Downhill Mountain Bike Frames
Downhill mountain bike frames are designed to provide performance and comfort over difficult terrain that can feature jumps, drops, boulders and divots. As such, they are specially designed specifically for that kind of use.
The typical downhill mountain bike frame is strong, and getting lighter in every generation, though they are typically heavier when designed for all-terrain riding because they have to have added heft and stability to handle obstacles at high rates of speed.
 Rotec RL 9 Downhill Mountain Bike Frame 09  US $950.00
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 Azonic B52 Mountain Bike Frame Downhill Free Ride US $1,530.99
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 Balfa BB7 Downhill Mountain Bike Frame size L Silver US $267.62
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That usually means using alloys, with carbon and aluminum among the more popular. Most frames allow seven or more inches of suspension travel in order to handle the bumps and bruises of the typical course.
In addition, the downhill mountain bike frames have slack head angles, up to 64 degrees in many cases. That extra sag inspires greater traction, but it doesn't make these frames particularly useful for a biked designed for more traditional commuting.
Downhill mountain bike frames are built to go down a mountain, and a good one can make the trip down from the ski lift into a fun experience. But don't try climbing back up a hill with one -- they're not called uphill mountain bike frames for a reason.
