Some bike manufacturers, such as Cannondale, make their own shocks. Most XC bikers prefer clipless pedals. Clipless is a misnomer, because the pedals actually allow the rider to place a cleat attached to the sole of the shoe into a spring-loaded clip. This is known as clipping in. These pedals hold the foot in the optimum position for speed and power.
Clipless pedals require special shoes to which a cleat can be screwed.
If you buy shoes at the same time you buy your bike, the shop will usually install the cleats for you. But it s easy to do yourself. You ll need a razor to trim the sole of the shoe and an Allen wrench to attach the cleats, which come with your pedals. Along with your front and rear gears, the front and rear derailleurs and your shifters make up the drivetrain. Make sure the derailleurs move the chain quickly from one gear to the next with no drag.