Wiseco Pro Tru PTS522A3 BBC Domed Piston and Ring Set, 4.280-Inch Bore, +21 cc

Upgrade a Big Block Chevy engine with the Wiseco Pro Tru PTS522A3 domed piston and ring set, engineered for performance-focused applications requiring a 4.280-inch bore. This kit combines a forged dome piston with compatible piston rings to support reliable operation, efficient combustion, and durable performance under demanding engine conditions. The domed design provides a 21.00 cc positive volume configuration for builders tuning compression and cylinder-head compatibility.
The forged piston construction is designed to provide strength and durability for high-performance engine builds. The 1.270-inch compression height supports proper piston positioning when matched with the appropriate connecting rod, crankshaft, block, and deck configuration. Always verify complete engine specifications before installation to ensure the piston crown, valve reliefs, deck height, and compression ratio meet your intended application.
The included ring set uses 1/16-inch, 1/16-inch, and 3/16-inch ring grooves for balanced sealing and oil control. These rings are intended to complement the piston design and help maintain consistent cylinder pressure when properly fitted, gapped, and installed. The Wiseco Pro Tru PTS522A3 is a practical choice for Big Block Chevy engine builders seeking a matched domed piston and ring package for a performance-oriented rebuild or upgrade.

Features:

• Brand: Wiseco Pro Tru

• Part Number: PTS522A3

• Application: Big Block Chevy engines

• Piston Type: Forged domed piston

• Bore Size: 4.280 inches

• Compression Height: 1.270 inches

• Dome Volume: Plus 21.00 cc

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

• Kit Contents: Piston and compatible ring set

• Intended Use: High-performance engine builds and rebuilds