Very fun maps! The layouts stay true to the original tracks and are still fun in Ring Racers!
However, I did notice a bug with Crash Cove. The item boxes after the bridge sometimes can not be picked up. I'm not sure what could be causing this issue, but it is something to look into. Additionally, I noticed that, if done right, the first tripwire (on Crash Cove) can be bypassed without a speed item by jumping off of the nearby ramp with enough speed and the right angle. If this was intended, or you are okay with it, feel free to ignore it.
Once again, very cool addon. I would love to see more CTR maps in the future!