From reading their website, the only difference that i can see is that the the floodgate threshold is "tooled" via hex wrench on the RL where it is externally adjustable on the RLT.

отсюда: http://forums.mtbr.com/shocks-suspension/reba-rl-vs-rlt-question-659916.html

+1 к Пашевичу, в каком-то описании попадалось это самое "Tooled"...