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Dura Ace BR-R9170
CrV tool steel swivel head
when the First Cycling Tour of Spain was held
thanks to the Tri-Layer insulation and radiant heat reflective technology
This is where the cable end can be tucked away
DCTech T47 External Ceramic for Shimano bb Dura Ace BR-R9170BIKONE DCTech T47 External bottom bracket for Shimano cranks is designed for cyclist who demand the best in performance and durability, wheter you are teckling tough mountain trails or cruising on roads. Thanks to our Dual Cup Technology (DC Tech) and our top quality ceramic bearings, you will experience the smoothest of rides. Assambly specs Crankset diameter: 24 mm (Shimano) Frame width: 68 73 mm (This model is available for both mountain and road
