WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Bell Helmets MX-9 Adventure MIPS Berm Helmet

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Bell Helmets MX-9 Adventure MIPS Berm Helmet

Shipping & Returns

Orders $100 and over qualify for our free shipping offer. See our full shipping policy for further shipping details.

Return any new, unused and unaltered item within 30 business days. Create a return label online for as little as $7.99. Please read our return policy.


  • Lightweight Polycarbonate/ABS (Acrylonitrile Butadiene Styrene) shell construction
  • MIPS energy management system
  • Three shell and three EPS (Expanded Polystyrene) sizes for a personalized fit
  • Integrated/removable shield with NutraFog II anti-fog, anti-scratch, and UV protection
  • Velocity Flow Ventilation system for maximum cooling
  • Two point adjustable visor with air intake vents
  • Removable/washable anti-bacterial interior
  • Padded chin strap with D-ring closure
  • Meets or exceeds DOT certifications
  • Black/Red/White


Note: Helmet comes standard with a clear faceshield. Optional tinted faceshield shown.

Bell MX-9 MIPS and MX-9 Adventure MIPS Helmets

Head (in) 20-7/8 - 21-1/4 21-5/8 - 22 22-1/2 - 22-7/8 23-1/4 - 23-5/8 24 - 24-3/8 24-3/4 - 25-1/8 25-5/8 - 26
Head (cm) 53 - 54 55 - 56 57 - 58 59 - 60 61 - 62 63 - 64 65 - 66
Hat Size 6-5/8 - 6-3/4 6-7/8 - 7 7-1/8 - 7-1/4 7-3/8 - 7-1/2 7-5/8 - 7-3/4 7-7/8 - 8 8-1/8 - 8-1/4
Helmet Shell, EPS, and Cheek Pad Sizing
Helmet Size XS S M L XL XXL 3XL
Shell Size 1 2 3
EPS Size 1 2 3
Helmet Size XS S M L XL XXL 3XL
Cheek Pad Thickness (mm) 40 35 40 35 35 30 25
Cheek Pad Size Range Cheek pads are interchangeable across all size ranges

General Sizing Information

If you are unsure about your size, compare your body measurements to the charts provided to determine the correct fit. These charts will give you a good idea of the size to order, but be sure to read special sizing information that may accompany an item description. Some merchandise dimensions may vary from the averages charted here.

Head Circumference

Measure around head one inch above eyebrows and across the largest portion on the back of the head and use the above cross reference chart.


Age & Gender
MX-9 Adventure
Model Name for Gear
MX-9 Adventure
Bell Helmets

Item Numbers

Details Item Number Availability Store Pickup
Details:Black/Red/White  3XL Item #650-7094945 Availability:Backorder: Ships in 7-12 daysStore Pickup:Unavailable
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov


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