Syncros FL25 mountain bike wheelset review£1,449.98

Hand-built, lightweight carbon hoops

BikeRadar score3.5/5

Syncros’s carbon rims have been around for a while and are proving reliably tough despite being very light. As you’d hope for the price, they’re noticeably tighter-tracking than similar weight alloy wheels. 

Pickup is average but acceleration is excellent and they instantly enhance the agility of any bike you stick them in. The bearings and freehub have been fine on our long-term sets.

The 20mm internal rim diameter supports the medium-sized tyres that suit their function fine. The quick-release/15mm front hub and QR-only rear axle options will also suit most potential users. They’re not tubeless-compatible and their rim shape does make tyre fitting and removal a fight.

This article was originally published in What Mountain Bike 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: 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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