Thanks for the lead, but it's not my model. I believe the CB750F had a dual piston caliper like that, but the CB750K model that I have has a single piston of a different size. I looked at CSML and David Silver and checked with Honda, but it has been discontinued. Nowhere else can I find one. So, I'm getting a machine shop to fabricate one for me out of stainless - don't know the price yet.