Shimanoraceface 1x11 speed drivetrainthe shimano slxraceface drivetrain is the perfect combination of performance and durability with the slx shadow plus rear derailleur to cancel out the chain slap all powered by slx shifters the 1x11 speed system is driven by a set of raceface ride cranks with their cnc machined cranks alloy arms and a 30t narrow wide chainring to reduce weight and maintain strength all of these will ensure the classic shimano reliable shifting and performance but keep