Specialized Fast Trak S-Works LK 2.0 tyre review£29.99

Durable rapid roller

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Sitting in the middle of Specialized’s S-Works performance tyre range is this evolved Low Knob (LK) racer. At 533g it’s light and responsive with a large enough carcass to carry speed through rocks without wincing, and it’s tubeless-ready as standard.

Chopping knob height down by 30 percent from the original Fast Trak liberates rolling speed, although it still gets left behind by the fastest tyres.

The skinny tread ribs use a 65 duro centre/60 duro shoulder which grips well enough in loose or soft conditions but can twist and skate off line suddenly on damp or polished wood and rocks in race situations.

It’s a lot more supple than the cheaper Control and Armadillo puncture-proof versions, but is still stiff and plasticky in feel. This all translates to a slightly clattery, slippery and less than trustworthy feel even if you drop well below the high recommended pressure. 2Bliss tubeless readiness is useful though and it lasts well for such a light tyre.

Guy Kesteven

Freelance Writer, UK
Guy started filling his brain with cycle stats and steaming up bike shop windows back in 1980. He worked the other side of those windows from '89 while getting a degree in “describing broken things covered in mud" (archaeology). Dug historical holes in the ground through the early '90s, then became a pro bike tester in '97. Guy has ridden thousands of bikes and even more components the world over since then and can remember them all in vivid, haunting detail. Can't remember where the car keys are, though.
  • Age: 44
  • Height: 180cm / 5' 11"
  • Weight: 68kg / 150lb
  • Waist: 76cm / 30in
  • Chest: 91cm / 36in
  • Discipline: Strict sadomasochist
  • Preferred Terrain: Technical off-piste singletrack and twisted back roads. Up, down, along — so long as it's faster tfhan the last time he did it he's happy.
  • Current Bikes: An ever changing herd of test machines from Tri bikes to fat bikes and everything in between.
  • Dream Bike: His Nicolai Helius AM custom tandem
  • Beer of Choice: Theakston's Old Peculier (not Peculiar)
  • Location: Yorkshire, UK

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