The Boa is a perfect bike rack to use if you don't want a full-length wheeltray, or your crossbars are situated farther apart on the roof. Because of the short tray design, it's imperative that your crossbar spread fall somewhere in between 32" and 50", with around 40" being ideal for most bikes.Because if its minimalist design, the Boa is THE bike rack of choice when attaching to the Loadwarrior or Megawarrior baskets, since it won't eat up valuable interior basket space.
Bar spreads need to be at least 32" apart, with an ideal bar spread of 40". The further you deviate from 40", the harder this rack will be to use on square Thule bars, since the tray cannot rotate effectively around the square crossbar. This is the bike mount of choice when mounting bikes inside the LoadWarrior or MegaWarrior, since it will not eat up any of the interior cargo space inside the basket.Be careful, though, when using the MegaWarrior extension, since the bar spread will now be too big!, forcing you to use the accessory load bar that is included with the basket, which may interfere with your load/cargo capabilities.
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