GP Bearings Parts GP Headset Bearing Set – Giant OD2 Mountain Top And Bottom – MR136 And TH-073

High quality, sealed angular contact bearing set to fit Giant OD2 (Over Drive 2) mountain bikes that used a 1 1/4-1.5 Inch tapered steerer. 

Includes 2 x Bearings

Upper bearing – 1 1/4 Inch – 41.8 x 32.8 x 6mm – MR136

Lower bearing – 1.5 Inch – 51.8 x 40 x 8 – TH-073