KCNC K3 XC crankset review

Ultra light XC cranks

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KCNC’s cross-country cranks are super-light but stiffness suffers, shifting is slightly slow and careful assembly is essential.

The hollow, CNC machined arms bolt on to a separate splined scandium alloy axle with long self-extracting bolts. Generous greasing is essential to avoid creaking, and correct micro spacer use is vital to stop the bearings and external shield seals being displaced when tightened. The distinctive K3 Cobweb rings sit on a spline-attached four-arm spider with 38/24, 38/26 and 40/26t options, and the whole set-up is lighter than most single-ringers.

There’s noticeable flex in the cranks when you’re giving them full gas though, and the upshift between rings needs nursing more than the Shimano benchmark.

This article was originally published in Mountain Biking UK magazine, available on Apple Newsstand and Zinio.

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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