Sometime ago I bought some spare wheels for my track bike. Never got around to using them until now.

They are the correct wheels as the casting numbers are the same, but the disc diameter is smaller 275mm to almost 300mm.

What model are they from is the question?

Cheers!

NSR250 MC18 onwards use 276mm discs up front, I believe certain CBR250RR's also use the same fitment.

Thancks for the responce.

CBR250RR connection maybe the answer as they fit directly onto my exising NC29 wheel, just too small for the job required!