I'm not interested in ultramaxx as for there is a $99 version coming out shortly that comes with all gears (not just second speed gear). Also, the usage of a second speed gear with a steel idler will ruin the second speed gear, this is why UM used an alloy instead of steel (when they had their first generation set that was to be used with steel idler, they tried to compensate with a teflon hardcoat, but it didn't work, hence gen II).

This braking system works very well. I couldn't ask for anything more. Testing it out yesterday if worked like a charm. However, I am running duel carbon fiber disc brake (what is included is a single fiberglass disc brake, but still works fantastic).

In simple terms, this mod will make your emaxx stop like a tmaxx, which is good.