WTB Trail Boss 27.5" TCS Light Tubeless Tire (Fast Rolling) (27.5 x 2.25)

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This is the WTB Trail Boss 27.5" TCS Light Tubeless Tire, in Fast Rolling compound. The Trail Boss combines a rounded tire profile and staggered, supported side knobs, with tightly spaced - blocky lugs to create an incredibly versatile tire that is at home on both hardpack and loam. The closely spaced center lugs keep the tire rolling fast on hardpack, while the height and small size allows the lugs to dig in and grip in soft and damp conditions...whether accelerating or braking. The staggered and siped side lugs provide plenty of working edges for predicable grip when you lay the bike over and help keep the bike planted in corners and off camber sections. These features make the Trail Boss a great choice for trail riders of all levels, as well as enduro racing where speed and rolling efficiency is critical.

The Trail Boss TCS is available in multiple variations of casing and compound. The "Light" lightweight casing is for riders that want a lighter tire, while the "Tough" enduro casing uses two layers of casing material for added protection, and is for those who don't mind spinning a little extra weight. Dual DNA "Fast Rolling" rubber compound combines a harder center tread with softer side lugs, to deliver a balance of rolling resistance and cornering grip. 


  • Aggressive, yet fast-rolling tire with open tread and larger transition/outer lugs
  • TCS tubeless compatible system with folding UST bead
  • Dual DNA "Fast Rolling" rubber compound
  • "Lightweight" casing

XC / Trail / All Mountain
Conditions: Dry to Damp / Hardpack to Loam
Weight: 800g
Compound: Dual DNA - Fast Rolling
Casing: Light
Bead: TCS

This product was added to our catalog on December 16, 2014.

esteban ronquillo
Verified Owner
Tuesday, Feb 24 2015 (about a year ago)
WTB Trail Boss 27.5" TCS Light Tubeless Tire (Fast Rolling) (27.5 x 2.25)
Its not the lightest rear tire, and was a little heavier than WTB's specs, but has a great balance of speed and grip on hardpack/loose over hardpack/rocky trails. Paired it with a TCS Light/Fast Vigilante front tire and so far Im really happy with the combo. I would recommend it to anyone who wants a fast, all mountain/techy trail tire combo that pedals well.