FSA K-Force Light STC BB30 chainset£599.95

Carbon crankset with four-arm spider

BikeRadar score3.5/5

FSA’s latest super-light hollow carbon crank arms now come in a universal four-arm spider configuration for habitual chainring changers – most of the K-Force Light range uses the company’s three-arm 386 chainset design that, while stiffer, is actually 50g heavier than the impressively light 576g conventional chainring setup here. 

This one lets you choose replacement rings from SRAM, Shimano, Middleburn, Praxis and so on. There’s nothing wrong with the FSA rings, though, with compact 39/27T or 42/27T ring and bashguard options. Shifting is fine even if you’re digging deep on a climb, too. Underfoot stiffness from the broad hollow carbon arms and oversized alloy BB30 splined axle is more than good enough for the race brigade. 

The captured 10mm Hex bolt makes installation easy, but make sure you take up any bearing slack with the preload collar rather than accidentally crushing them when installing. Apart from that, we’ve had great long-term results with FSA’s ceramic bearings in BB30 formats.

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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