Sportsman Racing Products 138089 SBC Forged Flat Top Piston Set, 4.030-Inch Bore, -5cc

Upgrade your Small Block Chevy engine with the Sportsman Racing Products 138089 forged flat top piston set. Designed for performance applications, this set includes eight pistons engineered for a 4.030-inch bore and a 1.425-inch compression height. The flat top design and -5.00 cc volume support precise compression planning for custom engine builds while providing the strength and durability expected from forged components.
The pistons feature 1/16-inch, 1/16-inch, and 3/16-inch ring grooves for compatible piston ring configurations and dependable oil control. Their forged construction is well suited to demanding street, racing, and high-performance applications when matched with the appropriate connecting rods, rings, cylinder preparation, and engine specifications. Verify bore size, deck height, valve clearance, compression ratio, and ring selection before installation.
This Sportsman Racing Products piston set is supplied as a complete set of eight for Small Block Chevy applications. The 138089 part number provides a reliable reference when selecting compatible components for your build. Professional installation and careful measurement are recommended to ensure proper fitment, ring gap, piston-to-wall clearance, and overall engine performance.

Features:

• Forged flat top pistons designed for Small Block Chevy applications

• Set of 8 pistons for complete engine builds or matched replacements

• Compatible with a 4.030-inch cylinder bore

• 1.425-inch compression height for application-specific engine planning

• Flat top design with -5.00 cc volume

• 1/16-inch, 1/16-inch, and 3/16-inch ring grooves

• Sportsman Racing Products part number 138089