Selle Italia SLR Boost Kit Carbon Superflow size S3 Black The SLR Boost Kit Carbonio Superflow, with CarboKeramic Rail ∅7×9 mm, revolutionizes and renews the unmistakable values of a great classic like the SLR. The perfect combination of comfort and performance, which has always distinguished this model, is further underlined by its compact shape and unprecedented lightness. Weight: S 122 g Rail: Carbon/Keramic Ø7x9 mm Dimensions: S 130x248 mm Category: Performance Please don't hesitate to contact me with any questions Happy bidding