B&W Bike Case IIBike Case II Roomy, Useful, and safe. The successor to the bike case, our large bike case 2. 0, provides sufficient room for mountain bikes, triathlon cycles, and racing bikes with wheels up to 29". The useful bike case 2. 0 can travel anywhere and offers your bike the best, most reliable protection possible at all times, whether you're on a plane, competing, or touring. This is especially important for professional riders. The durable ABS shell