Which are safer? Mx helmets or MTB full face helmet Forums › Mountain Bike Forum › Which are safer? Mx helmets or MTB full face helmet --SHARES Tweet Add to Flipboard Magazine. This topic contains 1 reply, has 2 voices, and was last updated by FredCook 1 month ago. Author Posts March 18, 2019 at 3:50 pm #258961 Smallchildgamer The title explains the question. I’m not sure if modern mx helmet can do well in slow speed, all i know is that mx helmet wouldn’t protect very well in DH speed or lower speed. Or just stick to expensive mtb full face helmet Yeah my username is quite too idiotic. Not sure if this topic is stupid or not March 19, 2019 at 9:03 am #258985 FredCook Not a stupid question. I think the general consensus is MX helmets are too heavy for mountain biking from a safety, or effectiveness, stand point. There have been a few articles about this question. Author Posts Topic Voices Posts Freshness Your best crash story Started by: Juan_Gear in: Mountain Bike Forum 107 243 23 hours, 21 minutes ago killer climb Post Pictures Of Your Rigs Here! (Part 2) Started by: Jeepmb in: Mountain Bike Forum 103 259 2 months, 4 weeks ago LC9er What was your first mountain bike? Started by: Jeff Barber in: Mountain Bike Forum 95 102 2 weeks, 5 days ago ChazS Got a "home" trail? Started by: Fitch in: Mountain Bike Forum 75 90 2 months, 2 weeks ago aj2018 MTB Photo Post Started by: Greg Heil in: Mountain Bike Forum 60 541 1 year, 9 months ago calebaz You must be logged in to reply to this topic.