Giant OD2 MTB Headset Kit

GP Bearings - Headset bearing set for Giant OverDrive 2 MTB, Upper Bearing MR136 - 32.8 x 41.8 x 6mm - 45 / 45 Lower Bearing ACB518K / TH-073 - 40 x 51.8 x 8mm - 36 / 45