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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 Honda XR650L 10.5 to 1 Piston Kit Quick View
JE Pistons

JE Pistons Honda XR650L 10.5 to 1 Piston Kit

$269.99
JEP300275
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
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 Kawasaki BRUTE FORCE 750 Piston Single Quick View
JE Pistons

JE Pistons Kawasaki BRUTE FORCE 750 Piston Single

$314.99
JEP300274S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki BRUTE FORCE 750 Piston Single
JE Pistons Kawasaki BRUTE FORCE 750 Piston Kit Quick View
JE Pistons

JE Pistons Kawasaki BRUTE FORCE 750 Piston Kit

$524.99
JEP300274
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
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 Kawasaki BRUTE FORCE 750 Piston Single Quick View
JE Pistons

JE Pistons Kawasaki BRUTE FORCE 750 Piston Single

$314.99
JEP300273S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki BRUTE FORCE 750 Piston Single
JE Pistons Kawasaki BRUTE FORCE 750 Piston Kit Quick View
JE Pistons

JE Pistons Kawasaki BRUTE FORCE 750 Piston Kit

$524.99
JEP300273
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
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 Kawasaki ULTRA 300X Piston Single Quick View
JE Pistons

JE Pistons Kawasaki ULTRA 300X Piston Single

$329.99
JEP300272S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki ULTRA 300X Piston Single
JE Pistons Kawasaki ULTRA 300X Piston Kit Quick View
JE Pistons

JE Pistons Kawasaki ULTRA 300X Piston Kit

$1,119.99
JEP300272
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its range of Ultra Series pistons -...
JE Pistons Kawasaki ULTRA 300X Piston Single Quick View
JE Pistons

JE Pistons Kawasaki ULTRA 300X Piston Single

$329.99
JEP300271S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki ULTRA 300X Piston Single
JE Pistons Kawasaki ULTRA 300X Piston Kit Quick View
JE Pistons

JE Pistons Kawasaki ULTRA 300X Piston Kit

$1,119.99
JEP300271
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its range of Ultra Series pistons -...
JE Pistons Suzuki Hayabusa 08-11 Piston Single Quick View
JE Pistons

JE Pistons Suzuki Hayabusa 08-11 Piston Single

$309.99
JEP300270S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Suzuki Hayabusa 08-11 Piston Single
JE Pistons Suzuki Hayabusa 08-11 Piston Kit Quick View
JE Pistons

JE Pistons Suzuki Hayabusa 08-11 Piston Kit

$1,034.99
JEP300270
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
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 Suzuki Hayabusa 08-11 Piston Single Quick View
JE Pistons

JE Pistons Suzuki Hayabusa 08-11 Piston Single

$309.99
JEP300269S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Suzuki Hayabusa 08-11 Piston Single
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