WISECO-PRO TRU PTS531A3 Pro Tru Street Forged Flat-Top Piston and Ring Set for Mopar RB-Series, 4.350-Inch Bore

Build a strong, reliable Mopar RB-Series engine with the WISECO-PRO TRU PTS531A3 Pro Tru Street Series piston and ring set. Designed for performance street applications, this forged flat-top piston kit combines durable construction with a practical compression profile for engine builders seeking dependable performance and consistent operation.

Each piston is engineered for a 4.350-inch bore and features a 2.050-inch compression height with a -4.00 cc dish volume. The flat-top design supports flexible compression-ratio combinations, making this set suitable for a variety of naturally aspirated or performance-oriented Mopar RB-Series builds. The forged construction is designed to withstand the increased cylinder pressures and operating demands associated with high-performance use.

The included rings fit 1/16-inch, 1/16-inch, and 3/16-inch ring grooves for effective sealing and oil control when properly installed and matched to the engine build. As part of the Pro Tru Street Series, the WISECO-PRO TRU PTS531A3 kit is intended to provide a balanced combination of street durability, performance capability, and fitment-focused design. Always verify crankshaft, connecting rod, deck height, compression ratio, and cylinder specifications before installation.

Brand: WISECO-PRO TRU
Part Number: PTS531A3
Application: Mopar RB-Series engines
Kit Contents: Forged flat-top pistons with rings
Installation Note: Professional installation and final clearance verification are recommended.

Features:

• Forged construction for dependable strength in performance street applications
• Flat-top piston design with -4.00 cc dish volume
• Fits a 4.350-inch cylinder bore
• 2.050-inch compression height
• 1/16-inch, 1/16-inch, and 3/16-inch ring grooves
• Designed for Mopar RB-Series engine builds
• Includes piston rings for complete installation