Wiseco-Pro Tru PTS503A3 SBC Flat Top Forged Piston and Ring Set, 4.030-Inch Bore, -5cc

Upgrade your Small Block Chevy engine with the Wiseco-Pro Tru PTS503A3 piston and ring set. Designed for 23-degree cylinder heads, this forged flat top piston kit supports performance-focused engine builds requiring dependable strength, consistent fitment, and efficient combustion characteristics. The flat top design has a nominal -5.00 cc volume and is intended for applications using a 4.030-inch cylinder bore.
The Wiseco-Pro Tru PTS503A3 features a 1.560-inch compression height and is engineered for compatible Small Block Chevy configurations. Its forged construction provides durable performance under demanding operating conditions, while the flat top profile offers a straightforward solution for builders selecting pistons for naturally aspirated or other compatible performance applications. Always verify block preparation, connecting rod specifications, deck height, and intended compression ratio before installation.
This kit includes piston and ring components with 1/16-inch, 1/16-inch, and 3/16-inch ring grooves. The ring package is designed to support effective oil control and combustion sealing when properly fitted and installed. The Wiseco-Pro Tru brand and PTS503A3 part number provide a reliable reference for engine builders and technicians seeking replacement or performance piston components for a Small Block Chevy project. Professional installation, precise measurements, and adherence to the engine builder’s clearance recommendations are required for proper results.

Features:

• Brand: Wiseco-Pro Tru

• Part Number: PTS503A3

• Application: Small Block Chevy

• Piston Type: Forged flat top

• Cylinder Head Compatibility: 23-degree configuration

• Bore Size: 4.030 inches

• Compression Height: 1.560 inches

• Piston Volume: -5.00 cc

• Ring Grooves: 1/16 inch, 1/16 inch, and 3/16 inch

• Kit Contents: Piston and ring set