The Excursion mountain bike comes with 21-speed twist shifters and a Shimano rear derailleur. The last of their fat-tire bikes that we found noteworthy is the Mongoose Argus. It features much of the same setup but schwinn spin bike with more premium components. So instead of mongoose shifters, you’ll get Shimano 7 speed derailleur. Moreover,… Continue reading Mongoose Bike High Resolution Stock Photography And Images