Home / Mountain Bikes and Gear / Accessories / Transport / Vehicle Racks The #1 Cause of Mountain Bike Crashes By Jeff Barber November 13, 2020 Caption this! We’ll get it started. That’s probably not covered by your MTB frame warranty. Share This: Tweet Jeff Barber Jeff co-founded Singletracks.com with his wife Leah (mudhunny) in 1999. Today he works out of Singletracks World HQ in Decatur, GA as the Editor in Chief.