High Back Clamshell Seating System


  • Used on the Dynamique, Monique and Pique.

    We invested in a closed injection process and our seats are now molded from specialized fiberglass mats with polypropylene cores. This state of the art technique lets us craft the flex pattern of each size and ensure a uniform thickness across all of our seats. Our fiberglass offering is substantially stiffer, skis superior, and fits better! Our clamshell seats have an adjustable back angle which is ideal for sit skis with chairlift loading systems, programs who fit many different skiers, and individuals dialing in their skiing.

    Sold here is our High Back offering. At 22" tall from the seat bottom, the High Back provides additional support for those who need it, while a relatively flatter back profile allows those who don't need it to achieve separation without the sides digging into their ribs. It is a program conscious shape that allows one seat to better serve a wider range of individuals. The High Back has chest strap mounting provisions and includes a Limiter. The Limiter is a Velcro strap that ensures the seat back stays rigid when users lean forwards. When used with a Chest Strap, the Limiter allows these skiers to pressure the tip of the ski like never before with an adjustable seat. The Limiter also provides a "set and forget" way to remember where the seat back angle was.

    Every seat bottom comes pre-drilled for mounting to our sit skis. While predrilled for our sit skis, this is a performance seating system that can also be fitted to other manufacturers.

    Note: 2015 to 2017 model year Dynamique's require a Seat Mounting Standardization Kit for use with our Fiberglass Clamshell Seating System. These skis had serial numbers DY4.5 and DY4.6 and had Seat Pivots with 8" wide rear mounting hole provisions.
  • The Clamshell Seating System comes with a variety of choices to accommodate a wide range of ability levels and unique customer needs. Below we provide insight and recommendations to help with these choices.  

    Every seat comes finished with M2 ratcheting Padded Strap Sets at the waist and thighs, Nylon assist handles at the sides, and a pull back strap. The back angle is adjustable with M2 Ladder Straps.

      Seat Size

      • We measure seat size by the shell width at the hips. This measurement takes a thin liner or padding into account.

      Chest Strap

      • The Basic Chest Strap is an add on for the High Back. It can be adjusted up and down two inches in height to better match a skier's needs. 
      • We are working on a Deluxe Chest Strap. If you have feedback of what you would like to see in this offering, please contact us.
      • All High Back offerings come with a Limiter Strap regardless of Chest Strap choice.

      Seat Insert

      • The Seat Insert is is recommended for programs and new sit skiers. It is designed to add a quick fit, comfort, and stability to the Clamshell Seating System. The insert has a supportive EVA foam core with a durable, anti-glide, PVC and polyester cover.
      • A Seat Insert is not necessary for individuals who will be pursuing more customized fitment solutions on their own.
      Sit Ski Type and Included Setup
      • The Clamshell Seating System comes predrilled with 6" wide rear holes, 8" wide front holes and two center holes. These holes can be used as a center line reference for other sit ski types not listed here. Choose this option for the Pique. The Pique is directly swappable and does not require a bracket, etc.
      • The Dynamique and Monique have an Adjustable Dump Bracket on mounted on each seat to facilitate swapping seats from frame to frame without wrenches and loose nuts.
      • KBG Sit Skis use an Adapter Bracket. The Adapter Bracket utilizes the rear mounting holes of our seats to center and align the seat on the frame. Just set the dump angle and drill two holes for it up front.
      • For Nissin Mono Ski, we will custom drill your seat bottom with a jig to fit their frame. We only offer the standard position. Users who want 1" forward, etc. please select "Other" to custom drill on your own.
      • For Dynaccess Hydra, we will custom drill your seat bottom with a jig to fit their frame. We only offer the standard frame. This may not fit users with custom angle wedges.


    Related Items

    Get the latest news from ET!