With roots tracing back to 1912 and over 70 years crafting pistons, JE Pistons (Jahns Engineering) stands at the forefront of the forged‑piston market—serving NASCAR, NHRA, road racing, off‑road, sport‑compact, and powersports applications. All engineering, forging, CNC machining, and finishing is done in-house at U.S. facilities—including forging from 2618 alloy, CNC crown shaping, ring‑land milling, pin‑boss construction, and proprietary coatings.

JE offers a massive catalog of shelf-stock piston kits—from LS, Big‑Block Chevy, Subaru EJ, Hondas to Harley’s M8—plus full custom pistons in under two weeks. Innovations like Forged Side Relief (FSR), Aligned Grain Flow Technology (AGFT), accumulator grooves, and skirt coatings improve strength, reduce friction, and enhance durability. Enthusiasts and builders praise JE for “excellent quality,” lightweight consistency, and dependable performance across boosted, high‑RPM, and race builds. 

Backed by ISO‑certified precision and racing pedigree, JE Pistons delivers premium durability and precision for serious engine builds.