Giro Radix MIPS Bike Helmet

$74.93Compared to $100.00*Save 25%
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Color: Matte Trail Green
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Built for the rugged adventurer who appreciates a perfect fit, the Giro Radix MIPS bike helmet keeps the sun out of your eyes and delivers plenty of ventilation.


  • Lightweight, stable and comfortable, the highly adjustable Roc Loc 5 MIPS Fit System allows you to quickly and easily tune fit tension and fore/aft tilt using a single hand
  • Rotational motion can cause brain injuries; with MIPS, a low-friction layer slides 10 to 15mm in all directions, reducing rotational motion to the brain during impact
  • P.O.V. visor offers 15° of adjustment to help keep the sun out of your eyes without obstructing your vision
  • In-mold construction fuses a tough polycarbonate outer shell with an impact-absorbing foam liner; fusion process allows for lighter helmets and better ventilation
  • Wind Tunnel ventilation system combines active vents in the shell with internal exhaust channels that thrust fresh, cool air over and around your head and forcing hot air out


To find your size, position a tape measure just above your ears and about 1 in. above your eyebrows. Keep the tape level to measure the circumference around the largest part of your head and then find the corresponding size in the Technical specs info.
View all Giro Mountain Bike Helmets

Technical Specs

Best Use

Mountain Biking

Helmet Style

Mountain Bike

Helmet Construction


Shell Material


Head Circumference

S: 20-21.7 inches

M: 21.7-23.2 inches

L: 23.2-24.8 inches






11.1 ounces



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