Industry Nine iRiX ZS44/ZS56 Headset : ZS44/28.6 | ZS56/40 ZeroStack Complete Gold Arch MK4 Brake Compatibility Disc Only Color

Brake Compatibility Disc Only Color Black Rim Width (Internal) 23 Brake Track None Manufacturer Spec ERD (mm) 606 Weight 443 Wheel Size 29" Material Alloy Defined Color Black ISO Diameter 622 / Road / 29" Hub Drilling 32 Tire Type Tubeless Ready Valve Presta Rim Center Offset (mm) 0

Breathable and Durable: 3D mesh provides ventilation and increased comfort during training

By extending the reach of the handlebars

and our testing cofirms that the performance is outstanding

DUB bottom bracket adds durability and simplicity (Bottom bracket sold separately)

Industry Nine iRiX ZS44/ZS56 Headset : ZS44/28.6 | ZS56/40 ZeroStack Complete Gold Arch MK4 Brake Compatibility Disc Only ColorTECH SPECS Bearing Grade Stainless Steel Headset Position Complete Crown Race Diameter 40mm SHIS Upper ZS44 28. 6 Headset Type ZeroStack SHIS Lower ZS56 40 S. H. I. S. ZS44 28. 6 ZS56 40 Steerer Tube 1 1 8 1. 5 Material Aluminum Primary Color Gold Lower Cup 56mm Upper Cup 44mm