customercare@ajusa.com

Free shipping on all orders over $99

My Account
800-877-1911
0 My Cart: $0.00

Your cart is currently empty.

Continue shopping
Total: $0.00
View cart
Toggle menu
0

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.

× Close
Categories
JE Pistons 2019 KX450 96MM 12.5 to 1 Piston Kit Quick View
JE Pistons

JE Pistons 2019 KX450 96MM 12.5 to 1 Piston Kit

$309.99
JEP362955
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 2019 YZ250F 77MM 14.5 to 1 Piston Single Quick View
JE Pistons

JE Pistons 2019 YZ250F 77MM 14.5 to 1 Piston Single

$329.99
JEP362954S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons 2019 YZ250F 77MM 14.5 to 1 Piston Single
JE Pistons 2019 YZ250F 77MM 14 to 1 Piston Single Quick View
JE Pistons

JE Pistons 2019 YZ250F 77MM 14 to 1 Piston Single

$329.99
JEP362953S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons 2019 YZ250F 77MM 14 to 1 Piston Single
JE Pistons 2019 YZ250F 77MM 14 to 1 Piston Kit Quick View
JE Pistons

JE Pistons 2019 YZ250F 77MM 14 to 1 Piston Kit

$299.99
JEP362953
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 2018 Honda CRF250 14.4 to 1 Piston Single Quick View
JE Pistons

JE Pistons 2018 Honda CRF250 14.4 to 1 Piston Single

$349.99
JEP355532S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons 2018 Honda CRF250 14.4 to 1 Piston Single
JE Pistons 2018 Honda CRF250 14.4 to 1 Piston Kit Quick View
JE Pistons

JE Pistons 2018 Honda CRF250 14.4 to 1 Piston Kit

$349.99
JEP355532
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 2018 Honda CRF250 13.9 to 1 Piston Single Quick View
JE Pistons

JE Pistons 2018 Honda CRF250 13.9 to 1 Piston Single

$349.99
JEP355531S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons 2018 Honda CRF250 13.9 to 1 Piston Single
JE Pistons 2018 Honda CRF250 13.9 to 1 Piston Kit Quick View
JE Pistons

JE Pistons 2018 Honda CRF250 13.9 to 1 Piston Kit

$349.99
JEP355531
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 KX250F 17 BB 14.0 to 1 Piston Single Quick View
JE Pistons

JE Pistons Kawasaki KX250F 17 BB 14.0 to 1 Piston Single

$424.99
JEP345201S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki KX250F 17 BB 14.0 to 1 Piston Single
JE Pistons Kawasaki KX250F 17 BB 14.0 to 1 Piston Kit Quick View
JE Pistons

JE Pistons Kawasaki KX250F 17 BB 14.0 to 1 Piston Kit

$424.99
JEP345201
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 KX250F 17 14.0 to 1 Piston Single Quick View
JE Pistons

JE Pistons Kawasaki KX250F 17 14.0 to 1 Piston Single

$424.99
JEP345200S
Engine Components JE Pistons Misc Powersports Pistons - Forged - Single
JE Pistons Kawasaki KX250F 17 14.0 to 1 Piston Single
JE Pistons Kawasaki KX 250F 17 14.0 to 1 Piston Kit Quick View
JE Pistons

JE Pistons Kawasaki KX 250F 17 14.0 to 1 Piston Kit

$424.99
JEP345200
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...
Show More
Items 493 to 504 of 4984 total
compare
×

Someone recently bought a

We use cookies to improve your experience on our website. Read about how we use cookies in our Privacy Policy. By browsing this website, you agree to our use of cookies. privacy policy
accept

Your cart

×