OneUp Components BB Mount Chainguide Narrow Wide chainrings changed the game when it came to chain retention while running a 1x drivetrain, but it's still not a guarantee that you won't run into the occasional dropped chain. The OneUp chainguide will eliminate dropped chains forever while increasing your chainring life. The OneUp BB / ISCG03 Mount Guide uses a simple, one tool adjustment, installs easily, and weighs in at a feathery 34g. Ride with confidence knowing you will never again drop another chain. Features Single tool adjustment (4mm hex) Boost compatible Oval Compatible Stainless Steel hardware Includes 2 top guide pieces 1xBlack 1xGreen Patent Pending adjustment system Specifications Weight: 34g Capacity: 26-36T Chainline: 5.5mm adjustment Mount: Threaded BB Mount / ISCG03* | Oneup Components BB Mount Chainguide Black/Green, BB Mount