Custom Forged Piston Set for DOHC VTEC H22/F20B/H23 VTEC

These custom pistons are built to order by KS Tuned, offering compatibility with a wide range of H and F series engines, specifically when using DOHC VTEC H22/F20B/H23 VTEC cylinder heads. Please note that these pistons are not offered for engines with SOHC cylinder heads. Constructed from forged materials, these pistons provide significantly greater toughness and durability than cast pistons. The forging process aligns condensed grain to the part's features, resulting in higher mechanical properties and enhanced resistance to impact and fatigue. Key features include valve pocket designs that allow for maximum flow around the valve, accommodating oversized valves and high-lift cams. Additionally, piston domes are optimized for quench during the compression/combustion cycle to resist detonation and pre-ignition, contributing to longer engine life. Precision is paramount in the design, with machined ring grooves featuring calculated root diameters and axial widths. This ensures excellent surface finish, flatness, maximum ring seal, and minimized blow-by and oil consumption. **Important Compatibility and Sale Information:** * **NOT COMPATIBLE WITH FRM CYLINDER WALLS.** * **ALL SALES ARE FINAL - NO REFUNDS. NO EXCHANGES.** When ordering, please provide the following details in the notes field: block type (sleeved or stock cylinder walls), crankshaft, cylinder head, connecting rod, desired bore size, desired compression ratio, intended fuel, and horsepower goal. A typical lead time for these custom-built pistons is 8-10 weeks.