These are 2x brackets made by Harris for a steering damper, not sure what they are for so pls have a look at the pics to see if its suitable for you. it looks like the yoke bracket has been modified.
Motorcycle steering damper For Yamaha V-MAX V MAX VMAX 1200 1700 Carbon Fiber Adjustable Steering Damper Stabilizer Without Mounting Brackets
Ohlins Steering Damper Complete with Harris Mounting kit for Suzuki GSXR Models
YAMAHA R1 4XV WP (White Power) Steering Damper - Harris Fitting Kit
Ohlins Steering Damper Harris Fitting Kit Honda CBR 929 Fireblade SC44
Motoforti CNC Fork Brackets Steering Damper Mounting Clamp Universal 60mm
Motoforti CNC Fork Brackets Steering Damper Mounting Clamp Universal 53mm
