is a 180mm disc to big for a qr front?

[Strelok]

I ask because I can only find the brake I want in 180mm for some reason. (the gusset chute)

http://www.chainreactioncycles.com/Models.aspx?ModelID=17722

 

[tafi]

Shouldn't be a problem. It's been done for years. Plenty of bikes with QR forks came new with 210mm front rotors.