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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 MITSU 4G63 94STR KIT - Single JE Pistons MITSU 4G63 94STR KIT - Single Quick View
JE Pistons

JE Pistons MITSU 4G63 94STR KIT - Single

$299.99
JEP297480S
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...
Quick View
JE Pistons

JE Pistons Piston Rings UX 82.50mm 1.0/1.2/2.8 DLC set

$470.99
JEPUX1005-3250
Engine Components JE Pistons Piston Rings
JE Pistons Piston Rings UX 82.50mm 1.0/1.2/2.8 DLC set
JE Pistons Chevrolet Big Block Piston Kit 4.610 in Bore 1.120 in CH 29.50 CC -Set of 8 JE Pistons Chevrolet Big Block Piston Kit 4.610 in Bore 1.120 in CH 29.50 CC -Set of 8 Quick View
JE Pistons

JE Pistons Chevrolet Big Block Piston Kit 4.610 in Bore 1.120 in CH 29.50 CC -Set of 8

$1,259.99
JEP293084
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 Audi TT RS 2.5 TFSI 5-Cyl Ultra Series 82.5mm Bore Piston Kit (Single) JE Pistons Audi TT RS 2.5 TFSI 5-Cyl Ultra Series 82.5mm Bore Piston Kit (Single) Quick View
JE Pistons

JE Pistons Audi TT RS 2.5 TFSI 5-Cyl Ultra Series 82.5mm Bore Piston Kit (Single)

$349.99
JEP367846S
Engine Components JE Pistons Pistons - Forged - Single
Designed for Power: Every feature on Ultra Series Pistons are optimized to perform high-horsepower racing enginesAligned Grain Flow Technology: Exclusively available on JE Ultra...
JE Piston Toyota 2JZGTE 8.5:1 Single Piston JE Piston Toyota 2JZGTE 8.5:1 Single Piston Quick View
JE Pistons

JE Piston Toyota 2JZGTE 8.5:1 Single Piston

$299.99
JEP296933S
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...
Quick View
JE Pistons

JE Pistons Special Order Pin - 0.866D / 2.250L / 0.250W H13 Chamfer/DLC

$113.68
JEPH8662250250CD
Engine Components JE Pistons Piston Pins
JE Pistons Special Order Pin - 0.866D / 2.250L / 0.250W H13 Chamfer/DLC
Quick View
JE Pistons

JE Pistons H-13 Wrist Pin / Diameter 0.866 / Length 2.250 / Wall Thickness 0.250

$35.00
JEPH8662250250C
Engine Components JE Pistons Piston Pins Under 100
JE Pistons H-13 Wrist Pin / Diameter 0.866 / Length 2.250 / Wall Thickness 0.250
Quick View
JE Pistons

JE Pistons Wrist Pin - 0.990in. Diameter - 2.930in. Length - 0.240in. Wall - DLC Coating - Single

$210.63
JEP990-2930-24-94S
Engine Components JE Pistons Piston Pins
JE Pistons Wrist Pin - 0.990in. Diameter - 2.930in. Length - 0.240in. Wall - DLC Coating - Single
JE Pistons Chevrolet Big Block Piston - 4.500 in. Bore - 1.395 in. CH - 42.00 CC - Single Piston JE Pistons Chevrolet Big Block Piston - 4.500 in. Bore - 1.395 in. CH - 42.00 CC - Single Piston Quick View
JE Pistons

JE Pistons Chevrolet Big Block Piston - 4.500 in. Bore - 1.395 in. CH - 42.00 CC - Single Piston

$209.99
JEP258261S
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 Chevrolet LS Gen III/IV Piston Kit - 4.075 in. Bore - 1.115 in. CH - 2.80 CC - Qty 8 JE Pistons Chevrolet LS Gen III/IV Piston Kit - 4.075 in. Bore - 1.115 in. CH - 2.80 CC - Qty 8 Quick View
JE Pistons

JE Pistons Chevrolet LS Gen III/IV Piston Kit - 4.075 in. Bore - 1.115 in. CH - 2.80 CC - Qty 8

$997.99
JEP312111
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 Toyota 3SGE BEAMS 3.396in Bore 9.50:1 Inverted Dome/Dish Pistons - Set of 4 JE Pistons Toyota 3SGE BEAMS 3.396in Bore 9.50:1 Inverted Dome/Dish Pistons - Set of 4 Quick View
JE Pistons

JE Pistons Toyota 3SGE BEAMS 3.396in Bore 9.50:1 Inverted Dome/Dish Pistons - Set of 4

$899.99
JEP361462
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 Chevrolet Small Block Left Piston 4.155in Bore 1.062in CH 3.30 CC Dome - Single JE Pistons Chevrolet Small Block Left Piston 4.155in Bore 1.062in CH 3.30 CC Dome - Single Quick View
JE Pistons

JE Pistons Chevrolet Small Block Left Piston 4.155in Bore 1.062in CH 3.30 CC Dome - Single

$209.99
JEP213112L
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...
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