Wiseco Pro Tru PTS500A4 Small Block Ford Flat Top Forged Piston and Ring Set, 4.040-Inch Bore

Upgrade your Small Block Ford engine with the Wiseco Pro Tru PTS500A4 piston and ring set. Designed for performance-focused engine builds, this kit includes forged flat top pistons engineered for strength, durability, and consistent operation under demanding conditions. The flat top design provides a minus 7.00 cc volume, making it a practical choice for builders managing compression ratio and combustion chamber specifications.
The PTS500A4 set is manufactured for a 4.040-inch cylinder bore and features a 1.600-inch compression height for compatibility with properly matched Small Block Ford applications. Integrated ring grooves accept 1/16-inch, 1/16-inch, and 3/16-inch piston rings, supporting effective oil control and dependable sealing when paired with the correct ring package and engine components. Always verify bore size, deck height, rod length, crankshaft stroke, and piston-to-valve clearance before installation.
Wiseco Pro Tru combines proven piston manufacturing expertise with application-specific design to help deliver reliable performance for street, strip, and competition-oriented builds. The PTS500A4 piston and ring set is supplied as a matched kit for convenient engine assembly and is intended for professional installation and precise measurement during machining and final assembly. Confirm all clearances and supporting components meet the requirements of your specific Small Block Ford engine configuration.

Features:

• Brand: Wiseco Pro Tru

• Part Number: PTS500A4

• Application: Small Block Ford engines

• Piston Design: Forged flat top

• Bore Size: 4.040 inches

• Compression Height: 1.600 inches

• Piston Volume: Minus 7.00 cc

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

• Kit Type: Piston and ring set