1-1/8" Upper / 1.5" Bottom

F-13B / F-13BS / F-11B

ZS44/28.6 | ZS56/40

1-1/8" Upper / 1.5" Bottom
ø28.6xID44xID56x39.8

Height:        5.1+3=8.1mm
Weight:       125g
Bearings:     semi-cartridge bearings
                    Ball Retainer: 5/32" x 22(R003) Upper
                    Ball Retainer: 3/16" x 23(R206) Lower
Material:      w/steel crown race
Finish:          EDBK

F13BHS crown race ø30 mm for 1-1/8" straight steerer

F11B Lower cup OD 55mm 

click for drawing - F-13B
click for drawing - F-11B