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Go slashing through the snow

When bite and traction are required above all else, this tire keeps you moving. Roll through the roughest terrain and deepest snow with the stud-ready, aggressively treaded Gnarwhal. Available to fit both 26 and 27.5 wheels, this versatile tire can be ridden with or without studs to add traction to even the slipperiest winter riding conditions.

Product details

  1. A fat bike tire that excels in snow, ice, and slippery terrain
  2. Aggressive and siped tread provides traction in even the slickest conditions
  3. Tubeless Ready (TLR) for easy tubeless setup and puncture protection
  4. Inner Strength casing is lightweight sidewall protection that's supple and strong
  5. Studdable design allows for added traction in icy conditions
  6. Easy install of available Bontrager Tire Studs with Bontrager Tire Stud Tool
  7. 27.5" tires can accept 216 studs, 26" tires can accept 160 studs

How To: Fix a Flat Bike Tire

Flat? Fixed. Our simple how-to video will show you how to get back on two wheels in no time flat.

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Size 26" x 3.8" 27.5" x 3.8" 27.5" x 4.5"
Diameter 26" 27.5" 27.5"
Width 3.8" 3.8" 4.5"
TPI 120 TPI 120 TPI 120 TPI
Compound 60a 62a/60a 62a/60a
Bead Folding Folding Folding
Type Tubeless Ready (TLR)/Clincher Tubeless Ready (TLR)/Clincher Tubeless Ready (TLR)/Clincher
Max pressure 25psi 20psi 20psi
ETRTO 97-559 97-584 114-584
Puncture protection Inner Strength Inner Strength Inner Strength
Studdable No No No
Weight 1275g 1395g 1515g
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Weights are based off Trek pre-production products at time of publication. Weights may vary in final production.

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