The 300 was designed knowing that the road wears down the body and the mind. If you suffer the whole ride you aren't going to feel strong physically, and therefore, mentally you will feel defeated.
We gave the 300 the right mix performance and comfort so that you are thinking about crossing the finish line, not worrying about falling off the back.
Stiffness VS. Comfort
The word "stiff" is used a lot when talking about frames. It refers to how much the frame flexes when force is applied to the pedals. The stiffer a frame is the less it flexes and the more power is transferred, from the rider, through the bike, to the sweet spot where the rubber meets the road. To make the 300 stiff yet comfortable we use a with mixture of high modulus carbon and intermediate modulus carbon. The rigid properties of the high modulus carbon are applied to the areas of the frame that we want to be stiff, the bottom bracket for example. Where we want the frame to be more resilient, we use intermediate modulus carbon, which has more elastic characteristics. Doing this gives the 300 its comfortable ride quality and keeps the rider feeling fresher longer.
Built for long rides the 300 uses aerodynamic to minimize air friction and increase your efficiency. This is exemplified in the shape of the seat tube. It is designed so that the rear wheel can tuck in behind it, significantly reducing the drag.
PF30 Bottom Bracket
"This is a new design led by SRAM. It's all the best from BB30 and Press-Fit bottom brackets in one captivating package. This bottom bracket is designed for 30mm spindle cranksets. The key difference with PressFit 30 is how the bearings are fitted into the frame. Bearings are housed in nylon cups which will be pressed into the frames bottom bracket shell. PressFit 30 will feature an integrated seal, pre-assembled into the cups, to further prolong bearing life. Frames will need a 46mm inner-diameter bottom bracket shell to accommodate this system. PressFit 30 for road will require a 68mm wide shell while PressFit 30 for MTB will require a 73mm wide shell. Advantages: Huge weight savings, narrow Q-factor, more ankle clearance, greater bearing durability, stiffer/stronger crank construction, simple installation. Allows for larger diameter frame tubes increasing frame stiffness."-SRAM