Bought from this company before https://www.racediscs.com/ They specialise in offroad MX braking parts

British made and a comprehensive range at a very reasonable prices, even had a rear for the Kawasaki KLX450 which is relatively obscure and one of the few places I could get one which was £30 and everywhere else was twice that price.

I have just received a front disc for the KTM freeride @ £31.95 delivered which is quite competitive and quality is good. Worth checking out