One of the new buzzwords in golf is the term Moment of Inertia or MOI for short. MOI can be very confusing subject to discuss, let alone when we are talking about something with a complicated shape as a golf club. But let’s break MOI down to laymen’s terms in order to make it just a little easier to understand.

Moment of inertia is a measurement of the clubheads ability to resist twisting about a known axis. A higher MOI is supposed to be a strong indicator as to the forgiveness of a clubhead. At impact, the golf ball is not always struck in line with the center of gravity, resulting in the head twisting and consequently consuming energy that could be imparted to the ball. A club with a higher MOI will resist the twisting more so than a lower MOI value.