Wiseco-Pro Tru PTS507A3 SBC Flat-Top Forged Piston and Ring Kit, 4.155-Inch Bore, -5cc

The Wiseco-Pro Tru PTS507A3 piston and ring kit is designed for Small Block Chevy applications requiring dependable forged performance and precise fitment. Each piston features a 23-degree flat-top design with a -5.00 cc volume, making it well suited for engine combinations that require a controlled compression ratio and efficient combustion chamber compatibility. The kit is engineered for a 4.155-inch bore and includes piston rings for a complete installation solution.
The forged construction provides the strength and durability needed for high-performance street, race, and competition engines. A 1.560-inch compression height supports proper piston-to-deck and rotating assembly setup when matched with the appropriate connecting rods, crankshaft, and block configuration. The flat-top crown offers a straightforward design for builders seeking predictable compression characteristics and broad application flexibility.
The PTS507A3 uses 1/16-inch, 1/16-inch, and 3/16-inch ring grooves for compatible compression and oil ring packages. This Wiseco-Pro Tru kit is intended for carefully measured and professionally prepared Small Block Chevy builds. Always verify bore size, compression height, ring groove specifications, piston-to-wall clearance, valve relief requirements, and final compression ratio before assembly.

Features:

• Brand: Wiseco-Pro Tru

• Part Number: PTS507A3

• Application: Small Block Chevy

• Construction: Forged piston design for high-performance engine applications

• Piston Style: 23-degree flat-top crown

• Bore Size: 4.155 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