FSA GOSSAMER CK BB386 172.5mm 46-36T ChiansetNot ready for carbon? Gossamer is a lightweight crankset for alloy fans everywhere. With an impressive history of wins on the brutal cobbles of Roubaix to the mountain switchbacks of the Alps and Dolomites, it needs no further introduction. The cold-forged aluminium arms are scalloped for the maximum strength-to-weight ratio, while the BB386 spindle is forged from an even stronger alloy.CNC-machined 7075 alloy chainrings are tougher still and are ramped and pinned for rapid and precise shifting. The chainring bolts are formed from chromoly steel for exceptional strength.Boosting stiffness yet further is the ABS system - Asymmetric Bolt Spacing. A fifth chainring bolt hidden behind the crank arm delivers extra strength just where it's needed to improve power transfer and keep shifting ultra-crisp under the heaviest loads.Product DetailsCold forged AL6061/T6 aluminium crank armsFits Shimano and SRAM 10-11 sped systemsQ-Factor: 145mmForged 7050 BB386 spindleCNC machined AL7075 chainringsBCD: 110mm ABSApprox. Weight: 751g
Bottom bracket tool compatible with 16 notch 48.5mm outer diameter cups,Compatible with BBB BBO-09, BBO-72, FSA MegaEvo (386Evo),Kraton handle provides a firm grip,Extra long: 33cm.