BMC Fourstroke R 01 vs Specialized Epic 9: 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.
The BMC Fourstroke R 01 is built as a cross-country geometry frame, the Specialized Epic 9 as a cross-country geometry frame. The Specialized Epic 9 cockpit runs about 12 mm shorter, a noticeably more compact position. Across matched sizes, the Specialized Epic 9 stack sits about 11 mm taller than the BMC Fourstroke R 01, which generally means a more upright position before spacers.
Switching from a BMC Fourstroke R 01?
Your closest Specialized Epic 9 size, and what will still feel different about the position.
| You ride the BMC Fourstroke R 01 in | Take the Specialized Epic 9 in | The position will feel |
|---|---|---|
| S | S | 10 mm taller · 17 mm shorterDifferent position |
| M | M | 12 mm taller · 7 mm shorter |
| L | L | 18 mm taller · 3 mm longerDifferent position |
| XL | L | 3 mm taller · 20 mm shorterDifferent 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.
What BMC Fourstroke R 01 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.
What Specialized Epic 9 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 Fourstroke R 01 or Specialized Epic 9?
Across matched sizes, the Specialized Epic 9 stack sits about 11 mm taller than the BMC Fourstroke R 01, which generally means a more upright position before spacers.
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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