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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 BMW S54B32 12.5 KIT Set of 6 Pistons JE Pistons BMW S54B32 12.5 KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S54B32 12.5 KIT Set of 6 Pistons

$1,324.99
JEP297119
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 S54B32 11.5 KIT Single Piston JE Pistons BMW S54B32 11.5 KIT Single Piston Quick View
JE Pistons

JE Pistons BMW S54B32 11.5 KIT Single Piston

$299.99
JEP297118S
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 S54B32 9:1 KIT Single Piston JE Pistons BMW S54B32 9:1 KIT Single Piston Quick View
JE Pistons

JE Pistons BMW S54B32 9:1 KIT Single Piston

$299.99
JEP297116S
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 S54B32 9:1 KIT Set of 6 Pistons JE Pistons BMW S54B32 9:1 KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S54B32 9:1 KIT Set of 6 Pistons

$1,324.99
JEP297116
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 S54B32 9:1 KIT Set of 6 Pistons JE Pistons BMW S54B32 9:1 KIT Set of 6 Pistons Quick View
JE Pistons

JE Pistons BMW S54B32 9:1 KIT Set of 6 Pistons

$1,324.99
JEP297115
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 MITSU 4G63 EVO KIT Single Piston JE Pistons MITSU 4G63 EVO KIT Single Piston Quick View
JE Pistons

JE Pistons MITSU 4G63 EVO KIT Single Piston

$299.99
JEP297050S
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 MITSU 4G63 EVO KIT Set of 4 Pistons JE Pistons MITSU 4G63 EVO KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons MITSU 4G63 EVO KIT Set of 4 Pistons

$899.99
JEP297050
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 MITSU 4G63 2.3L KIT Set of 4 Pistons JE Pistons MITSU 4G63 2.3L KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons MITSU 4G63 2.3L KIT Set of 4 Pistons

$899.99
JEP297049
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 MITSU 4G63 2.3L KIT Set of 4 Pistons JE Pistons MITSU 4G63 2.3L KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons MITSU 4G63 2.3L KIT Set of 4 Pistons

$899.99
JEP297048
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 MITSU 4G63 2.3L KIT Set of 4 Pistons JE Pistons MITSU 4G63 2.3L KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons MITSU 4G63 2.3L KIT Set of 4 Pistons

$899.99
JEP297047
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 MITSU EVO VII-IX KIT Set of 4 Pistons JE Pistons MITSU EVO VII-IX KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons MITSU EVO VII-IX KIT Set of 4 Pistons

$849.99
JEP297009
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 MITSU EVO VII-IX KIT Set of 4 Pistons JE Pistons MITSU EVO VII-IX KIT Set of 4 Pistons Quick View
JE Pistons

JE Pistons MITSU EVO VII-IX KIT Set of 4 Pistons

$849.99
JEP297008
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...
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