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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 Chevrolet Big Block 4.625in. Bore 1.215in. CH 40.00CC Dome Piston Kit - Set of 8 JE Pistons Chevrolet Big Block 4.625in. Bore 1.215in. CH 40.00CC Dome Piston Kit - Set of 8 Quick View
JE Pistons

JE Pistons Chevrolet Big Block 4.625in. Bore 1.215in. CH 40.00CC Dome Piston Kit - Set of 8

$1,283.99
JEP330143
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 Chevrolet Big Block 4.530in Bore 1.645in CH 1.00 CC Piston Kit JE Pistons Chevrolet Big Block 4.530in Bore 1.645in CH 1.00 CC Piston Kit Quick View
JE Pistons

JE Pistons Chevrolet Big Block 4.530in Bore 1.645in CH 1.00 CC Piston Kit

$787.99
JEP338167
Engine Components JE Pistons Piston Sets - Forged - 8cyl
Born from the rich racing experience of JE Pistons, the Sportsman Racing Products (SRP) piston line proudly bridges the gap between high-quality forged piston...
JE Pistons Small Block Chevy 400 4.155in Bore 10.80cc Dome - Single Piston - Left JE Pistons Small Block Chevy 400 4.155in Bore 10.80cc Dome - Single Piston - Left Quick View
JE Pistons

JE Pistons Small Block Chevy 400 4.155in Bore 10.80cc Dome - Single Piston - Left

$213.99
JEP301465L
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 Toyota 2AZ-FE -26.60cc Dome 88.50mm Bore Piston Kit (Set of 4) JE Pistons Toyota 2AZ-FE -26.60cc Dome 88.50mm Bore Piston Kit (Set of 4) Quick View
JE Pistons

JE Pistons Toyota 2AZ-FE -26.60cc Dome 88.50mm Bore Piston Kit (Set of 4)

$899.99
JEP361358
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 Subaru EJ257 Right Single Piston - 99.75mm Bore - 1.130in. CH -21.10 CC JE Pistons Subaru EJ257 Right Single Piston - 99.75mm Bore - 1.130in. CH -21.10 CC Quick View
JE Pistons

JE Pistons Subaru EJ257 Right Single Piston - 99.75mm Bore - 1.130in. CH -21.10 CC

$299.99
JEP296352R
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 Subaru EJ257 Left Single Piston - 99.75mm Bore - 1.130in. CH -21.10 CC JE Pistons Subaru EJ257 Left Single Piston - 99.75mm Bore - 1.130in. CH -21.10 CC Quick View
JE Pistons

JE Pistons Subaru EJ257 Left Single Piston - 99.75mm Bore - 1.130in. CH -21.10 CC

$299.99
JEP296352L
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 Ring Sets .0.0394in Top Ring / 0.0472 2nd Ring / 0.110 Oil Ring / 3.937in Bore Quick View
JE Pistons

JE Pistons Ring Sets .0.0394in Top Ring / 0.0472 2nd Ring / 0.110 Oil Ring / 3.937in Bore

$274.99
JEPJG1006-3937
Engine Components JE Pistons Piston Rings
JE Piston Rings are designed to maximize horsepower through precision sealing of combustion pressure. They are offered in a huge selection of sizes, various...
JE Pistons Subaru EJ20 Single Piston - 92.50 mm Bore - 1.287 in. CH, -11.70 CC Left JE Pistons Subaru EJ20 Single Piston - 92.50 mm Bore - 1.287 in. CH, -11.70 CC Left Quick View
JE Pistons

JE Pistons Subaru EJ20 Single Piston - 92.50 mm Bore - 1.287 in. CH, -11.70 CC Left

$299.99
JEP314438L
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 Small Block 4.155in Bore 1.335in CH 14.50CC Dome Piston Kit (Set of 8) JE Pistons Chevrolet Small Block 4.155in Bore 1.335in CH 14.50CC Dome Piston Kit (Set of 8) Quick View
JE Pistons

JE Pistons Chevrolet Small Block 4.155in Bore 1.335in CH 14.50CC Dome Piston Kit (Set of 8)

$1,259.99
JEP378096
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 Honda K24 Block w/K20A Head 89.0mm Bore 12.5:1 CR 3.0cc Dome Piston Set(Set of 4 Pistons) JE Pistons Honda K24 Block w/K20A Head 89.0mm Bore 12.5:1 CR 3.0cc Dome Piston Set(Set of 4 Pistons) Quick View
JE Pistons

JE Pistons Honda K24 Block w/K20A Head 89.0mm Bore 12.5:1 CR 3.0cc Dome Piston Set(Set of 4 Pistons)

$899.99
JEP361266
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 LS Gen 3/4 3.898 in Bore - Set of 8 JE Pistons Chevrolet LS Gen 3/4 3.898 in Bore - Set of 8 Quick View
JE Pistons

JE Pistons Chevrolet LS Gen 3/4 3.898 in Bore - Set of 8

$748.99
JEP321241
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...
Quick View
JE Pistons

JE Pistons BMW B58B30 Ultra Series Piston Set - 83mm Bore

$1,722.74
JEP389617
Engine Components JE Pistons Piston Sets - Forged - 6cyl
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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