New Giro Tyrant helmet: for the progressive mountain biker

Giro Tyrant MTB helmet
The Giro Tyrant helmet is aimed at those who favour sessioning over competition (Image credit: Giro)

The Giro Tyrant helmet has been designed and developed with progressive riders in mind and naturally hinges more around sessioning than racing. As such, form follows function — the Giro Tyrant doubling up as both a stylish and protective lid.

According to Dain Zaffke, Giro Marketing Director,  the Tyrant is made for riders who are more likely to be wearing jeans than a number but are still pushing boundaries with their riding. 

Giro Tyrant helmet visor

Giro Tyrant's adjustable visor keeps your face and eyes protected and can accommodate a broad array of goggle and eye protection styles (Image credit: Giro)

Despite the casual design cues the Giro Tyrant is a pretty sophisticated helmet in terms of all-round protection. Not only does it feature a full-cut design which brings added levels of head coverage, it also benefits from the latest in multi-directional impact protection systems — MIPS Spherical. 

Developed by Giro and MIPS, this new design mimics a ball-and-socket joint, providing several millimetres of rotational movement thanks to two layers of EPS foam. This new system has also significantly improved ventilation thanks to deeper air channels inside the helmet.

Giro Tyrant helmet Roc Loc Air DH Fit system

Giro Tyrant employs the company's Roc Loc Air DH adjustable fit system (Image credit: Giro)

Over and above the enhanced protection levels, the Tyrant is packed with all the details you would expect from Giro. A new Roc Loc Air DH adjustable fit system, quick-dry padding, customisable cheek pads, 14 ventilation slats with internal channelling and an adjustable visor round off an impressive package.

The Giro Tyrant can be had in three sizes: small 20”–21.75” / 51–55cm, medium 21.75”–23.25” / 55–59cm and large 23.25”–24.75” / 59–63cm.

Available this autumn from all authorised Giro retailers.

Giro Tyrant Cheek pads

The introduction of adjustable cheek pads help tailor the fit for improved comfort (Image credit: Giro)


Key features

  • MIPS Spherical
  • Tool-free, bolt-on visor
  • Goggle compatibility
  • StackTM ventilation
  • Quick-dry padding
  •  Check pad ventilation
  • Spare set of cheek pads included for fit tuning
  • Hardshell with In-mold polycarbonate Hardbody lower wrap
  • Progressive layering with EPS outer liner and EPP inner liner
  • Roc Loc Air DH
  • Channeled StackTM ventilation at brow line
  • 14 vents with internal channeling


  • Giro Tyrant MTB Helmet - £134 / US$150 /€149
Aaron Borrill
Freelance tester

Aaron is Bike Perfect's former tech editor and also the former gear editor of Bicycling magazine. He's tested thousands of bicycles all over the world. A competitive racer and Stravaholic, he’s twice ridden the Cape Epic, raced nearly every MTB stage race in South Africa and completed the Haute Route Alps. Recently, Aaron has also taken up Zwift racing and competes at the highest level of eRacing, the ZRL Premier Division.

Rides: Trek Procaliber 9.9 MTB 

Height: 175cm

Weight: 61.5kg