Honda genuine OEM NOS front master cylinder stay 45550 KV3 006 to fit;

NSR250 RG 1986 (MC16)

VFR400 RH  1987 (NC24)

VFR400 RJ   1988 (NC24)

Unused, new old stock, in original sealed bag. I haven't opened it to take pictures.

No longer available from Honda.