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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 Ultra Series Honda K20C 86mm Bore 10.0:1 CR Set of 4 Pistons JE Pistons Ultra Series Honda K20C 86mm Bore 10.0:1 CR Set of 4 Pistons Quick View
JE Pistons

JE Pistons Ultra Series Honda K20C 86mm Bore 10.0:1 CR Set of 4 Pistons

$1,124.99
JEP361278
Engine Components JE Pistons Piston Sets - Forged - 4cyl
Ultra Series forged pistons from JE are the industry?s strongest, most fully featured pistons available off the shelf. Offered for a wide range of...
JE Pistons Ultra Series Honda K20A 87.5mm Bore 10.0:1 CR Set of 4 Pistons JE Pistons Ultra Series Honda K20A 87.5mm Bore 10.0:1 CR Set of 4 Pistons Quick View
JE Pistons

JE Pistons Ultra Series Honda K20A 87.5mm Bore 10.0:1 CR Set of 4 Pistons

$1,124.99
JEP361274
Engine Components JE Pistons Piston Sets - Forged - 4cyl
Ultra Series forged pistons from JE are the industry?s strongest, most fully featured pistons available off the shelf. Offered for a wide range of...
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JE Pistons Gen 3 Coyote 5.0 Ultra Series 3.661in Bore 11:1 CR 1.5cc Dome Pistons - Set of 8 Pistons JE Pistons Gen 3 Coyote 5.0 Ultra Series 3.661in Bore 11:1 CR 1.5cc Dome Pistons - Set of 8 Pistons Quick View
JE Pistons

JE Pistons Gen 3 Coyote 5.0 Ultra Series 3.661in Bore 11:1 CR 1.5cc Dome Pistons - Set of 8 Pistons

$1,395.99
JEP360833
Engine Components JE Pistons Piston Sets - Forged - 8cyl
Ultra Series forged pistons from JE are the industry?s strongest, most fully featured pistons available off the shelf. Offered for a wide range of...
JE Pistons 2012+ Subaru FA20E/FA20F Bore 86, Oversize STD, Stroke 86, 10.0:1 C/R -13.2CC (Set of 4) JE Pistons 2012+ Subaru FA20E/FA20F Bore 86, Oversize STD, Stroke 86, 10.0:1 C/R -13.2CC (Set of 4) Quick View
JE Pistons

JE Pistons 2012+ Subaru FA20E/FA20F Bore 86, Oversize STD, Stroke 86, 10.0:1 C/R -13.2CC (Set of 4)

$899.99
JEP359157
Engine Components JE Pistons Piston Pins 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 Toyota 4U-GSE 86.00mm Bore STD Size 12.5:1 CR -1.0cc Dome FSR Piston (Set of 4) JE Pistons Toyota 4U-GSE 86.00mm Bore STD Size 12.5:1 CR -1.0cc Dome FSR Piston (Set of 4) Quick View
JE Pistons

JE Pistons Toyota 4U-GSE 86.00mm Bore STD Size 12.5:1 CR -1.0cc Dome FSR Piston (Set of 4)

$899.99
JEP359152
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 Honda L15B Turbo 73.5mm Bore 10.3:1 CR -10.1cc Dome Piston Set - Set of 4 JE Pistons Honda L15B Turbo 73.5mm Bore 10.3:1 CR -10.1cc Dome Piston Set - Set of 4 Quick View
JE Pistons

JE Pistons Honda L15B Turbo 73.5mm Bore 10.3:1 CR -10.1cc Dome Piston Set - Set of 4

$899.99
JEP357430
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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JE Pistons Honda L15B Turbo 73mm Bore 10.3:1 CR -9.6cc Dome Piston Set - Set of 4 JE Pistons Honda L15B Turbo 73mm Bore 10.3:1 CR -9.6cc Dome Piston Set - Set of 4 Quick View
JE Pistons

JE Pistons Honda L15B Turbo 73mm Bore 10.3:1 CR -9.6cc Dome Piston Set - Set of 4

$899.99
JEP357429
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 2015+ Honda K20C 86mm Bore 9.8:1 CR -1.5.cc Dish Piston Kit (Set of 4) JE Pistons 2015+ Honda K20C 86mm Bore 9.8:1 CR -1.5.cc Dish Piston Kit (Set of 4) Quick View
JE Pistons

JE Pistons 2015+ Honda K20C 86mm Bore 9.8:1 CR -1.5.cc Dish Piston Kit (Set of 4)

$899.99
JEP357423
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 Gen 3 Coyote 5.0L 3.701in Bore 12:1 CR 5.86cc Dome Pistons - Set of 8 Pistons JE Pistons Gen 3 Coyote 5.0L 3.701in Bore 12:1 CR 5.86cc Dome Pistons - Set of 8 Pistons Quick View
JE Pistons

JE Pistons Gen 3 Coyote 5.0L 3.701in Bore 12:1 CR 5.86cc Dome Pistons - Set of 8 Pistons

$971.99
JEP353907
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 18+ Ford Coyote Gen 3 3.661in Bore 12.0:1 CR 7.0cc Dome Pistons - Set of 8 JE Pistons 18+ Ford Coyote Gen 3 3.661in Bore 12.0:1 CR 7.0cc Dome Pistons - Set of 8 Quick View
JE Pistons

JE Pistons 18+ Ford Coyote Gen 3 3.661in Bore 12.0:1 CR 7.0cc Dome Pistons - Set of 8

$971.99
JEP353906
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 VW 2.0T TSI (23mm Pin) 83mm Bore 9.6:1 CR Piston (Set of 4) JE Pistons VW 2.0T TSI (23mm Pin) 83mm Bore 9.6:1 CR Piston (Set of 4) Quick View
JE Pistons

JE Pistons VW 2.0T TSI (23mm Pin) 83mm Bore 9.6:1 CR Piston (Set of 4)

$899.99
JEP353860
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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JE Pistons 2013+ VW 2.0 (23mm Pin) 82.5mm Bore 9.6:1 CR -7.1cc Dish Piston (Set of 4) JE Pistons 2013+ VW 2.0 (23mm Pin) 82.5mm Bore 9.6:1 CR -7.1cc Dish Piston (Set of 4) Quick View
JE Pistons

JE Pistons 2013+ VW 2.0 (23mm Pin) 82.5mm Bore 9.6:1 CR -7.1cc Dish Piston (Set of 4)

$899.99
JEP353859
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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