The lower guide on the new Gamut USA
S Line chainguides feature a 22x3mm rubber O-ring keeps the system quiet and maintenance free. The O-ring is readily available at any hardware store, but the package comes with a handful of replacements. According to Gamut, test riders have not had any problems with the O-rings wearing out.
2013 Products from Interbike 2012, Part 1 0 of 14