HEADSET BEARINGS (UPPER & LOWER) TO FIT GIANT OVERDRIVE (OD) & OVERDRIVE 2 (OD2)
For the Fork part of the specification it should say whether it's Overdrive or Overdrive 2. OVERDRIVE MTB Headset Bearings. OVERDRIVE 2 MTB - Go to Giant UK Website. Ball Bearings & Cages. BB Bearings.