Industry Nine iRiX IS41/IS52 Headset : IS41/28.6 | IS52/40 Integrated Complete Blue MFPN=00.4021.081.007 5 Maximum Rotor Size 220mm

5 Maximum Rotor Size 220mm Stanchions Material Aluminum Lower Tubes Material Magnesium Spring Adjustments Air pressure Bottomless tokens Stanchions Diameter 38mm

Crown Material Aluminum Brake Type Disc Stanchions Diameter 35mm Damping Charger 3

front/rear front axle/spacing (mm) 15x110 Boost hole 28h weight 181g

This update was really worth it

Compatible with sensors (sold separately) for monitoring heart rate

Industry Nine iRiX IS41/IS52 Headset : IS41/28.6 | IS52/40 Integrated Complete Blue MFPN=00.4021.081.007 5 Maximum Rotor Size 220mmTECH SPECS Bearing Grade Stainless Steel Material Aluminum Primary Color Blue Upper Cup 41mm SHIS Upper IS41 28. 6 Crown Race Diameter 40mm Headset Position Complete Headset Type Integrated S. H. I. S. IS41 28. 6 IS52 40 SHIS Lower IS52 40 Steerer Tube 1 1 8 1. 5 Lower Cup 52mm