Selle Italia has continually built out their line-up, with many new styles to choose from, yet some of our best sellers are the updated options of some of the classic models, several of which have new widths to choose from. The SLR line-up offers several lightweight racing saddle platforms as well as variants that drive price, weight, and comfort. The Flow saddles feature a central cutout for comfort from pressure reduction. Rail material options also factor in. With this Carbon-Keramic rail version, the SLR Flow gets an upgrade to become the Kit Carbonio, and with this Large size, the listed weight is 136 grams, making it among the lightest "wide" saddles Selle Italia offers.

A great advantage of the new rail design is that you have a 7mm x 9mm rail- which actually fits many standard seatpost rail clamping systems, with the vibration damping properties of carbon rails, and maximum strength due to the use of ceramic material in the rail construction. The rails support the saddle differently than titanium rails do, and don't feel compliant, or offer much vertical compliance. By attenuating vibration, the Carbon-Keramic rails limit fatigue from road noise over the course of a long day, but keep the saddle structure stiffer for a more consistent ride quality. Not every rider wants a saddle that gives too much. Ideally you want comfort from fit and other tech, but a saddle that maximizes the energy created during the pedal stroke. A saddle that gives too much is actually limiting that power transmission.

The carbon powered shell is a 70/30 Nylon/carbon blend, which again keeps the shell stiff, but can also conform to your body shape over time. It never gets soft, but does break in. The perforated Fibra-Tek cover is durable, weather resistant, minimizes friction and heat build-up. The S refers to the small size. At 145mm wide at the rear, and 275mm in length, the SLR Kit Carbonio Flow L is a racing saddle for moderately wide sit-bone riders who prefer a minimalist, lightweight, stiff racing saddle with some undercarriage relief (an L2 on the Selle Italia idmatch system). If you have always loved the base SLR, but you want a firmer platform, lighter weight, and the benefits of the 7mm x 9mm oval Carbon-Keramic rails, the SLR Kit Carbonio Flow L Saddle was designed for you.