Awards Editors' Choice Award Top Pick Award   Best Buy Award 
Price $385 List$574.95 at Amazon$830 List$950 List$285 List
Overall Score Sort Icon
81
79
77
68
64
Star Rating
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Pros Uphill and downhill performance, lightweight, good value, efficient transitions, lean adjustersLightweight, fast transitions, responsive, great straps, easy to use bucklesImproved interface, downhill performance, comfortable straps, easy to deploy heel risersBeautiful carbon highback, improved ease of use, tight board connection, convenient forward lean adjusterInexpensive, lightweight, exceptional downhill performance, slightly above-average straps, lean, risers
Cons Heel risers can be challenging to deploy with softer basketsExpensive, might be too stiff for lighter riders, high back catches on heel cup between walk and ride modesExpensive, weight of entire systemExpensive, heavy, snow and ice can complicate transition to ride modeSlider pin is outdated, not the most convenient forward lean adjuster
Bottom Line Performance that keeps your wallet in mindMeticulous engineering to make the good even betterExceptional downhill performance with refined in betweensThe Prime X Carbon is the best and lightest binding from KarakoramFriendly on the wallet while providing decent performance, this tried and true classic is the winner of our Best Buy award
Rating Categories Spark R&D Arc Spark R&D Surge Pro Karakoram Prime-X Prime-X Carbon Spark R&D Blaze TR
Uphill Performance (20%)
8
7
8
6
5
Weight (10%)
9
9
7
7
6
Transitions (30%)
8
8
7
6
6
Downhill Performance (30%)
8
8
8
8
8
Straps Lean Risers (10%)
8
8
9
7
6
Specs Spark R&D Arc Spark R&D Surge Pro Karakoram Prime-X Prime-X Carbon Spark R&D Blaze TR
Measured Weight (pair) 2.8 lbs 2.7 lbs 3.18 lbs 3.16 lbs 3.25 lbs
Compatible systems Spark Pucks, Voile Pucks (Regular or Canted), Burton Channel Pucks, One Binding System, and Ibex Crampons Spark Pucks, Voile Pucks (Regular or Canted), Burton Channel Pucks, One Binding System, and Ibex Crampons Karakoram Splitboard Clips, Prime Crampons Karakoram Splitboard Clips, Prime Crampons Spark Pucks, Voile Pucks (Regular or Canted), Burton Channel Pucks, One Binding System, Sabertooth Crampons, Ibex Crampons
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