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Bontrager Gnarwhal Fat Bike - 27.5"

Bontrager Gnarwhal Fat Bike - 27.5"
  • Color: Black
Color: Black
Size: 27.5 x 4.50
Please select options Unavailable


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.

Easy install of available Bontrager Tire Studs with Bontrager Tire Stud Tool

Studs sold separately.

Bontrager's Inner Strength Casing is made of lightweight nylon inserts that provide strong, supple sidewall protection for added tire durability.

Tubeless Rim/Tire Cross-Section

Going tubeless allows you to run lower tire pressures without the added weight of a tube. Lower tire pressure has many benefits, including greater traction, lower rolling resistance over rough surfaces, and decreased risk of a puncture-related flat.

Tubeless-ready rims and tires are parts of a complete system that eliminate the need for tubes by creating an airtight chamber between the rim and tire. Liquid sealant is added to the chamber to fill small punctures and maintain air pressure while you ride.

UST (Universal Standard for Tubeless) is a specific type of tubeless system that dictates the shape of the rim and tire bead. UST rims should be paired with UST-specific tires for best results.


Size 27.5 x 4.5"
Category Mountain
Recommended Use Fatbike
Recommended Install Front or Rear
Bead Type Folding
Tubeless Ready Yes
Weight (single, g) 1515g
Tire Type Tubeless Ready (TLR) / Clincher
Pressure Range 20 PSI Max
Protection Inner Strength

* Subject to change without notice.


Part Numbers

Option UPC MPN Store SKU
Black / 27.5 x 4.50 601842029350 579187 TIR556969007