Here’s all the secrets of the shimanomtb 12-speed #mountainbike groups! . From specs to features to materials, this complete overview and comparison will show you ALL the differences between the groups, which parts are worth upgrading, and so much more! . Link in bio, or search “Shimano” on Bikerumor.com and get ready to geek out! . #mtb #shimano #shimanomtb #12speed #biketech #cyclingtech #bikehacks #itsonbikerumor