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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

JE Pistons Kawasaki NINJA EX250-F/R Piston Single

$314.99
JEP317557S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki NINJA EX250-F/R Piston Single
Quick View
JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Single

$314.99
JEP317556S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki NINJA EX250-F/R Piston Single
Quick View
JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Kit

$524.99
JEP317556
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...
Quick View
JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Single

$314.99
JEP317555S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki NINJA EX250-F/R Piston Single
Quick View
JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Kit

$524.99
JEP317555
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...
Quick View
JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Single

$314.99
JEP317554S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki NINJA EX250-F/R Piston Single
Quick View
JE Pistons

JE Pistons Kawasaki NINJA EX250-F/R Piston Kit

$524.99
JEP317554
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 2013 RMZ450 PROS Piston Single Quick View
JE Pistons

JE Pistons Suzuki 2013 RMZ450 PROS Piston Single

$374.99
JEP317240S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Suzuki 2013 RMZ450 PROS Piston Single
JE Pistons Suzuki 2013 RMZ450 PROS Piston Single Quick View
JE Pistons

JE Pistons Suzuki 2013 RMZ450 PROS Piston Single

$374.99
JEP317239S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Suzuki 2013 RMZ450 PROS Piston Single
JE Pistons Suzuki 2013 RMZ450 PROS Piston Kit Quick View
JE Pistons

JE Pistons Suzuki 2013 RMZ450 PROS Piston Kit

$329.99
JEP317239
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
JE Pistons Suzuki 2013 RMZ450 PROS Piston KitThis Part Fits: Year Make Model Submodel 2010-2019 Suzuki RMX450Z Base
JE Pistons Suzuki 2013 RMZ450 PROS Piston Single Quick View
JE Pistons

JE Pistons Suzuki 2013 RMZ450 PROS Piston Single

$374.99
JEP317238S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Suzuki 2013 RMZ450 PROS Piston Single
JE Pistons Suzuki 2013 RMZ450 PROS Piston Kit Quick View
JE Pistons

JE Pistons Suzuki 2013 RMZ450 PROS Piston Kit

$329.99
JEP317238
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 Pro Series pistons. Pro...
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