iRiX ZS44/ZS56

Attributes Bearing Grade Stainless Steel Crown Race Diameter 40mm Lower Cup 56mm Headset Type ZeroStack Upper Cup 44mm Material Aluminum S.H.I.S. ZS44/28.6 | ZS56/40 Steerer Tube 1-1/8''-1.5'' Headset Position Complete SHIS Upper ZS44/28.6 SHIS Lower ZS56/40