FSA Gravity Light crankset£199.95

Diet downhill cranks

BikeRadar score4.5/5

FSA’s Gravity Light crankset is a racer’s dream, with World Championship stripes to back it up. At under a kilo, it really is a serious weight saver for race bikes. It certainly hasn’t hindered Sam Hill in his past couple of seasons.

Despite skinny looks, the hollow forged crank arms feel stiff enough underfoot to sting your feet through rocky sections. Steel pedal inserts, axle and chainring bolts keep everything securely connected too.

The single row bearings and flat arm profile mean they don’t have the strength for too many crashes or super big drops (which is where the standard Gravity comes in). They're well priced too.

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
  • Chest: 91cm / 36in
  • Waist: 76cm / 30in
  • 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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