Industry Nine iRiX IS41/IS52 Headset : IS41/28.6 | IS52/40 Integrated Complete Silver MFPN=00.4020.557.001 and race-ready efficiency

and race-ready efficiency

wasting precious watts—but lower pressures soak up these bumps and keeps your power strictly for forward movement

Featuring a lockable zipper and an outside pocket equipped with a water-resistant zipper

80 miles (130 km) or 6 hours (eco mode) or&nbsp

Industry Nine iRiX IS41/IS52 Headset : IS41/28.6 | IS52/40 Integrated Complete Silver MFPN=00.4020.557.001 and race-ready efficiencyTECH SPECS Bearing Grade Stainless Steel Crown Race Diameter 40mm Lower Cup 52mm Headset Type Integrated Upper Cup 41mm Material Aluminum Primary Color Silver S. H. I. S. IS41 28. 6 IS52 40 Steerer Tube 1 1 8 1. 5 Headset Position Complete SHIS Upper IS41 28. 6 SHIS Lower IS52 40 Color Silver