SBC Flat Top Piston Set 4.040 Bore -7cc

KB Series Hypereutectic 390 Alloy with 16% Silicon Pistons. These pistons are T-6 heat treated with machining features of next generation forgings. They offer advantages in compression restricted classes due to lower conductivity and reflective piston top, which lowers oil temperatures and reduces combustion heat and pressure loss. Tight suggested clearances ensure quiet operation and reduced oil consumption. Lockrings and pins are included. Sets of 8. Features: CNC machined pin bores, Diamond Finished Skirts, Machined in Oil Returns, Accumulator Groove for compression ring seal, Fully Machined head and valve reliefs, Mini Grooves to reduce scuffing if overheated, Triple Spiral Lock Rings. Applications: High Performance - Marine - Drag - Circle Track - Towing