Full Speed Ahead 8420ST Power Drive Bottom Bracket - English 73x113mm Full Speed Ahead Power Drive Spindle Silver Model=Compression Plug With Integrated Spacer Stem Cap Light and stiff construction reduces

Light and stiff construction reduces cassette inertia resulting in faster acceleration and increased chain security

MagicZero - automatically checks and recalibrates your power meter as you ride – no need to manually calibrate

9 Thru Bolt

Spring Type DebonAir+ Wheel Diameter 27

Full Speed Ahead 8420ST Power Drive Bottom Bracket - English 73x113mm Full Speed Ahead Power Drive Spindle Silver Model=Compression Plug With Integrated Spacer Stem Cap Light and stiff construction reducesFull Speed Ahead 8420ST Power Drive Bottom Bracket English 73x113mm Full Speed Ahead Power Drive Spindle Silver. Replacement bottom bracket for FSAs 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