#jepistons #2jz #toyotasupra #Toyota2jzgte #toyota2jz #veicomer
... See MoreSee Less

Veicomer Engine Performance showcasing their latest #2JZ build! Powered by a set of #JE #UltraSeries pistons 🏁 

#jepistons #2jz #toyotasupra #toyota2jzgte #toyota2jz #veicomerImage attachment
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  • Likes: 49
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1 CommentComment on Facebook

👌

JE Pistons
1 week ago
JE Pistons

@thatengineguy is starting a 3,000hp 400" LS turbo engine build over on YouTube featuring some of the best industry products. Including a set of #JE #UltraSeries pistons 💪

Head over to his channel to see some of the most in-depth and detailed engine building videos on the net!

#repost @thatengineguy Ricky’s custom 3,000hp 400” LS turbo engine is coming together!! Head over to YouTube to check out the build series 🏁

@dartmachinery Block Bryant Racing Crank @cp_carrillo Rods @jepistons Pistons @bes.racing.engines Induction @tdmachineproducts Rockers @jesel_valvetrain Lifters & Belt Drive
... See MoreSee Less

@thatengineguy is starting a 3,000hp 400 LS turbo engine build over on YouTube featuring some of the best industry products. Including a set of #JE #UltraSeries pistons 💪

Head over to his channel to see some of the most in-depth and detailed engine building videos on the net! 

#repost @thatengineguy Ricky’s custom 3,000hp 400” LS turbo engine is coming together!! Head over to YouTube to check out the build series 🏁

@dartmachinery Block Bryant Racing Crank @cp_carrillo Rods @jepistons Pistons @bes.racing.engines Induction @tdmachineproducts Rockers @jesel_valvetrain Lifters & Belt DriveImage attachmentImage attachment+1Image attachment
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  • Likes: 166
  • Shares: 3
  • Comments: 4

4 CommentsComment on Facebook

Shaun Chris

I'm going to be honest trying to look and find something on these websites is a real pain in the ass. I miss the catalogs for at least able to go on the website and use it as a catalog but I haven't found the first piston on this site and I like your products but I sure don't like the way it's done

3,000 with h beams?! 😂 The explosion will get his views

3k hp on a steel h-beam?

JE Pistons
2 weeks ago
JE Pistons

Jason Soucy�#jepistonsstons powered big block mud racer has been putting in work this year 💪 A custom set of pistons has powered them to multiple class wins and a shot at the championship this year#PoweredByJEd#forgedpistonss#CustomPistonss#mudraced#mudracingacing ... See MoreSee Less

Jason Soucys #JEpistons powered big block mud racer has been putting in work this year 💪 A custom set of pistons has powered them to multiple class wins and a shot at the championship this year! 🏁

#PoweredbyJE #forgedpistons #custompistons #mudrace #mudracingImage attachmentImage attachment+2Image attachment
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  • Likes: 14
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JE Pistons
2 weeks ago
JE Pistons

Sliding through the week like 💨🏁
🏎 Jeff Jones Racing powered by #je #UltraSeries
📷 Larry Chen Photo

#formualdrift #drifting #370z #LS #lsswapped #jepistons #forgedpistons #racingpistons
... See MoreSee Less

Sliding through the week like 💨🏁
🏎 Jeff Jones Racing powered by #JE #UltraSeries 
📷 Larry Chen Photo 

#formualdrift #drifting #370z #LS #lsswapped #jepistons #forgedpistons #racingpistons
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  • Likes: 12
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JE Pistons
2 weeks ago
JE Pistons

Another year of Bikes in the Valley in the books! Adam Sheran won two classes on his white 'Busa while Bob Bradley and Floyd Appleby took home the win and runner-up in Street ET on the ZX-14 and GSX-R, respectively.
Get your bike prepped for your next drag race with#UltraSerieseries pistons for sport bikes! Check 'em out on JEpist#dragracingd#hayabusa #ninjazx14##suzuki1#kawasaki #bikesinthevalleyn#jepistons##jei#forgedpistonsgedpistons
... See MoreSee Less

Another year of Bikes in the Valley in the books! Adam Sheran won two classes on his white Busa while Bob Bradley and Floyd Appleby took home the win and runner-up in Street ET on the ZX-14 and GSX-R, respectively. 
Get your bike prepped for your next drag race with our #UltraSeries pistons for sport bikes! Check em out on JEpistons.com.

#dragracing #hayabusa #ninjazx14 #suzuki #kawasaki #bikesinthevalley #jepistons #je #forgedpistonsImage attachmentImage attachment
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  • Likes: 11
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3 CommentsComment on Facebook

Thank you JE Pistons!

Adam Sheran Floyd Appleby Bob Bradley

Thank you JE PISTONS for sponsoring BIV. 👍

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