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Item #: 332352832

The Sonic delivers comfort and ease of use when you’re ready to ditch the rental gear and really begin focusing on progression. The EVA foot bed cushions your feet and absorbs bumpy terrain, and the Pro-Fusion™ chassis is strong, lightweight and designed to last.


  • Pro-Fusion Chassis - simple, tough, lightweight and proven materials shaped in a optimized, powerful geometry the Pro-Fusion is the go-to standard of K2's binding line. On-board tool-less power ramp, toe strap mount adjustments and multiple position ankle straps mounts dial in fit and power transfer
  • Performance Highback - Medium flexing polycarbonate highback. Super durable and strong for all riding types
  • Formed EVA Shockpads, Adjustable power ramp - help dampen vibration and keep things comfortable for all day shredding
  • Caddy Ankle Strap - Fully contoured 3D shape fits the boot perfectly, Narrower waist profile for freer flex, EVA padding for comfort and durability, Tool-Less Cam lock centering
  • Perfect Fit Toe Strap - innovative hinged design fits any boot toe shape, holds well and sits in a lower profile configuration.
  • MC Disc - Mounts on 4-hole and is channel compatible. Featuring Power-hold washers for bomber locking power


  • MFG Part Number: B170401302


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