The Wiseco 6398LX7 Professional Series forged racing piston is engineered for serious Chevrolet LS performance builds requiring dependable strength, precise fitment, and durable operation under heavy to severe-duty conditions. Designed with a 4.070-inch bore, 1.3045-inch compression height, and 0.927-inch wrist pin diameter, this piston is supplied individually with premium rings for a complete, performance-focused installation solution.
Wiseco manufactures this Professional Series piston in the USA from high-strength 2618 aluminum, providing improved tensile strength for demanding racing and performance applications. The fully machined crown supports accurate combustion chamber configuration, while precision ring grooves, an anti-detonation groove, and additional ring-sealing features help promote consistent compression and oil control. Forced pin oiling further supports wrist pin durability during high-load operation.
An ArmorGlide skirt coating helps resist seizure, reduce friction, and minimize operating noise. The Wiseco 6398LX7 is designed for builders who need race-proven piston technology and premium materials for Chevrolet LS applications. It fits select 1998–2002 Chevrolet Camaro and Pontiac Firebird models. This product is not California Air Resources Board approved and may require acknowledgment before purchase.
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