Industry Nine iRiX ZS44/ZS56 Headset : ZS44/28.6 | ZS56/40 ZeroStack Complete Blue

TECH SPECS Material Aluminum Primary Color Blue Lower Cup 56mm S.H.I.S. ZS44/28.6 | ZS56/40 Bearing Grade Stainless Steel Crown Race Diameter 40mm Upper Cup 44mm SHIS Upper ZS44/28.6 Headset Type ZeroStack SHIS Lower ZS56/40 Headset Position Complete Steer