- BMC Fourstroke R 01
- S
- Stack 584, Reach 437
- Specialized Epic 9
- S
- Stack 594, Reach 420
Stack: 10 mm taller
Reach: 17 mm shorter
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BMC Fourstroke R 01 vs Specialized Epic 9: which bike is right for you?
Compare ride character, intended rider, geometry, and fit. Add your measurements to see which bike suits you better and which size to choose on each.
Fit verdict: the frame positions differ enough to matter. Compare the geometry below, then use your measurements to identify the safer size and setup.
In one look
BMC Fourstroke R 01: cross-country geometry. Specialized Epic 9: cross-country geometry.
- 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.
- The Specialized Epic 9 cockpit runs about 12 mm shorter, a noticeably more compact position.
These two split on bottom bracket. Which bike is which, and what it costs you in servicing and on the ride, is in the full comparison.
We compare differences at frame and model level. Components, current price, and availability depend on the exact build and seller.
What do you need from this comparison?
Start with the decision you are making. We will ask only for the details needed to answer it.
Step 1/1
What are you trying to understand?
Your answer changes the questions, result, and whether a paid report is relevant.
Fit and size differences
Geometry can separate these bikes: matched sizes create a meaningfully different position.
Median difference across matched sizes: stack 11 mm, reach 12 mm.
For a personal answer, the fit-and-size path uses your measurements to show only the relevant frame sizes. The full chart remains available as a reference.
View geometry for every size
How do BMC Fourstroke R 01 and Specialized Epic 9 sizes compare?
See the closest size matches and the differences in stack, reach, and riding position.
- BMC Fourstroke R 01
- M
- Stack 592, Reach 457
- Specialized Epic 9
- M
- Stack 604, Reach 450
Stack: 12 mm taller
Reach: 7 mm shorter
- BMC Fourstroke R 01
- L
- Stack 600, Reach 477
- Specialized Epic 9
- L
- Stack 618, Reach 480
Stack: 18 mm taller
Reach: 3 mm longer
- BMC Fourstroke R 01
- XL
- Stack 615, Reach 500
- Specialized Epic 9
- L
- Stack 618, Reach 480
Stack: 3 mm taller
Reach: 20 mm shorter
The same size label can create a different position on each frame. Stack and reach are one part of the decision; the personalized comparison connects them to your body and each bike’s ride character.
FAQ
- Can the same rider take different sizes on these two bikes?
- Yes. Frame labels are not standardized, so the same rider may need different sizes. This comparison deliberately avoids a generic matched-size answer and hands your measurements to Bike Fit instead.
- 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.
TrainCraft plans
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