Eliminate dropped chains forever, so you can ride without interruption.FeaturesFOREFRONT -The OForefront feature allows for 4-way, front-accessible setup and adjustment. This broad adjustability makes installation less Otrial-and-error and more Oset-and-forget.Pop-UP -ThePop-Upfeature allows fortool-free chain access- simplifying installation and drivetrain maintenance. The guide pops-up and snaps shut with satisfying and secure clicks.SpecificationMaterial: Carbon (SLR model)Chainring Range: 28-38t (26-36t oval)Drivetrain Compatibility: Internally shaped to accommodate even super-wide ratio cassettes and wide chain lines.Mounting Options: ISCG-05 only.Weight: 39gNote: SRAM iO Guides are designed for SRAM charinrings with integrated outer chainguards