Upper bearing – MR136 – 32.8 x 41.8 x 6 – 45/45. MR136 TOP HEADSET BEARING. MR137 – 37 x 46.9 x 7 – 45/45. MR137 BOTTOM HEADSET BEARING. Take the new bearings, apply a little gease and place on the crown race of the fork.
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