JE Pistons’ SRP Pro Piston line features advanced 4032 FSR (forged side relief) forgings to increase strength while a high-quality narrow wrist pin reduces weight to offer the best of both worlds. Accumulator grooves and 1.2/1.5/3.0 mm Pro Seal Premium Piston Rings improve piston ring seal.

We developed the SRP Professional Series Pistons over the course of an entire year using 3D modeling with several revisions being tested using FEA (finite element analysis). Unlike other manufacturers, our pistons are manufactured from solid pucks of aluminum right here in America for dyno testing in real engines prior to being finalized.

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