Specs on the cat page are wrong. 24/50 is the 141 inch version. 21/41 is apparently correct. The Yamaha version will have overdrive more comparable to a doo at close to .85 apparently. Should net 120s.
Jester
Jester nice to see you over on the dark side but the new clutches are .91 overdrive up from there .93 not .85
21/41 will net you 123 at 9150 rev limiter unless yamaha has raised it.