K2 Mindbender 89ti W Snow SkisDimensions = 130 89 114 mm Sidecut radius = 13. 1 Meters (164 cm size) Let's face it; most days aren't powder days. And, even when there is new snow, it often gets skied out quickly. That's the reality that makes the Mindbender 89Ti W such a great ski to choose. It's built with the same Titanal Y Beam construction and All Terrain Rocker profile as its wider Mindbender siblings, but the 89Ti W stands out because of its super versatile waist width.