Frame Fork Fox F100 RL Rear Shock Seatpost Front Derailleur Shimano M581 LX Rear Derailleur Crankset Bottom Bracket Shimano M542 Brake Calipers Avid SD-3R - cantilevers Shifters/Levers Cassette Shimano HG-50 Chain SRAM PC-971 w/ Power Link Wheels Handlebars Stem Specialized adjustable rise Saddle The Specialized Epic® is the fastest mountain bike in the world, with a World Championship and a string of World Cup victories to prove it. The standard Epic allows for you to enjoy the best frame available at an affordable price. It is built complete with SRAM and Shimano Components and it features the most famous rear shock in mountain biking, The Brain. The Brain shock is a newly innovative shock that Specialized designed a few years back. It is literally called the Brain because it functions like an intelligent Suspension system where it is stiff and locked on smooth roads and on rough roads it reacts and compresses up to 3" of travel.