* New bearing design matches overdrive headset system
* For tapered 47.6 to 52mm OD headtube
* For 1.1/4" steerer
* Alloy top cover
* Campy Angular Contact Bearing (Black seal)
**Spares:**
* Top Bearing: MR136 (160-6746)
* Bottom Bearing: MR137 (160-6752)