- 27 t. standard chainring comes with integrated trouser guard (standard finish: black anodized, high polished and chrome plated on request)

- for 30- and 34 t. chainrings: trouser guards made of strong aluminum, black anodized available

- for chainrings BCD130 and 38 t. chainrings or bigger: BCD130 trouser guards available. Standard finish: 38-40 t. black anodized, bigger than 40 t. silver powder coated