Net forged 6066 aluminum crank with a high strength to weight ratio. Includes 68/73mm BSA/English-threaded triple sealed external cup bottom bracket, use BTI #RF-2941 for BB30 conversion, RF-2943 for BB92 conversion. EXI interface for easy crank installation and removal with standard tools, 3mm of chainline adjustability. Shimano optimized 9sp triple rings. 995g with BB.