Full Speed Ahead Gossamer Pro BB386EVO Crankset - 170mm 11/12-Speed 50/34t 120/90 BCD 386 EVO Spindle Interface BLKFull Speed Ahead Gossamer Pro BB386EVO Crankset 170mm 11 12 Speed 50 34t 120 90 BCD 386 EVO Spindle Interface Black. The FSA Gossamer Pro 386EVO is a high end crankset for alloy lovers. The cold forged aluminum arms are heavily scalloped for the maximum strength to weight ratio and the versatile 30mm BB368EVO spindle is forged from an AL7050 material. The Gossamer fits many combinations of bikes riders and riding styles. Compatible with Shimano 10 11