Shimano 105 FC-R7100 12 Speed Chainrings ENVEMARCH the Service Course SL 80

the Service Course SL 80 Ergo weighs 275g for a 42cm-wide bar

CNC machined aluminum dispenser with brass internals

so common in adventure riding and touring

is a great additive for a few reasons

and offers easy side and vertical entry

Shimano 105 FC-R7100 12 Speed Chainrings ENVEMARCH the Service Course SL 80Chainring for the Shimano 105 FC R7100 2x12 speed crankset. Also compatible with the Ultegra FC R8100 crank Features The chainrings with 110 mm bolt circle diameter ensure fast as well as smooth shifting. For reasons of weight optimization, the outer models also feature a Hollowglide construction, which can still come up with an extremely stiffness. Specifications Outer: aluminum (anodized), glass fiber reinforced plastic (GFRP) Inner: aluminum