Skip to main content

(413) 499-0294   FREE Shipping on Orders over $100

Giro Ratio MIPS Helmet

Giro Ratio MIPS Helmet
  • Color: Matte Titanium
  • Color: Matte Black
  • Color: Matte Bright Green
  • Color: Matte Harbor Blue
  • Color: Matte Midnight
  • Color: Matte Ox Red
  • Color: Matte Trail Green
Please select options


The Ratio MIPS helmet has the perfect ratio of everything you need to accompany you on the mountain, from its thermostat control adjustable venting to its MIPS technology to its laid-back style.

The Ratio is a no-nonsense helmet that boasts the features found on premium helmets at a more accessible price.

Beneath the sleek silhouette, you'll find the adjustability of an In Form fit system, Thermostat Control adjustable venting and compatibility with aftermarket audio systems by Outdoor Tech. The Ratio is also available with MIPS - which can offer more protection in certain impacts by redirecting impact energy.

- Hard Shell Construction
- Thermostat Control
- Stack Vent Technology
- Vertical Tuning
- In Form Fit System
- Electronics Compatibility: Compatible With Aftermarket Giro Audio Systems By Outdoor Tech
- Certification: CE EN1077
- Small = 52 – 55.5cm
- Medium = 55.5 – 59cm
- Large = 59 – 62.5cm
- X-Large = 62.5 – 65cm

Part Numbers

Option UPC MPN Store SKU
Matte Black / Small 768686050992 7082599 RAT25954163M
Matte Black / Medium 768686051005 7082600 GIR2647002K
Matte Black / Large 768686051012 7082601 GIR26469522K
Matte Titanium / Medium 768686051128 7082612 GIR25452428I
Matte Trail Green / Large 196178017824 7146104 GRR219592223