YAMAHA YZ450F 2010-14 might be good all the way to 19 check it , forks inserts with springs and rear shock tuned and set up for SUPERMOTO , build for 170-185 LBS rider . Has very little use and in a great condition. For any more info you can TXT me 786-606-7382 Gabe
BTW its a RACE TECH gold valve kit will come with the boxes all the info and the shims he didn't use , i can include the OEM springs too