Don't let a dropped chain on the last lap lose the race for you! The 1x is the perfect guide for riders and racers wanting a lightweight single-ring front drivetrain for cyclocross and gravel use or riders wishing for more security out of their "narrow/wide" setups. All 1x guides feature the co-molded "TR" upper guide - lighter and quieter, what's not to love? Don't lose the race to a dropped chain! The GCX is the perfect guide for gravel and cyclocross riders and racers wanting a bulletproof, single-ring front drivetrain. Newly redesigned to be lighter, quieter, & maintenance-friendly. POP-UP The “Pop-Up” feature allows for tool-free chain access - simplifying installation and drivetrain maintenance. The guide pops-up and snaps shut with satisfying and secure clicks. Tech Specs Compatibility ~ Chainring Range: 38-46t ~ Drivetrain Compatibility: Internally shaped to accommodate 44-51mm chainlines, covering all modern gravel and road 1x systems. ~ Mounting Options: Braze-On Mount Aesthetics ~ Guide 26% smaller than older models for more discreet aesthetics. Weight ~ Weights 29g, lighter and stiffer than outgoing models. Features: ~ Perfect for "clutched" 1x10 and 1x11 drivetrains, as well as those using chain-retaining rings (like our Wave Ring) ~ Tracked and grooved upper guide / backplate interface increases stiffness and eases installation ~ New co-molded "TR" upper guide with softer durometer interior for silent guidance ~ Oval compatible ~ Braze-on and Seat Tube Clamp options ~ 34.9mm Seat Tube Mount 38-42T ~ 28.6 / 31.8mm Seat Tube Mount and Braze-on 38-44T Please visit our website at http://www.ecomtb.com.my OR https://shopee.com.my/eco_mtb ** There is 1-3cm errors due to manual measurement. Please kindly understand. ** Actual product colour may slightly vary due to photographic lighting sources or your monitor settings. ** WE DO NOT DO COD ** ONLINE ONLY ** We support original products only. ** PRICE INDICATED IS ALREADY BEST PRICE, EXCLUDE COURIER