WISECO-PRO TRU PTS504A3 SBC Flat Top Forged Piston and Ring Set, 4.030-Inch Bore, -5cc

Upgrade your Small Block Chevy engine with the WISECO-PRO TRU PTS504A3 piston and ring set. Designed for 23-degree cylinder heads, this kit includes forged flat-top pistons engineered for dependable performance in high-performance and competition applications. The flat-top crown provides a -5.00 cc volume and supports compression configurations where consistent combustion chamber characteristics are important.
The PTS504A3 pistons are manufactured with a 4.030-inch bore size and a 1.425-inch compression height for precise fitment in compatible Small Block Chevy builds. Their forged construction delivers strength and durability under demanding engine loads, while the piston design supports reliable operation across a wide range of performance setups. Confirm compression height, deck clearance, connecting rod specifications, and cylinder head compatibility before installation.
Each piston is designed for 1/16-inch, 1/16-inch, and 3/16-inch ring grooves and is supplied as part of a matched piston and ring kit. This configuration helps simplify assembly while providing the ring package required for proper sealing when installed with the appropriate cylinder finish and clearances. Professional installation, accurate measurement, and adherence to the engine builder’s recommended tolerances are essential for optimal results.
Whether you are rebuilding a street-performance engine or assembling a dedicated racing application, the WISECO-PRO TRU PTS504A3 offers a purpose-built piston solution for compatible Small Block Chevy engines. Use the part number to verify application details and ensure all components match your intended bore, compression, valve relief, and rotating assembly specifications.

Features:

• Brand: WISECO-PRO TRU

• Part Number: PTS504A3

• Application: Small Block Chevy

• Piston Style: Flat top

• Construction: Forged

• Cylinder Head Compatibility: 23-degree

• Bore Size: 4.030 inches

• Compression Height: 1.425 inches

• Piston Volume: -5.00 cc

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

• Kit Contents: Piston and ring set