K-EDGE 1x Race Chain Guide The K-EDGE 1x Race Chain Guide was designed for 1x chain retention under the most abusive conditions. 1x drive-trains are here to stay, but even with all the advancements in 1x tech, a dropped chain can't be left out of the equation. Whether on the group ride, grinding through Kansas, or the last km of Milan San Remo K-EDGE has you covered with K-Edge's most dependable guide yet. This chain guide was Tested for all 1x drive-train applications: Gravel, Cyclocross, Mountain bike, and Road with success so you can rest assured your chain will stay on no matter riding conditions. Features Designed for chain retention under the most abusive conditions Specifically designed in partnership with Trek Segfredo and Telnet Fidea Tested for all 1x drive-train applications: Gravel, Cyclocross, Mountain bike, and Road Built to resist the derailed chain of a world tour sprinter powering under load CNC Machined from 6061-T6 Aluminum (no plastic parts)Stainless Steel Hardware for maximum strength and durability Weight: 60. 8 grams (excluding braze-on adapter clamp)Made in Boise, Idaho, USALifetime Guarantee against material or manufacture defects. Damages due to abuse or crashing excluded. | K-Edge | 1X Race Chain Guide | Black | 11 & 12 Speed, 36-52T Chainring