Login

Quantum Max OS blends confidence with maximum forgiveness, powerful speed, and consistent carry — all in an oversized shape designed to help golfers hit it more solid across the face. The Modern 360° Undercut Cavity is designed to deliver faster ball speeds, higher launch, and more forgiveness across the face, thanks to its advanced two-piece design with extreme perimeter weighting and a fully exposed undercut for added flex where golfers need it most. The Progressive Tri-Sole Design promotes cleaner, more consistent contact across the set, with a reengineered sole geometry that adapts from long irons to wedges for smooth turf interaction and efficient speed retention — even on heavy strikes. The Next Generation AI-Optimized Face delivers faster ball speeds and more consistent launch, spin, and dispersion by intelligently shaping the face to match real-world impact patterns and expand the sweet spot. Urethane Microspheres enhance sound and feel at impact by absorbing unwanted vibration, delivering a softer, forged-like sensation in a high-speed game-improvement head. Quantum Max OS is built for higher launch and maximum forgiveness — all in an oversized shape that inspires confidence at address. UPC 197193836001 Flex Stiff Loft 19 Degrees Size Standard Color Silver Pattern Solid Grip Size 4 1/4 inches Grip Type Rubber Head Size Oversized Head Type Cavity Back Brand Name Callaway Style Name Solid Colors Manufacturer Callaway Golf Model Number Quantum Max OS Configuration 4 Iron Material Type Alloy Steel Golf Club Type Iron Golf Club Item Type Name Golf Club Shaft Material Elevate 85 Gram Hand Orientation Right Included Components Golf Club Warranty Description 2 Year Manufacturer Manufacturer Part Number Does Not Apply