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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 Ferrari 4.0L 330 V12 2V - 78.00 mm Bore - 1.173 in. CH, 15.00 CC - Set of 12 JE Pistons Ferrari 4.0L 330 V12 2V - 78.00 mm Bore - 1.173 in. CH, 15.00 CC - Set of 12 Quick View
JE Pistons

JE Pistons Ferrari 4.0L 330 V12 2V - 78.00 mm Bore - 1.173 in. CH, 15.00 CC - Set of 12

$2,649.99
JEP362229
Engine Components JE Pistons Piston Sets - Custom
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 Ferrari 4.0L 330 V12 2V - 77.50 mm Bore - 1.173 in. CH, 15.40 CC - Set of 12 JE Pistons Ferrari 4.0L 330 V12 2V - 77.50 mm Bore - 1.173 in. CH, 15.40 CC - Set of 12 Quick View
JE Pistons

JE Pistons Ferrari 4.0L 330 V12 2V - 77.50 mm Bore - 1.173 in. CH, 15.40 CC - Set of 12

$2,649.99
JEP362228
Engine Components JE Pistons Piston Sets - Custom
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 104.83mm (4.127inch) Auto Ring Set- 1 cyl. Ring Shelf Stock

$36.99
JEP4127GFX
Engine Components JE Pistons Piston Rings Under 100
JE Pistons 104.83mm (4.127inch) Auto Ring Set- 1 cyl. Ring Shelf Stock
Quick View
JE Pistons

JE Pistons VW 1.8L 20V 9.25 Piston Kit - Single

$299.99
JEP242881S
Engine Components JE Pistons Piston Sets - Forged - 4cyl
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 H13 Wrist Pins .866 Dia 2.250 Long .185 Wall Chamfered

$113.68
JEPH8662250185CD
Engine Components JE Pistons Piston Pins
JE Pistons H13 Wrist Pins .866 Dia 2.250 Long .185 Wall Chamfered
JE Pistons Honda B Series 82.50mm Bore 8.60cc Dome Piston Kit (Set of 4) JE Pistons Honda B Series 82.50mm Bore 8.60cc Dome Piston Kit (Set of 4) Quick View
JE Pistons

JE Pistons Honda B Series 82.50mm Bore 8.60cc Dome Piston Kit (Set of 4)

$899.99
JEP338091
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...
Quick View
JE Pistons

JE Pistons Chevrolet Small Block Stock Car 4.050in Bore 1.250 CD -3.8cc - Right Single Piston

$157.99
JEP377963R
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 Audi 5.2L FSI R8 V10 85mm Bore 1.086 CH -4.70cc Pistons - Set of 10 JE Pistons Audi 5.2L FSI R8 V10 85mm Bore 1.086 CH -4.70cc Pistons - Set of 10 Quick View
JE Pistons

JE Pistons Audi 5.2L FSI R8 V10 85mm Bore 1.086 CH -4.70cc Pistons - Set of 10

$2,699.99
JEP361282
Engine Components JE Pistons Piston Sets - Forged - 10cyl
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 Volkswagen 1.8T 20V 81.50mm Bore 1.281in CH -3.40cc Ultra Series Pistons - Set of 4 JE Pistons Volkswagen 1.8T 20V 81.50mm Bore 1.281in CH -3.40cc Ultra Series Pistons - Set of 4 Quick View
JE Pistons

JE Pistons Volkswagen 1.8T 20V 81.50mm Bore 1.281in CH -3.40cc Ultra Series Pistons - Set of 4

$1,124.99
JEP367856
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...
Quick View
JE Pistons

JE Pistons Subaru EJ 92.50mm Bore -7.00cc 1.209in CH Dish Piston - Single

$299.99
JEP314450L
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 VW 2.0T TSI (23mm Pin) 82.5mm Bore 10.0:1 CR -4.5cc Dish (Set of 4) JE Pistons VW 2.0T TSI (23mm Pin) 82.5mm Bore 10.0:1 CR -4.5cc Dish (Set of 4) Quick View
JE Pistons

JE Pistons VW 2.0T TSI (23mm Pin) 82.5mm Bore 10.0:1 CR -4.5cc Dish (Set of 4)

$899.99
JEP353855
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 Volkswagen 1.8T 20V 81.00mm Bore - 1.281in CH -2.80cc Dish Ultra Series - Set of 4 JE Pistons Volkswagen 1.8T 20V 81.00mm Bore - 1.281in CH -2.80cc Dish Ultra Series - Set of 4 Quick View
JE Pistons

JE Pistons Volkswagen 1.8T 20V 81.00mm Bore - 1.281in CH -2.80cc Dish Ultra Series - Set of 4

$1,124.99
JEP367855
Engine Components JE Pistons Piston Sets - Forged - 4cyl Pistons - Forged - Single
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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