Hi guys, I have one of these air boxes and trust me it is much better than the standard DM one. It is much much lighter, the DM one is way too heavy. This is quality made from carbon fibre. Yes the design is similar to the DM, it is not different inside. It does sound fantastic though! I will use on all my future minimoto bikes. You can have a better look at
http://minimotoz.com/?p=206