Halo Mercury 6D road wheelset - in brief

Light wheels that are improved over last year's

BikeRadar score3/5

Halo’s UK designers have been evolving their cost-effective wheels for years and the latest Mercury benefits from feedback from previous tests.

Halo has stuck with a narrow and deep rim that cuts through straight-line drag situations with a clean, efficient feel.

The wheels' steering is slightly stubborn at higher speeds and the skinny tyre footprint leaves them feeling sharp on rough sections, though an extra four spokes in the front makes them much more obedient and consistent in corners than the previous model.

There’s still some softness in the rear if you’re sprinting out of the saddle, but they’re light for the money, which makes them a lively upgrade for lighter racers

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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