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JE Pistons

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.

JE Pistons has continued to evolve their manufacturing processes, currently offering racing pistons either off the shelf or fully custom. JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE’s 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.

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JE Pistons SUB STI EJ257 Block w/ EJ20 Head 99.5mm Bore CR 8.5 (Left Side) Single Piston JE Pistons SUB STI EJ257 Block w/ EJ20 Head 99.5mm Bore CR 8.5 (Left Side) Single Piston Quick View
JE Pistons

JE Pistons SUB STI EJ257 Block w/ EJ20 Head 99.5mm Bore CR 8.5 (Left Side) Single Piston

$299.99
JEP291059L
Engine Components JE Pistons Pistons - Forged - Single
Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applicationsDesigned specifically for each engine and use application to...
JE Pistons BMW S50B30 EURO KIT Set of 6 Pistons JE Pistons BMW S50B30 EURO KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S50B30 EURO KIT Set of 6 Pistons

$1,324.99
JEP289190
Engine Components JE Pistons Piston Sets - Forged - 6cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons

$1,324.99
JEP289079
Engine Components JE Pistons Piston Sets - Forged - 6cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons BMW S50B32 Euro Kit - Single Piston JE Pistons BMW S50B32 Euro Kit - Single Piston Quick View
JE Pistons

JE Pistons BMW S50B32 Euro Kit - Single Piston

$299.99
JEP289078S
Engine Components JE Pistons Pistons - Forged - Single
Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applicationsDesigned specifically for each engine and use application to...
JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons

$1,324.99
JEP289078
Engine Components JE Pistons Piston Sets - Forged - 6cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S50B32 EURO KIT Set of 6 Pistons

$1,324.99
JEP289074
Engine Components JE Pistons Piston Sets - Forged - 6cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons SUB 8.8:1 BILLET KIT Set of 4 Pistons JE Pistons SUB 8.8:1 BILLET KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons SUB 8.8:1 BILLET KIT Set of 4 Pistons

$1,799.99
JEP286463
Engine Components JE Pistons Piston Sets - Forged - 4cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons VW2.0T FS1 9.5:1 KIT Set of 4 Pistons JE Pistons VW2.0T FS1 9.5:1 KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons VW2.0T FS1 9.5:1 KIT Set of 4 Pistons

$899.99
JEP284781
Audi A4 Engine Components JE Pistons Piston Sets - Forged - 4cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons BBC INV DOME Set of 8 Pistons JE Pistons BBC INV DOME Set of 8 Pistons Quick View
JE Pistons

JE Pistons BBC INV DOME Set of 8 Pistons

$1,096.99
JEP282059
Engine Components JE Pistons Piston Sets - Forged - 8cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons BBC INV DOME Set of 8 Pistons JE Pistons BBC INV DOME Set of 8 Pistons Quick View
JE Pistons

JE Pistons BBC INV DOME Set of 8 Pistons

$1,076.99
JEP282058
Engine Components JE Pistons Piston Sets - Forged - 8cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons BBC FT HD/BLOWN Set of 8 Pistons JE Pistons BBC FT HD/BLOWN Set of 8 Pistons Quick View
JE Pistons

JE Pistons BBC FT HD/BLOWN Set of 8 Pistons

$1,016.99
JEP282044
Engine Components JE Pistons Piston Sets - Forged - 8cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
JE Pistons 454 BBC FT HD/BLOWN Set of 8 Pistons JE Pistons 454 BBC FT HD/BLOWN Set of 8 Pistons Quick View
JE Pistons

JE Pistons 454 BBC FT HD/BLOWN Set of 8 Pistons

$1,016.99
JEP282043
Engine Components JE Pistons Piston Sets - Forged - 8cyl
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons...
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