Carrillo BF6021-040 Small Block Ford Forged Pistons Bore - 4.040

These pistons feature a dish design with -19.0cc volume, precision-machined for a 4.040" bore diameter.

Key Specifications:

• Bore Size: 4.040 inches
• Stroke: 3.250 inches
• Rod Length: 5.400 inches
• Dish Volume: -19.0cc
• Compression Ratio: 8.5:1 (with 60cc combustion chamber)
• Head Compatibility: All 20-degree heads including TFS Twisted Wedge

Carrillo pistons are manufactured from premium forged aluminum alloy, delivering exceptional strength and durability for high-performance and racing applications. The dish design helps achieve optimal compression ratios while maintaining proper quench characteristics. These pistons are designed to work with 60cc cylinder head combustion chambers to achieve an 8.5:1 compression ratio, making them ideal for forced induction or pump gas street builds.

Carrillo is renowned for producing championship-winning connecting rods and pistons used in professional racing series worldwide. Their precision manufacturing ensures tight tolerances and reliable performance under extreme conditions.