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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 13 KTM SXF450 PRO Piston Kit Quick View
JE Pistons

JE Pistons 13 KTM SXF450 PRO Piston Kit

$329.99
JEP325287
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...
JE Pistons Honda TRX450 PRO 2RNG Piston Single Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 2RNG Piston Single

$374.99
JEP325029S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Honda TRX450 PRO 2RNG Piston Single
JE Pistons Honda TRX450 PRO 2RNG Piston Kit Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 2RNG Piston Kit

$329.99
JEP325029
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...
JE Pistons Honda TRX450 PRO 3RNG Piston Single Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 3RNG Piston Single

$374.99
JEP325028S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Honda TRX450 PRO 3RNG Piston Single
JE Pistons Honda TRX450 PRO 3RNG Piston Kit Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 3RNG Piston Kit

$329.99
JEP325028
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...
JE Pistons Honda TRX450 PRO 3RNG Piston Single Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 3RNG Piston Single

$374.99
JEP325027S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Honda TRX450 PRO 3RNG Piston Single
JE Pistons H0NDA TRX450 PRO 3RNG Piston Kit Quick View
JE Pistons

JE Pistons H0NDA TRX450 PRO 3RNG Piston Kit

$329.99
JEP325027
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...
JE Pistons Honda TRX450 PRO 3RNG Piston Single Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 3RNG Piston Single

$374.99
JEP325026S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Honda TRX450 PRO 3RNG Piston Single
JE Pistons Honda TRX450 PRO 3RNG Piston Kit Quick View
JE Pistons

JE Pistons Honda TRX450 PRO 3RNG Piston Kit

$329.99
JEP325026
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...
JE Pistons Yamaha YFZ450 PRO Piston Single Quick View
JE Pistons

JE Pistons Yamaha YFZ450 PRO Piston Single

$374.99
JEP325025S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Yamaha YFZ450 PRO Piston Single
JE Pistons Yamaha YFZ450 PRO Piston Kit Quick View
JE Pistons

JE Pistons Yamaha YFZ450 PRO Piston Kit

$329.99
JEP325025
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...
JE Pistons Yamaha YFZ450 PRO Piston Single Quick View
JE Pistons

JE Pistons Yamaha YFZ450 PRO Piston Single

$374.99
JEP325024S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Yamaha YFZ450 PRO Piston Single
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