Wiseco 6448LX3903 Forged Piston Chevy LS 3.903 in Bore 5cc Dome 1.110 in CH

The Wiseco 6448LX3903 is a Professional Series shelf-stock forged piston designed for Chevrolet LS-based engines. Featuring a 3.903-inch bore, 1.110-inch compression height, and a 5cc dome crown, this single piston is engineered for high-performance and race builds that demand precision fitment and exceptional strength.

Wiseco's Professional Series pistons are forged and machined in the USA from 2618 high-strength aluminum alloy, delivering superior tensile strength and thermal resilience under extreme operating conditions. The fully machined dome crown features precision ring grooves and an anti-detonation groove for improved ring seal and detonation resistance.

Key Features:

• Bore: 3.903 in.
• Compression Height: 1.110 in.
• Pin Diameter: 0.927 in.
• Crown: 5cc Dome
• Material: 2618 forged aluminum alloy — engineered and machined in the USA
• ArmorGlide® Skirt Coating — seizure resistant, reduces friction, and quieter operation
• Fully machined crown with precision ring grooves and anti-detonation groove
• Forced pin oiling for effective lubrication under severe-duty conditions
• Shelf stock single piston — sold individually

Wiseco's Professional Series LS pistons are purpose-built for heavy to severe-duty race applications, offering custom-level performance in a ready-to-ship shelf-stock format. Manufactured at Wiseco's Mentor, Ohio facility, these pistons represent decades of motorsports engineering expertise trusted by serious engine builders.