Ye its the full on DH casing super tackys. The 22 only comes in the DH casing. Had a look at the bikepark one but think it would defeat the purpose. Seen one in a shop last week and had a feel of it the sidewalls are definitely a good bit thiner than the DH one. Anyone know somewhere that has the 22 29er in stock ?Im not sure what casing your 34's are. Dh casing is a fair bit heavier than an exo+(around a lb) and id imagine that would drain the battery a bit. They do have the 34 in a "bike park casing" and that will split the weight difference between an exo+ and a 34 dh casing. You wouldnt be able to run the psi in the bp casing as low as the dh casing though. Im not sure if mich offers different casings in the 22. Ive found the 34 to roll fairly fast or atleast in comparison to the rockr2(awesome tire). Id like to try a 22 to compare now