Front Hydraulic Brake Master Cylinder for Honda Motorcycle Xr500 Xr400 Xr250 Xr350 Right Side Black Fit honda xr500 xr400 xr250 xr350 Fit 7/8" handle bar, with lever and brake light switch With 10mm hole for rear view mirror Piston bore diameter 12.7mm, banjo Bolt 10x1.25 mm thread pitch black color, right side