Full Speed Ahead 8420ST Power Drive Bottom Bracket - English 73x113mm Full Speed Ahead Power Drive Spindle Silver Model-Bomber Z2 while the Offtrack Crown provides

while the Offtrack Crown provides traction in a wide range of conditions

5 Upsweep 2

The Drop-Stop ST tooth profile is only compatible with Shimano Hyperglide+ chains

• Compatible with Cervelo S5 and P5 bikes that have a braze-on front derailleur mount

1-3/8" Tire Intended Use Road Tire Diameter 20" Tire Bead Wire Labeled Size 20 x 1-1/8 Tire Type Clincher Size 20X1-1/8" Type Clincher

Full Speed Ahead 8420ST Power Drive Bottom Bracket - English 73x113mm Full Speed Ahead Power Drive Spindle Silver Model-Bomber Z2 while the Offtrack Crown providesReplacement 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 Bottom Bracket Shell I. D. 34