Why is carbon fiber so expensive? Revelations about this much-misunderstood material

Why do carbon fiber bikes cost so much? What's this material really made of and can a repaired frame ever be judged safe? We lift the lid on carbon fiber and question its sustainability

Carbon fiber bottom bracket
(Image credit: Getty Images)

Carbon fiber is often considered a superior material for bicycle frames because it is strong, light, and relatively easily fabricated to be super stiff in one direction yet compliant in another. Despite its popularity, it’s not a material that’s well understood. 

Why is it so expensive? Why was it invented? Is it repairable? Will it wreck the planet? Let’s find out.

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