Last year I bought the Moto X Caddy, one of like 6 or 7 different bike carriers. Well to make a long story short I bought the wrong one. After seeing 2000's bike carrier I can't remember the name? He has the one with the arm that slips down over the seat and uses the bikes suspension to hold it in place. I went back to http://www.bdiracks.com/bdimx.html and called the guy basically to complain about his system. Low and behold he had a new G3 support brace which is basically a slipon version of the one what 2000 has. In summary, It cost me another $50.00 bucks for the new part. Hopefully I'm good to go now as I hate to keep looking back every 30 seconds at the bike as i'm driving down the road.