Cane Creek ZN40 Series Bearing Kit - 45 x 45 (1) 42mm O.D and (1) 52mm O.D MFPN=TKRFH01 } Aluminum backing with forged

} Aluminum backing with forged aluminum cooling pins reduce heat buildup and provide superior

Not compatible with Chris King rear hubs

Basket System:TBS

Its solid appearance comes from stable blocks more rubber and bigger widths

PU membrane

Cane Creek ZN40 Series Bearing Kit - 45 x 45 (1) 42mm O.D and (1) 52mm O.D MFPN=TKRFH01 } Aluminum backing with forgedCane Creek ZN40 Series Bearing Kit 45 x 45 42 52mm. ZN40 Series bearings are corrosion resistant zinc coated machined steel cartridge bearings with hardened steel balls which vastly increases the longevity of your headset. Compatible with 110 40 and 10 Series headsets TECH SPECS Cartridge Bearing Angle 45x45 Bearing I. D. (mm) 42 Bearing Type Cartridge Bearing O. D. (mm) 52 Thickness 7