Wiseco-Pro Tru PTS503A6 Forged Flat-Top Pistons and Rings for Small Block Chevy, 4.060-Inch Bore

Upgrade your Small Block Chevy engine with the Wiseco-Pro Tru PTS503A6 piston and ring kit, engineered for dependable performance in demanding street and performance applications. This forged flat-top piston set is designed for a 23-degree cylinder head configuration and a 4.060-inch bore, providing a precise fit and consistent operation when paired with compatible engine components.
The flat-top design features a minus 5.00 cc volume to help support accurate compression-ratio planning and efficient combustion chamber compatibility. A 1.560-inch compression height is suited for engine builds requiring a carefully matched piston-to-deck relationship. The kit includes piston rings with 1/16-inch, 1/16-inch, and 3/16-inch groove sizes for reliable sealing and oil control when properly installed and gapped according to the engine builder’s specifications.
Built by Wiseco-Pro Tru, the PTS503A6 combines forged piston construction with application-specific dimensions for Small Block Chevy engines. The included piston and ring components are intended for professional installation, and all supporting clearances, compression ratio calculations, ring end gaps, and rotating assembly specifications should be verified before assembly. Use this kit when replacing worn components or building a performance-oriented SBC engine around a 4.060-inch bore.
Wiseco-Pro Tru PTS503A6 is supplied as a piston and ring kit for compatible Small Block Chevy applications. Confirm cylinder bore size, connecting rod and crankshaft compatibility, compression height requirements, cylinder head angle, and ring groove specifications before ordering or installation.

Features:

• Brand: Wiseco-Pro Tru

• Part Number: PTS503A6

• Application: Small Block Chevy

• Piston Type: Forged flat-top

• Cylinder Head Configuration: 23-degree

• Bore Size: 4.060 inches

• Compression Height: 1.560 inches

• Piston Volume: Minus 5.00 cc

• Ring Groove Sizes: 1/16 inch, 1/16 inch, and 3/16 inch

• Kit Contents: Pistons and rings