Specialized Epic Comp 29er 2012

Its M5-aluminum frame descends and climbs superbly thanks to 100mm of Specialized's legendary Brain-controlled FSR suspension that delivers unparalleled pedal power and control.
You'll be amazed.
The Brain is the mastermind behind Specialized's ultra-efficient suspension designs. It automatically turns the suspension "on" and "off" almost instantaneously.It consists of an inertia valve mounted inside a near-vertical cylinder near the rear axle. The inertia valve controls the shock's ability to compress; the resulting system responds to terrain input (bumps and dips), but not to rider input (pedaling). By using the blue dial on top of the Brain cylinder, you can control the breakaway threshold of the inertia valve in your Brain from ultra rigid and efficient to super plush and active and anywhere in between. So you can set up your bike to climb and sprint like a hardtail and still absorb bumps for maximum control over rough terrain; the ideal combination for parlaying all your efforts.