Caliper Piston - Fits: Front or Rear Caliper on 1977-84 650's. Replace if pitted or scored or air will seep into the brake system. Price each. will fit on many other models check dimensions
like: XS400 D/E/F 77-79 front and rear, SR500 E/F/G/H 78-81 front and rear, XS500 C/D/E 76-78 front and rear, XS750 77-79 rear only, XS850 S F 79 front and rear, XS850 79-81 rear only, XV1000 1982, XS1100 G Midnight Special 80 rear only, XS1100S F/G 79-80 rear only, XS1100S H 81 rear only.
Length = 41.3mm
Bottom Width = 38.15mm
Top Width = 27.26mm