Audio: (dramatic music) Video: A man rides a fat bike quickly through a sunny, wintery, and wooded environment. "45NRTH Dunderbeist" text is overlaid as he rides and kicks up snow. Audio: Flowbeist and Dunderbeist are front and rear specific, aggressive, fat bike tires. They’re best used as a pair and their high void and deep lug design provides outstanding traction in the snow. Video: Narrating man stands at a desk with a 45NRTH logo behind him. Audio: Dunderbeist is the rear specific tire, and it’s designed around accelerating, braking, and cornering. Video: Rotating Dunderbeist tire is in view. Audio: Tall lugs that face forward give forward bite, and dig into loose snow as you accelerate. Video: View zooms in and “Tall Lugs: Dig into loose snow.” text is shown to highlight tall center lugs that face forward with a slight ramp. Audio: Backward facing lugs, give the rider grip when braking. Video: “Backward Facing Lugs: Grip when braking.” text is shown to highlight the backward facing side of the same tall center lugs. Audio: The tall side lugs keep the rear of the bike planted through corners. Video: “Tall Side Lugs: Provide traction when cornering.” text is shown alongside a highlighted raised side lug near the edge of the tread. Audio: Both the Flowbeist and Dunderbeist, use a dual compound rubber with softer rubber on the sides, for more grip when cornering. Video: “Dual Compound Rubber: More grip when cornering.” text is shown to highlight the side lug material. Audio: We offer Flowbeist and Dunderbeist in these sizes. Video: View zooms out and “26 x 4.6”: 120TPI Folding Bead” text is shown for sizing. Audio: (dramatic music) Video: 45NRTH logo and “45nrth.com” text is shown, along with Instagram, Facebook, and Twitter logos.