Stemma SL is the new aluminium stem that, combined with the Barra SL handlebar, can integrate up to four cables inside frames designed for integration. This aluminium platform will complement the carbon and carbon monocoque systems already available in the Wilier Triestina catalogue, i.e. 0-Bar, J-Bar, Stemma and Barra. Stemma SL is compatible with 0-Bar and J-Bar thicknesses.