Ideal for riders who like to brave the elements, this version features Shimano's stunning Sil-tec surface treatment which provides ultra-low friction & superior longevity in all-weather conditions. Designed to be quick & simple to install, this is a perfect choice of upgrade for riders who want a tough component when dominating on some of the most aggressive trails. Technologies: Sil-Tec: SHIMANO’s ultra-low friction surface treatment. Superior to simple coating, SIL-TEC is an advanced plating process that improves system performance through the use of imbedded fluorine particles. SIL-TEC products run smoother & wear longer in all conditions. Hyperglide+: mproved chain retention encourages more aggressive all-terrain riding & relieves chain-issue anxiety. Smoother drivetrain transmission & enhanced shifting performance sharpens riders’ concentration & improves acceleration. Better chain engagement cuts abrasion, reduces maintenance, & lengthens the lifespan of the chain.