FSA SL-K 386 BB30 mountain bike crankset review£519.95

Carbon/alloy hybrid

BikeRadar score2.5/5

FSA's SL-K crankset sits between their alloy Afterburner and flagship carbon fibre K-Force Light, and it’s a good looking, carbon/alloy hybrid with lots of options.

The broad unidirectional carbon arms are wrapped around an alloy core, which also carries the pedal threads. The BB30 version then gets a big fat alloy axle through the centre for stiffness, although the chromoly-axled versions are solid underfoot too.

There are red, blue or white decal options to match your bike and they last better cosmetically over time than most black alloy sets, though we’re still talking weeks rather than months. Chainrings last okay and while they were shocking at first, FSA’s bottom brackets are now on-par for longevity. The SK-K isn't light given the cost, though.

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

Related Articles

Back to top