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Wrathchild Fat


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From loose snow to icy freeze-thaw and everything in between, Wrathchild craves the best and worst winter conditions.

  • XL Concave Studs
  • Deep lugs provide accelerating, braking, and cornering traction
  • Open tread pattern sheds snow
  • We design 45NRTH tires for extreme winter cycling applications. We do not recommend this product be used with power assist bikes as the additional torque and system weight can lead to pre-mature casing wear and stud loss.
120tpi Studded
26 x 4.6" or 27.5 x 4.5"
View Tire Geometry Chart
224 or 252 XL Concave Studs
Tubeless Ready Folding
65 - 102mm wide rims

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Audio: (dramatic music) Video: A man rides a fat bike quickly through a sunny, wintery, and wooded environment. "45NRTH Wrathchild" text is overlaid as he rides and kicks up snow. Audio: Wrathchild is our ultimate traction fat bike tire for soft loose snow. It’s tall, deep plugs give maximum traction, when accelerating, braking, and cornering. Video: While a Wrathchild tire is in view, the shot zooms in on its tread pattern. “Tall, Deep Lugs: For maximum grip.” text is shown alongside a highlighted 3-2-4 center lug pattern. Audio: The wide spacing between the lugs sheds snow so the tire can dig into firmer terrain underneath. Video: In the same view, “Wide-Spaced Lugs: Sheds snow to maintain traction.” text is shown alongside a pointer to the wide spacing between lug rows in the central pattern. Audio: The high volume 4.6 inch version, also offers up a lot of surface area for flotation on soft terrain. Video: “High-Volume: Offers more surface area for flotation.” text is shown alongside a 4.6” measurement of the tire width. Audio: Wrathchild’s XL concave studs, give the rider fantastic bite on icy surfaces or shoulder season melt-free cycle rails. Wrathchild is available in the following sizes. Video: “XL Concave Studs: Superior traction on ice.” text is shown alongside a highlighted view of the many studded lugs. Audio: Wrathchild is available in the following sizes. Video: The view zooms out and “26 x 4.6”: 120tpi Folding Bead, Tubeless Ready, (224 Concave Studs); 27.5 x 3.0”: 120TPI Folding Bead, Tubeless Ready, (252 XL Concave Studs); 29 x 2.6”: 120TPI Folding Bead, Tubeless Ready, (252 XL Concave Studs)” text is shown to provide sizes. Audio: (dramatic music) Video: 45NRTH logo and “” text is shown, along with Instagram, Facebook, and Twitter logos.


  • Acceleration Traction
  • Braking Traction
  • Cornering Traction
  • Rolling Efficiency
  • Flotation
  • = Icy Conditions
45NRTH Wrathchild Fat Studded Tire - black - three quarter view with sidewall and tread detail