trx 450r smokes

[ethan450r]

I have a 2005 trx450r and runs and drives perfict but it smokes when you rev it up Im wanting to no if this is ok or if something is wrong with my 4 wheeler. thanks

[01boneless]

if it does it after its warm its time for some rings jmo

[DnB_racing]

yep good chance its time for a top end rebuild....

but it might just be running rich from a very dirty air filter,

either way its pretty obvious using oil because of bad rings will be blue/grey smoke

or dirty air filter will be a blacker smoke