hi, i read someone asking about a costa variator. i have a 2006 burgman 400s .bought it with 2000 miles on it.at that time a got a costa to replace jerkey and noisy stock variator . wow what a difference ,very smooth on takeoff no roller noise and a lot faster on takeoff . bike now has 9000miles with no problems at all. top speed is about the same 95 mph,thats at 4300 alt. and a 250 lb rider. cant remember price around 280, i think. i have a 2010 yeager gt 200i . just got it and think its a great machine. no need for a costa onn this baby. thanks, iker