T45 Bottom Bracket for 30mm graveltire These IS headsets are for

These IS headsets are for frames with molded-in internal bearing cups

If you have a round seat tube with no braze-on mount

Cups: Unibody CNC aluminum 7075 T6 anodized

Specifically designed for pressfit bottom bracket installation

Each tube carries 20 tablets

T45 Bottom Bracket for 30mm graveltire These IS headsets are forT45 Ceramic Bottom Bracket for 30mm cranks is for cyclist who demand the best in performance and durability even on the toughest trails. Thanks to our Dual Cup Technology (DC Tech) and our top quality bearings, you will experience the smoothest of rides, no matter how rough the road gets For a correct compatibility, mountain cranks should be always mount on mountain frames and road cranks on road frames. Crankset diameter: 30 mm Frame width: 83 mm