【How-to】How much hp does a yz426f have

02WR426Cali. The 426 is a great bike, yes a little big and heavy when compared to newer bikes, but mechanically a great bike. I have an 02 wr which I purchased new and I have never had a problem with it. Literally 1000’s of single track miles as well as 1000’s of Baja pre-run miles.