The K-EDGE Elevate Race Chain Guide design gives full coverage protection and automatic chain reseating while removing the risk of chain binding on the backpedal. The updated design reduces weight by 26% is more aero and easier to install. Designed for greater compatibility with 11 12 and 13-speed drivetrains and larger cassettes. K-EDGE's Opposing Locking System(TM) 2.0 let's you set it and forget it for a lifetime of zero dropped chains. Made In USA with Lifetime WarrantyDesigned to allow the derailed chain to ride above the front chainring teeth avoiding the risk and force of binding during a derailed backpedalAutomatically reseats the chain on the chainring upon forward pedaling to take out the most dangerous effects of a derailed chain in the 1x system leaving the rider to simply focus on the rideK-EDGE Opposing Locking System 2.0 offers three easily accessible screws to infinitely adjust and lock in the chain guide into positionFull aluminum cage design protects inside and outside chain drops