KCNC K-type RD2 chainset review£274.99

Lightweight chainset

BikeRadar score3/5

KCNC’S K-type RD2 cranks are real eye-catchers, with extensively machined arms, further lightened by twin cavities running along their length.

The search for light weight also extends to the scandium alloy axle whose neatly splined ends are held in place by extra-long crank bolts for extra durability.

Stainless steel bearings spin freely in aluminium BB-cups and feel wonderfully smooth at first, though ours developed play after 100km that the adjustment system couldn’t remove. All this shaving and saving of weight has left the RD2 a little flexible compared to Shimano’s top-end crank sets, but for fast-paced TT-riding, flexibility was never a cause for concern.

Shifting from the KCNC chainrings was good, but there was a rhythm-breaking delay as the chain scrabbled for purchase during rushed shifts.

At 660g (with 68mm threaded BB) these are a good way to slice weight off your drivetrain, if that’s a priority.

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: 45
  • 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 than 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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