Sportsman Racing Products 138735 Forged Flat Top Pistons, 4.040-Inch Bore, -5cc, Small Block Ford, Set of 8

Upgrade your Small Block Ford engine with the Sportsman Racing Products Part Number 138735 forged flat top piston set. Designed for performance-focused engine builds, these pistons feature a 4.040-inch bore and a 1.600-inch compression height to support precise piston-to-deck positioning and dependable operation. The flat top design provides a practical foundation for compression and combustion-chamber configuration based on the rest of your engine combination.
The Sportsman Racing Products 138735 pistons include 1/16-inch, 1/16-inch, and 3/16-inch ring grooves for compatible piston ring installation. With a listed -5.00 cc volume, the piston crown design can help builders calculate compression ratio accurately when selecting cylinder heads, head gaskets, and other rotating assembly components. Forged construction provides the strength and durability needed for demanding street, strip, and competition applications when properly matched to the engine’s specifications.
This set includes eight pistons for Small Block Ford applications. Verify bore size, compression height, ring package, wrist pin compatibility, piston-to-valve clearance, and final compression ratio before installation. Professional engine assembly practices and proper clearances are recommended for reliable performance. Sportsman Racing Products Part Number 138735 is a focused replacement or performance-building solution for Ford-based engines requiring a 4.040-inch bore and flat top forged piston configuration.

Features:

• Brand: Sportsman Racing Products

• Part Number: 138735

• Application: Small Block Ford

• Construction: Forged aluminum

• Piston Style: Flat top

• Bore Size: 4.040 inches

• Compression Height: 1.600 inches

• Piston Volume: -5.00 cc

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

• Quantity: Set of 8