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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 RENAULT CLIO RS F4R 12.8:1 Set of 4 Pistons JE Pistons RENAULT CLIO RS F4R 12.8:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO RS F4R 12.8:1 Set of 4 Pistons

$899.99
JEP312454
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 RENAULT CLIO RS F4R 12.8:1 Set of 4 Pistons JE Pistons RENAULT CLIO RS F4R 12.8:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO RS F4R 12.8:1 Set of 4 Pistons

$899.99
JEP312453
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 RENAULT CLIO F7P 8:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7P 8:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7P 8:1 Set of 4 Pistons

$899.99
JEP312451
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 RENAULT CLIO F7P 8:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7P 8:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7P 8:1 Set of 4 Pistons

$899.99
JEP312450
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 RENAULT CLIO F7P 8:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7P 8:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7P 8:1 Set of 4 Pistons

$899.99
JEP312449
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 RENAULT R5 7.0:1 Set of 5 Pistons JE Pistons RENAULT R5 7.0:1 Set of 5 Pistons Quick View
JE Pistons

JE Pistons RENAULT R5 7.0:1 Set of 5 Pistons

$899.99
JEP312445
Engine Components JE Pistons Piston Sets - Forged - 5cyl
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 RENAULT R5 7.0:1 Set of 5 Pistons JE Pistons RENAULT R5 7.0:1 Set of 5 Pistons Quick View
JE Pistons

JE Pistons RENAULT R5 7.0:1 Set of 5 Pistons

$899.99
JEP312444
Engine Components JE Pistons Piston Sets - Forged - 5cyl
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 RENAULT R5 7.0:1 Set of 5 Pistons JE Pistons RENAULT R5 7.0:1 Set of 5 Pistons Quick View
JE Pistons

JE Pistons RENAULT R5 7.0:1 Set of 5 Pistons

$899.99
JEP312443
Engine Components JE Pistons Piston Sets - Forged - 5cyl
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 RENAULT CLIO F7R 8.5:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7R 8.5:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7R 8.5:1 Set of 4 Pistons

$899.99
JEP312442
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 RENAULT CLIO F7R 8.5:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7R 8.5:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7R 8.5:1 Set of 4 Pistons

$899.99
JEP312441
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 RENAULT CLIO F7R 8.5:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7R 8.5:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7R 8.5:1 Set of 4 Pistons

$899.99
JEP312440
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 RENAULT CLIO F7RR 12.7:1 Set of 4 Pistons JE Pistons RENAULT CLIO F7RR 12.7:1 Set of 4 Pistons Quick View
JE Pistons

JE Pistons RENAULT CLIO F7RR 12.7:1 Set of 4 Pistons

$899.99
JEP312439
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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