2020 Specialized Stumpjumper ST Alloy 27.5 vs 2021 Merida ONE-FORTY
The S is the Merida ONE-FORTY size closest to your XS Specialized Stumpjumper ST Alloy 27.5. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Merida ONE-FORTY
Compared with the Specialized Stumpjumper ST Alloy 27.5 in XS, the Merida ONE-FORTY in S places the top of the head tube 6 mm higher and 10 mm further forward, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- +6 mm
- Higher front end
- Frame reach
- +10 mm
- Longer frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- −0.2°
- About the same head angle
- Chainstays
- +3 mm
- Longer: more planted
The two frames
Specialized Stumpjumper ST Alloy 27.5, XSMerida ONE-FORTY, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Stumpjumper ST Alloy 27.5 XS | Merida ONE-FORTY S | Difference |
|---|---|---|---|
| Reach | 405mm | 415 | +10 mm |
| Stack | 581mm | 587 | +6 mm |
| Head tube angle | 66.5° | 66.3 | −0.2° |
| Seat tube angle | 76.5° | 75 | −1.5° |
| Chainstay length | 432mm | 435 | +3 mm |
| Wheelbase | 1127mm | 1144 | +17 mm |
| BB drop | 28mm | 21 | −7 mm |
| BB height | 325mm | not listed | |
| Standover | 742mm | 708 | −34 mm |
| Seat tube length | 380mm | 410 | +30 mm |
| Fork length | 522mm | 542 | +20 mm |
| Head tube length | 100mm | 95 | −5 mm |
| Effective top tube | not listed | 572 |
Differences are the Merida ONE-FORTY minus the Specialized Stumpjumper ST Alloy 27.5. Full charts: 2020 Specialized Stumpjumper ST Alloy 27.5, 2021 Merida ONE-FORTY.
Where each sits in its class
Specialized Stumpjumper ST Alloy 27.5Merida ONE-FORTY
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Stumpjumper ST Alloy 27.5 | Merida ONE-FORTY400 |
|---|---|---|
| Frame | not listed | Merida ONE-FORTY LITE |
| Fork | not listed | SR Suntour Aion35 EVO LOR |
| Rear shock | not listed | SR Suntour Unair TR LOR8 |
| Shifter | not listed | Shimano SL-MT500-IL |
| Derailleur | not listed | Shimano Deore M5100 Shadow+ |
| Cassette | not listed | Shimano Deore M5100 |
| Chain | not listed | KMC X11 NPBK |
| Crankset | not listed | Shimano Deore M5100 |
| Chainring | not listed | 32T |
| Bottom bracket | not listed | Shimano MT500-PA pressfit |
| Wheelset | not listed | Merida Comp TR |
| Tire | not listed | Kenda Regolith |
| Hub | not listed | Shimano MT400-B |
| Rim | not listed | Merida COMP TR |
| Brake | not listed | Tektro M275 |
| Rotor | not listed | Shimano SM-RT10 |
| Handlebar | not listed | Merida EXPERT CC |
| Stem | not listed | Merida EXPERT CC |
| Grips | not listed | Merida COMP EC |
| Headset | not listed | Merida M2339 Neck |
| Seatpost | not listed | Merida COMP TR |
| Saddle | not listed | Merida COMP CC |
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