top tube concerns Singletracks Mountain Bike News, Reviews, MTB Trails and Community › Protected: Forums › Mountain Bike Forum › top tube concerns Tweet Add to Flipboard Magazine. Tagged: full suspension, suspension Viewing 0 reply threads Author Posts February 23, 2013 at 16:01 #116721 boomermcpeak just bought my first full suspension mtb(giant yukon fx). i had to get a top tube for my bike rack. want to know how secure these things are, and should i be concerned with the bike being able to sway back and forth. Author Posts Viewing 0 reply threads You must be logged in to reply to this topic.