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BMC Roadmachine 01 TWO vs Trek Madone Gen 8: geometry and fit comparison

Matched sizes, stack and reach deltas, and a fit check against your own body instead of guessing from two separate size charts.

2026endurance geometry
BMC Roadmachine 01 TWO
6 sizes: 47, 51, 54, 56, 58, 61
Full size guide
2025race geometry
Trek Madone Gen 8
6 sizes: XS, S, M, ML, L, XL
Full size guide
In one look

The BMC Roadmachine 01 TWO is built as a endurance geometry frame, the Trek Madone Gen 8 as a race geometry frame. The BMC Roadmachine 01 TWO stack is slightly taller, about 9 mm, which is not enough to change the position by itself. The Trek Madone Gen 8 cockpit is slightly longer, by about 6 mm.

Switching from a BMC Roadmachine 01 TWO?

Your closest Trek Madone Gen 8 size, and what will still feel different about the position.

You ride the BMC Roadmachine 01 TWO inTake the Trek Madone Gen 8 inThe position will feel
47S5 mm taller · 8 mm longer
51M4 mm lower · 5 mm longer
54ML8 mm lower · 6 mm longer
56L13 mm lower · 6 mm longer
58XL10 mm lower · 9 mm longer
61XL35 mm lower · 4 mm longerDifferent position

Which one fits you better?

Run the same measurements through both frames. The likely size and the full fit report can differ more than the spec sheets suggest.

Quick size check

What BMC Roadmachine 01 TWO size fits you?

Get an instant frame estimate, then continue into the full fit report to check cockpit reach, bar drop, and setup risks before you buy.

No account needed for this check. The full report keeps this bike preselected.

Quick size check

What Trek Madone Gen 8 size fits you?

Get an instant frame estimate, then continue into the full fit report to check cockpit reach, bar drop, and setup risks before you buy.

No account needed for this check. The full report keeps this bike preselected.

FAQ

Which has the taller front end: BMC Roadmachine 01 TWO or Trek Madone Gen 8?

The BMC Roadmachine 01 TWO stack is slightly taller, about 9 mm, which is not enough to change the position by itself.

Can the same rider take different sizes on these two bikes?

Yes, and it happens often: frame labels are not standardized. Use the matched-size table for geometry, then run the fit check below with your own measurements for each bike.

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