Reverse Transformer Trail Chain Guide Being Your Guide A chain guide is designed to keep your chain from falling off during those gnarly descents. The Reverse Transformer Trail Chain Guide is a convertible 6061 aluminum chain guide with a lower bash guard. The upper guide provides a full chain enclosure for no chain drops on 1x drivetrains. The upper can be used with or without the lower part of the guide. Features The bash guard can be used with 28 - 34T (high position) or 36 - 38T (low position) chainrings Convertible 6061 aluminum chain guide with a lower (taco) bash guard Upper guide provides a full chain enclosure for no chain drops on 1x drivetrains | Reverse Components | Reverse Transformer Trail Chain Guide Black