RockShox Seatpost Upper Piston 225mm 30.9/31.6mm Reverb AXS ModelNumber=G0766 Offers the same chain retention

Offers the same chain retention performance as seen in all higher-level Eagle drivetrain cranks

Steerer Type Tapered Lockout Switch Handlebar - Cable Brake Type Post Mount 160 Negative Spring Air Travel (mm) 100 Offset 51 Axle to Crown Length 507 Front Axle QR x 100mm Maximum Tire Width 62 S

Weight:  28g

Thanks to three different walk modes

Be sure the bosses on the spider "plug in" to the chainring

RockShox Seatpost Upper Piston 225mm 30.9/31.6mm Reverb AXS ModelNumber=G0766 Offers the same chain retentionSeatpost Upper Piston Assembly 30. 9 31. 6, 100mm (Includes Upper Piston Valve, Shaft) Reverb AXS B1+ (2026+) TECH SPECS Misc 30. 9 31. 6 225mm