Giant Defy Advanced Steel, Stainless Steel, Black Oxide or Hybrid Ceramic Headset Bearings
Black Oxide is a great alternative to Stainless Steel
Also available from FSA and Enduro
Upper – MR136 – 32.8 x 41.8 x 6 – 45/45
Lower – MR137 – 37 x 46.9 x 7 – 45/45
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