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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 4.530in Bore 1.645in CH -3.00 CC Piston Set JE Pistons Chevrolet Big Block 4.530in Bore 1.645in CH -3.00 CC Piston Set Quick View
JE Pistons

JE Pistons Chevrolet Big Block 4.530in Bore 1.645in CH -3.00 CC Piston Set

$734.99
JEP139483
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...
Quick View
JE Pistons

JE Pistons Chevrolet Big Block 4.280in Bore 1.645in CH -3.00 CC Piston - Single

$157.99
JEP139477S
Engine Components JE Pistons Pistons - Forged - Single
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...
Quick View
JE Pistons

JE Pistons Chevrolet Small Block 4.040in Bore 1.125in CH -5.00 CC Piston - Single

$157.99
JEP138094S
Engine Components JE Pistons Pistons - Forged - Single
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 Chevrolet Small Block 4.030in Bore 1.125in CH -5.00 CC Piston Kit JE Pistons Chevrolet Small Block 4.030in Bore 1.125in CH -5.00 CC Piston Kit Quick View
JE Pistons

JE Pistons Chevrolet Small Block 4.030in Bore 1.125in CH -5.00 CC Piston Kit

$656.99
JEP138093
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 Chevrolet Small Block 4.030in Bore 1.425in CH -5.00 CC Piston Kit JE Pistons Chevrolet Small Block 4.030in Bore 1.425in CH -5.00 CC Piston Kit Quick View
JE Pistons

JE Pistons Chevrolet Small Block 4.030in Bore 1.425in CH -5.00 CC Piston Kit

$656.99
JEP138089
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...
Quick View
JE Pistons

JE Pistons Chevrolet Small Block 4.030in Bore 1.560in CH -5.00 CC Piston - Single

$157.99
JEP138081S
Engine Components JE Pistons Pistons - Forged - Single
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...
Quick View
JE Pistons

JE Pistons Small Block Chevy 350 Series 4.030in Bore - Single Piston - Right Side Only

$209.99
JEP181916R
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 .0394 AH Top Ring / .0472 AH Ring 2 / 3.0mm Oil Ring / 4.060 Bore Quick View
JE Pistons

JE Pistons Ring Sets .0394 AH Top Ring / .0472 AH Ring 2 / 3.0mm Oil Ring / 4.060 Bore

$183.99
JEPJG1004-2894
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...
Quick View
JE Pistons

JE Pistons Nissan KA24DE 89mm Bore 1.336in CH -4.00cc Dish - Single Piston

$299.99
JEP317930S
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 Piston Ring Sets - 043-043-3.0-116.967 Quick View
JE Pistons

JE Piston Ring Sets - 043-043-3.0-116.967

$47.99
JEPJG7701-4600-5
Engine Components JE Pistons Piston Rings Under 100
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 Oil Rail Support Ring 3.999in-4.029in Bore JE Pistons Oil Rail Support Ring 3.999in-4.029in Bore Quick View
JE Pistons

JE Pistons Oil Rail Support Ring 3.999in-4.029in Bore

$8.99
JEP4000-162
Engine Components JE Pistons Piston Rings Under 100
JE Oil Rail Supports feature a special locking detent to prevent rotation of the oil rail and keep the rail support gap 90? from...
JE Pistons Ring Set - 4.145 in. Bore - 0.0591 in. Top / 0.0591 in. 2nd / 0.118 in. Oil - 8 Cyl Quick View
JE Pistons

JE Pistons Ring Set - 4.145 in. Bore - 0.0591 in. Top / 0.0591 in. 2nd / 0.118 in. Oil - 8 Cyl

$285.99
JEPJ68008-4145-5
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...
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