Industry Nine iRiX Upper IS41/28.6 Blue 5mm Cover Fits Brand-Rocky Mountain High-Carbon Ferrule uses best-quality steel

High-Carbon Ferrule uses best-quality steel and increased thickness for improved durability over standard ferrules

and highly functional 3L Ventair fabric for optimal comfort

Longer dynamic wax pocket for hard wax conditions

On the outside

Industry Nine iRiX Upper IS41/28.6 Blue 5mm Cover Fits Brand-Rocky Mountain High-Carbon Ferrule uses best-quality steelCustomize and upgrade your cockpit with iRiX options Separate upper and lower headset cup assemblies to mix and match Upper assemblies include star nut and top cover, while lower assemblies include split crown race Crown race and top cover employ removable and replaceable silicone lip seals to keep the sealed, 440c stainless steel bearings contaminant free TECH SPECS model iRiX upper S. H. I. S. IS41 28. 6 upper lower upper stack 5mm color blue weight