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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 Suzuki SV 650 Piston Kit Quick View
JE Pistons

JE Pistons Suzuki SV 650 Piston Kit

$519.99
JEP324925
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 SV 650 Piston Single Quick View
JE Pistons

JE Pistons Suzuki SV 650 Piston Single

$299.99
JEP324924S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Suzuki SV 650 Piston Single
JE Pistons Suzuki SV 650 Piston Kit Quick View
JE Pistons

JE Pistons Suzuki SV 650 Piston Kit

$519.99
JEP324924
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 Polaris RZR 800 11.5 Piston Single Quick View
JE Pistons

JE Pistons Polaris RZR 800 11.5 Piston Single

$314.99
JEP324923S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Polaris RZR 800 11.5 Piston Single
JE Pistons Polaris RZR 800 11.5 Piston Kit Quick View
JE Pistons

JE Pistons Polaris RZR 800 11.5 Piston Kit

$524.99
JEP324923
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 Polaris RZR 800 11.5 Piston Single Quick View
JE Pistons

JE Pistons Polaris RZR 800 11.5 Piston Single

$314.99
JEP324922S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Polaris RZR 800 11.5 Piston Single
JE Pistons Polaris RZR 800 11.5 Piston Kit Quick View
JE Pistons

JE Pistons Polaris RZR 800 11.5 Piston Kit

$524.99
JEP324922
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 Polaris RZR 800 11.5 Piston Single Quick View
JE Pistons

JE Pistons Polaris RZR 800 11.5 Piston Single

$314.99
JEP324921S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Polaris RZR 800 11.5 Piston Single
JE Pistons Polaris RZR 800 11.5 Piston Kit Quick View
JE Pistons

JE Pistons Polaris RZR 800 11.5 Piston Kit

$524.99
JEP324921
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 Yamaha YZ450F PRO Piston Single Quick View
JE Pistons

JE Pistons Yamaha YZ450F PRO Piston Single

$374.99
JEP324915S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Yamaha YZ450F PRO Piston Single
JE Pistons Yamaha YZ450F PRO Piston Single Quick View
JE Pistons

JE Pistons Yamaha YZ450F PRO Piston Single

$374.99
JEP324914S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Yamaha YZ450F PRO Piston Single
JE Pistons Yamaha YZ450F PRO Piston Kit Quick View
JE Pistons

JE Pistons Yamaha YZ450F PRO Piston Kit

$329.99
JEP324914
Engine Components JE Pistons Misc Powersports Piston Sets - Powersports Uncategorized
JE Pistons Yamaha YZ450F PRO Piston KitThis Part Fits: Year Make Model Submodel 2016-2017 Yamaha WR450F Base 2014-2017 Yamaha YZ450F Base 2016-2017 Yamaha YZ450FX...
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