I noticed that too.. I had a Cycle shell but sold it as the floor flexed and the Burgman center stand was tough to get in place with the flexing floor.. so the chock in this may make sense.. The Cycle shell worked well with my MP3.. but the only place I had for it was soft ground so I had a beautiful 12 X 18 electrified barn built for my BurgmanVery cool. Must have a wheel chock as the rider dismounted and didn't drop side stand. The plastic is probably more durable than the fabric on my Bike Barn which has a life expectancy of about 4 years.