The frame is among the lightest that weve ever made & its been constructed from our superlative FACT 9r carbon fibre. Its stiffness levels are also off the charts & compared to the sl 4 iteration of yesteryear youll experience a whole new faster & more efficient geometry. Through some advanced dedicated engineering however weve managed to keep the same fit feel & position that weve all come to love from the sl 4s womens endurance geometry. Of course youre probably thinking "get on to the suspension thing up front." we call it future shock & essentially its a piston in the head tube with 20mm of travel. We developed this technology in partnership with McLaren applied technologies & the result of this are a host of drastic performance improvements namely in the vertical compliance department. Without giving a physics lecture we found that focusing on vertical compliance instead of fork splay meant that we could improve smoothness speed & comfort in one fell swoop. & of all the bikes that weve tested with our rolling efficiency model the new Ruby outperforms anything on the market. Lastly we specd it with a host of components that blur the lines between steadfast reliability & outright performance like Shimano Tiagra shifting powerful rs 505 hydraulic disc brakes strong Axis Sport disc wheels & a womens-specific saddle. Featuring our rider-first engineered design that ensures every frame size has the same legendary responsiveness & smooth ride quality that youd expect from a ruby. The FACT 9r frameset holds its own with our highest-end carbon offerings, with the ideal blend of light overall weight & targeted stiffness, while the all-new future shock "suspension" system at the cockpit delivers a revolutionary degree of comfort & control. Shimano S rs 505 hydraulic disc brakes deliver plenty of stopping power, along with the superior modulation that hydraulic disc brakes are known for. With Shimano Tiagra taking the reins on shifting, youll experience crisp shifts for many miles to come.