Cheers hairygit I checked out the Motogrid website and yes there are heaps of other bikes listed using the part no 45107-MA3-006, mostly big 900/1000cc with 4 pot calipers, funnily enough mine isn’t listed. Maybe didn’t sell them over the pond. David Silvers list OEM ones for around £15 but add postage and vat and they’re not much cheaper. The search continues.