Max Stability Wide profile, massive 54g back weighting and 40% larger graphite composite for extreme twist resistance to off centre strikes and a straight, predictable ball flight. Extended CORTECH CHAMBER A dense stainless steel weight with elastomeric TPU - taking stress from the clubface and creating an additional energy source. Lengthened in the ST MAX and shifted closer to the clubface to maintain ball speeds across a wider portion of the clubface. New BETA Rich TI LFS A new lighter, faster face material - measuring 9% higher in tensile strength (compared to SAT2041) for a complex multi-thickness face geometry. First introduced on Mizuno's 2024 Tour driver the ST-G 440cc. Longer 45 3/4 Inch Shaft For Faster Clubhead Speeds Possible through the additional stability and off centre performance of the ST MAX head. Quick Switch Hosel 4 degrees of adjustability.