Wiseco 6443RX200 Chevy LS Shelf Stock Forged Piston -23cc R/Dome 4.200 in. Bore

The Wiseco 6443RX200 is a Professional Series shelf-stock forged piston engineered for the Chevrolet LS platform. Featuring a -23cc reverse dome (R/Dome) crown and a 4.200 in. bore, this single replacement piston is purpose-built for serious engine builders who demand custom-level performance in a ready-to-ship format.

Key Features:

• 2618 aluminum forging — engineered, forged, and machined in the USA for superior tensile strength and durability under high-stress performance applications
• ArmorGlide® skirt coating — reduces operating friction, resists seizure, minimizes cylinder and skirt wear, and contributes to quieter operation
• -23cc R/Dome crown — reverse dome profile allows precise compression ratio tuning for boosted, high-compression, and power-adder builds
• 4.200 in. bore diameter — sized for stroked and overbored LS applications
• 0.927 in. wrist pin diameter — standard LS pin sizing for broad compatibility
• Fully machined crown features — precision-crafted for consistent combustion geometry
• Precision ring grooves with anti-detonation groove — improves ring seal and detonation resistance under extreme cylinder pressures
• Forced pin oiling — ensures continuous lubrication to the wrist pin under sustained high-RPM operation
• Shelf stock availability — pre-manufactured to Wiseco's Professional Series standards for faster build timelines

Wiseco Professional Series pistons are no-compromise components designed and built to withstand heavy to severe duty race and performance applications. Whether building a naturally aspirated stroker, a supercharged street car, or a dedicated track engine, the 6443RX200 delivers the forged strength and precision machining that Wiseco is known for. Sold individually.