SBF FT Piston Set w/TWH 4.125 Bore -3.8cc

The SBF FT Piston Set w/TWH 4.125 Bore -3.8cc from Race Tec Pistons is a complete forged piston solution engineered for Small Block Ford engines requiring precision performance and durability. This eight-piece piston set is designed for builders and enthusiasts who demand reliable compression control and consistent combustion characteristics across all cylinders. Whether you're assembling a street engine, performance build, or restoration project, these flat-top pistons deliver the engineering foundation necessary for optimal engine operation.

Manufactured using forged construction, the SBF FT Piston Set features a 4.125-inch bore diameter with a flat-top crown geometry that reduces compression volume to a precise -3.8cc specification. The Twisted Wedge (TWH) design promotes efficient combustion chamber flow dynamics and flame propagation, while the 1.5 x 1.5 x 3.0 mm ring groove configuration ensures proper ring seal and oil control across the full operating temperature range. The flat-top profile minimizes clearance requirements and allows for tighter deck heights, making these pistons suitable for both stock and mildly modified Small Block Ford platforms where compression ratio optimization matters.

This piston set is ideal for Small Block Ford 221, 255, 289, and 302 cubic-inch engines where factory or aftermarket cylinder head combinations benefit from negative dome geometry. Proper installation requires careful piston-to-bore clearance verification and compatible connecting rod selection—consultation with your engine builder is recommended to confirm ring end gap and deck clearance specifications. The complete eight-piston set weighs 12.39 lbs and arrives ready for assembly into your rebuild or performance engine project.