12-03-12, 09:01 PM
IIRC when i looked at a trx shock the spring was about half that of the standard fzs600s shocks spring rating(14.7kg/mm) so it'd be serously under sprung. Annonyingly racetechs site lists spring rates front and back and what weight that spring is correct for, for pretty much every bike EXCEPT the fazer. I took my Nitron (it came from a vfr400...) in to be re-sprung for me and it came back with a 900lb/inch (16.11kg/mm) spring put on so we can assume 16.11 is right for an 11ish stone rider so you'll want a spring even stiffer than that.