Tacx Sirius turbo trainer review

Smooth and quiet

BikeRadar score4/5Find prices on Bicycle Blue Book

Tacx's Sirius trainer isn’t for wrestle maniacs but gives an impressively natural, mobile feel combined with useful decimal resistance. With a pre-assembled frame, square-ended quick-release skewer and big quick-clamping paddle, it’s quick to set up. 

The narrow-fronted cantilevered frame flexes and can stumble sideways if you chuck the bike around too much, but calm it down slightly and the bounce gives a surprisingly natural ride feel that smoothes out your pedal stroke in most situations.

The urethane roller is reasonably smooth and quiet, and the chunky 2kg flywheel reduces choppiness without causing wheel slip. The 10-point lever mounts on the handlebars and gives smoothly graduated resistance steps for subtle training tweaking. 

This article was originally published in Triathlon Plus magazine, available on 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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