Maxxis Razr xm Rear tire?

[Logan #34's Dad]

Has anyone tried this tire for motocross racing? Know if they are heavy?
Pros and Cons:

[05 450R in pa]

i've ran them for 2 seasons now and really like them.even after 2 seasons still have lots of tread(remove and rotate to keep them even) hook up great 90 percent of the time except in cases where the top of track gets slimey or kinda greasy you hafta air way down but great overall tire