Tell us whether your mountain bikes are aluminum, carbon fiber, steel, or titanium.

By Jeff Barber
August 31, 2025
  1 comments

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Close-up view of a turquoise bicycle frame featuring a black sticker with the chemical elements phosphorus (P), chromium (Cr), and molybdenum (Mo) symbols, indicating material specifications. The background is a soft focus of green foliage.

There are four basic materials that most mountain bike frames are made with: carbon fiber, steel, aluminum, or titanium. Each has its own strengths and weaknesses, though all make for a solid frame choice if used correctly. This week, we want to know which frame materials are represented in your quiver.

Tell us which MTB frame material is your favorite, and why, in the comments below.