GZP Drilled St.st. rotor 10" polished

Fits front on all dual disc FX, FXR and Sportster models 1977 thru 1983 Rotor has 10" outer diameter, 2 13/32" inner diameter and has 5/16" counter sunk mounting holes., Disc rotor (OEM 44137-77A)

Made of chromium alloy Stainless Steel and precision ground for trueness, Surface induction hardened with a 12- 14% chrome contents for superior wear characteristics on full standard A1S1 #420 Stainless Steel plate. Rotors are compatible with all types of disc brake pads including sintered metal and are mirror polished. Drilled rotors provide better braking in wet weather, dissipate heat more efficiently, and reduce unsprung weight.