The rear of it comes off for adjustments to rear hub & removal of wheel. I also looked at the wheel side part of the chaincase i just got for xmas (turns out it needs 3 different part numbers for the 3 sections) and it simply slips over the bottom bracket's crank mount no fuss no muss, no dis-assembly required. The outer facing & rear section remain to be purchased, but i have a feeling the dealer will be able to get them no additional charge due to the confusion, as ASI seems super customer friendly.

- Andy