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The Giro Radix MIPS® Mountain Bike Helmet is designed with ultimate protection and comfort for the explorer, the rugged adventurer and the master of the trails.
The Giro Radix MIPS® Mountain Bike Helmet is designed with ultimate protection and comfort for the explorer, the rugged adventurer and the master of the trails.
Giro

Giro Radix MIPS Mountain Bike Helmet - Matte Black

£124.99
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Giro Radix MIPS Mountain Bike Helmet - Matte Black

Season:SP25

Brand:Giro

Code:35944-255

The Giro Radix MIPS® Mountain Bike Helmet is engineered for serious trail riders who demand durability, style, and top-tier protection. Designed with MIPS® (Multi-Directional Impact Protection System), this helmet helps reduce rotational forces in the event of an angled impact, enhancing safety on rugged terrain.

  • Advanced MIPS® Brain Protection – Integrated MIPS® technology reduces rotational forces to provide enhanced protection in the event of a crash.
  • Lightweight, Durable Construction – The hardshell with In-Mold Hardbody™ lower wrap fuses a tough polycarbonate shell to an EPS foam liner, offering superior strength without extra bulk.
  • Customisable Fit with Roc Loc® 5 System – Achieve the perfect fit with one-handed adjustability, ensuring comfort, stability, and a secure feel during every ride.
  • P.O.V.™ Adjustable Visor – Features 15 degrees of movement for optimal sun and debris protection, plus a high position for goggle storage above the brow.
  • Unmatched Ventilation – The Wind Tunnel™ Ventilation System channels fresh air in while expelling heat, keeping you cool and comfortable on long rides.

Whether you're hitting technical trails or enduring all-day adventures, the Giro Radix MIPS® Helmet provides the coverage, airflow, and comfort you need to ride with confidence.

Technical Information
Certification:
  • CE EN 1078
Weight:
  • 300g (size M)
Material Composition:
  • 43% EPS, 23% PC, 21% Nylon, 6% Polyester, 3% POM, 3% PU, 1% Silicone
Sizing Information

These size charts and conversions are meant to serve as a guide. Giro recommend you try-on before riding to ensure full comfort and performance.

Bike Helmet Size Guide

How to measure your size – Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide. Note: Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.

For helmets equipped with MIPS technology, please review the following warning: SOME MIPS® LOW-FRICTION LAYERS, ALONG WITH OTHER PARTS OF A HELMET, MIGHT CAUSE LACERATIONS TO THE WEARER’S HEAD/FACE IN SOME ACCIDENTS. THIS MIGHT OCCUR DUE TO THE HIGH PRESSURE ON THE SCALP FROM THE IMPACT OR AS A BY-PRODUCT OF THE LOW-FRICTION LAYER’S MOVEMENT IN CERTAIN ANGLED IMPACTS TO HELP REDUCE THE ROTATIONAL ENERGIES TO THE HEAD. IF YOU WOULD LIKE FURTHER INFORMATION, PLEASE CONTACT US.

Adult SizeCircumference
S52 - 55.5cm
M55.5 - 59cm
L59 - 62.5cm
XL62.5 - 65cm
Professional Opinion
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