Bontrager Bike Helmet Fit System - Boa | Trek Bikes
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Bontrager Bike Helmet Fit System - Boa

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$29.99 Model 22317
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Product details

  1. Original equipment replacement Boa® System for your Bontrager helmet
  2. Compatible with all Boa-equipped Bontrager helmets, except Velocis MIPS
  3. Can also be used to upgrade your Headmaster-equipped Bontrager helmet to the Boa System

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