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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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16 hours ago

Driver's Racing / Team 880's fresh BBC pistons patiently awaiting machine work and assembly to get out there and set some more landspeed r#enginebuildn#bigblockchevyb#forgedpistonsg#landspeed##bonnevillebonneville ... See MoreSee Less

Drivers Racing / Team 880s fresh BBC pistons patiently awaiting machine work and assembly to get out there and set some more landspeed records! 

#enginebuild #bigblockchevy #forgedpistons #landspeed #bonnevilleImage attachment
2 days ago

Our #SP3 DLC-coated piston rings from #ProSeal are a drop-in upgrade from our JG1001 rings, bringing better sealing power and long-term performance to your high-boost and high-horsepower sport compact engine. Get the best in your next build and shop DLC coated piston rings at jepistons.com 🔧

#Pistons #pistonrings #forgedpistons #dlccoated #DLC #dlcrings #dlcpistonrings #pistonringupgrade #sp3rings #sp3pistonrings #prosealrings
... See MoreSee Less

Our #SP3 DLC-coated piston rings from #ProSeal are a drop-in upgrade from our JG1001 rings, bringing better sealing power and long-term performance to your high-boost and high-horsepower sport compact engine. Get the best in your next build and shop DLC coated piston rings at jepistons.com 🔧

#pistons #pistonrings #forgedpistons #dlccoated #dlc #dlcrings #dlcpistonrings #pistonringupgrade #sp3rings #sp3pistonrings #prosealringsImage attachmentImage attachment
3 days ago

What a legendary day for Pro Circuit Racing in Pro Motocross. Not only did Ty Masterpool earn his first career win at High Point, but that win marked the team's 300th victory 🏆🏁 300 wins is not a small feat, and we're honored to play a small part in the team's iconic performance since the switch t#mx-#motocross
#promotocrosss#jer#jepistons #pcraceteamo#procircuite#kawasakir#highpointsaki #highpoint
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What a legendary day for Pro Circuit Racing in Pro Motocross. Not only did Ty Masterpool earn his first career win at High Point, but that win marked the teams 300th victory 🏆🏁 300 wins is not a small feat, and were honored to play a small part in the teams iconic performance since the switch to 4-strokes 🤝

#mx #motocross #promotocross #je #jepistons #pcraceteam #procircuit #kawasaki #highpointImage attachmentImage attachment+1Image attachment

1 CommentComment on Facebook

Congratulations

4 days ago

Happy Father's Day to all the awesome high-performance dads out there! Enjoy your day 🎉 ... See MoreSee Less

Happy Fathers Day to all the awesome high-performance dads out there! Enjoy your day 🎉
5 days ago

B58 #jepistons on deck today 👊

🏁 Forged from high-quality 2618 aluminum alloy
🏁 Forged Side Relief forging design optimizes weight while maintaining strength
🏁 Accumulator groove helps maintain consistent ring seal
🏁 Moly-based skirt coating reduces operating friction
🏁 10.5:1 compression ratio leaves tuning room for boost

jepistons.com to get your set on order today!

#supra #toyota #b58 #b58engine #forgedpiston #jepistons #je #boosted #turbo #BMW #b58c30 #b58b30
... See MoreSee Less

B58 #jepistons on deck today 👊

🏁 Forged from high-quality 2618 aluminum alloy
🏁 Forged Side Relief forging design optimizes weight while maintaining strength
🏁 Accumulator groove helps maintain consistent ring seal
🏁 Moly-based skirt coating reduces operating friction 
🏁 10.5:1 compression ratio leaves tuning room for boost

jepistons.com to get your set on order today! 

#Supra #Toyota #B58 #B58engine #ForgedPiston #JEpistons #JE #Boosted #Turbo #BMW #B58C30 #B58B30Image attachmentImage attachment+1Image attachment
6 days ago

1,000hp K24 shortblock ready to handle some boost! #jepistons paired up with a set of BoostLine connecting rods 💪

#Reposted from Sportcar Motion
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1,000hp K24 shortblock ready to handle some boost! #jepistons paired up with a set of BoostLine connecting rods 💪

#Reposted from Sportcar MotionImage attachmentImage attachment+1Image attachment
1 week ago

#UltraSeries pistons and BoostLine connecting rods is one of our favorite combinations 🤝😎

#repost from Built By London Racing
4.070 JE Ultra Pistons 360772 - JE Pistons
6.125 Boostline Rods - BoostLine
K1 4.000 Crank - K1 Technologies

Built By HorsePower Research Got More Pics Coming Soon
... See MoreSee Less

#UltraSeries pistons and BoostLine connecting rods is one of our favorite combinations 🤝😎

#Repost from Built By London Racing 
4.070 JE Ultra Pistons 360772 - JE Pistons 
6.125 Boostline Rods - BoostLine 
K1 4.000 Crank - K1 Technologies 

Built By HorsePower Research Got More Pics Coming SoonImage attachment

1 CommentComment on Facebook

Make sure yall go to our YouTube at www.youtube.com/c/BuiltByLondonRacing

1 week ago

#tuneduptuesday with this 2.0 tfsi EA113 Ultra Series pistons for a Golf 6R build in progress over at Garage Performance. Our Ultra Series forged pistons are the industry's strongest, most fully featured pistons available for order off the shelf. Ready for your next high-performance power adder bui#Pistonss#forgedpistonss#jepistonss#UltraSeriese#vws#volkswagonw#vw20tfsi0#golf6ro#highperformancem#builtforboostboost ... See MoreSee Less

#tuneduptuesday with this 2.0 tfsi EA113 Ultra Series pistons for a Golf 6R build in progress over at @garage_performance. Our Ultra Series forged pistons are the industrys strongest, most fully featured pistons available for order off the shelf. Ready for your next high-performance power adder build 👊 #pistons #forgedpistons #jepistons #ultraseries #vw #volkswagon #vw20tfsi #golf6r #highperformance #builtforboostImage attachmentImage attachment
2 weeks ago

The rising popularity of stroker crankshafts gives builders even more options when building their next high-performance LS engine. However, while stroker crankshafts offer significant benefits, it's essential to balance these advantages with the right piston combination when considering clearance, piston speed, rod-length, compression and balance.

We offer piston solutions for 3.622, 3.900, 4.000, and 4.100 stroke cranks as off-the-shelf catalog options with 6.125-inch rods. Find the perfect LS piston for your build at jepistons.c#je
#jepistonss#forgedpistonss#racingpistoni#LSn#lsswaps#strokerlskerls
... See MoreSee Less

The rising popularity of stroker crankshafts gives builders even more options when building their next high-performance LS engine. However, while stroker crankshafts offer significant benefits, its essential to balance these advantages with the right piston combination when considering clearance, piston speed, rod-length, compression and balance. 

We offer piston solutions for 3.622, 3.900, 4.000, and 4.100 stroke cranks as off-the-shelf catalog options with 6.125-inch rods. Find the perfect LS piston for your build at jepistons.com 

#je #jepistons #forgedpistons #racingpiston #ls #lsswap #strokerlsImage attachmentImage attachment+1Image attachment

1 CommentComment on Facebook

Would definitely recommend JE Pissons for customer service had a problem with A set of pistons a few years back running it on the Dyno  went to a smaller bore size because the cylinder walls going out around, went from 4.180 to 4.00 sleeved it,the dish in the piston was not changed to a smaller diameter which didn’t leave enough material between it and the top ring land The result the Pistons broke in that area they replaced them no questions asked!!! 

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