Industry Nine iRiX ZS44/ZS56 Headset : ZS44/28.6 | ZS56/40 ZeroStack Complete Gold Length-162 You may need a Problem

You may need a Problem Solvers Space Out Kit or similar method to clear the front derailleur clamp

nut kit with two nuts

Rings 42Number of Chainrings Chain Retaining SingleDrivetrain Speeds 12Drivetrain Speeds 13Chainring BCD Direct Mount SRAM 8-BoltChainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm ChainstayChainline/Hub Compatibility 135/142 Road Disc Hubs > 415 mm ChainstayColor CarbonCrank Length (mm) 165Crank Intended Use RoadCrank Intended Use GravelBB Included NoPedal Spindle 9/16"Spindle Interface Type SRAM DUBDefined Color Carbon

The ring is attached via 3 bolts on the back side of the spider near the spindle

Industry Nine iRiX ZS44/ZS56 Headset : ZS44/28.6 | ZS56/40 ZeroStack Complete Gold Length-162 You may need a ProblemTECH 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