FSA (FSA Speed Ahead) 8420ST Power Drive Bottom Bracket - English, 73x118mm, FSA Power Drive Spindle, Silver Hand Pumps - they are aluminum and

- they are aluminum and can be damaged by excessive torque

155664-Q0-L

UPC: 639266097280

Crank Intended Use: Commute

142985-Q0-L

FSA (FSA Speed Ahead) 8420ST Power Drive Bottom Bracket - English, 73x118mm, FSA Power Drive Spindle, Silver Hand Pumps - they are aluminum andReplacement bottom bracket for FSA's Power Drive splined cranksets. The stiff forged hollow chromoly spindle is supported by a pair of sealed industrial cartridge bearings. Additional weather protection comes from double Snap seals. Forged hollow SCM4130 chromo spindle Industrial 6002KRS cartridge sealed bearings with oversized 3 16 diameter balls Cold forged aluminium cups Double snap seals for water and dirt protection Product Specifics BB Shell