2027 Trek Roscoe Gen 4 vs 2026 Merida Big Trail
The XLONG is the Merida Big Trail size closest to your XL Trek Roscoe Gen 4. 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 Big Trail
Compared with the Trek Roscoe Gen 4 in XL, the Merida Big Trail in XLONG places the top of the head tube 21 mm lower and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 7 mm longer, which can contribute to stability at speed.
- Frame stack
- −21 mm
- Lower front end
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Trek Roscoe Gen 4, XLMerida Big Trail, XLONGDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Roscoe Gen 4 XL | Merida Big Trail XLONG | Difference |
|---|---|---|---|
| Reach | 500 | 505 | +5 mm |
| Stack | 684 | 663 | −21 mm |
| Head tube angle | 65.0° | 64 | −1.0° |
| Seat tube angle | 77.0° | 76.5 | −0.5° |
| Effective top tube | 655 | 657 | +2 mm |
| Chainstay length | 430 | 435 | +5 mm |
| Wheelbase | 1265 | 1272 | +7 mm |
| BB drop | 61 | 70 | +9 mm |
| BB height | 312 | not listed | |
| Standover | 740 | 729 | −11 mm |
| Seat tube length | 450 | 475 | +25 mm |
| Head tube length | 145 | 130 | −15 mm |
| Fork length | not listed | 551 |
Differences are the Merida Big Trail minus the Trek Roscoe Gen 4. Full charts: 2027 Trek Roscoe Gen 4, 2026 Merida Big Trail.
Where each sits in its class
Trek Roscoe Gen 4Merida Big Trail
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 | Trek Roscoe Gen 47 Gen 4 | Merida Big Trail300 |
|---|---|---|
| Fork | RockShox Recon | SR Suntour XCR34 2CR |
| Shifter | Shimano CUES U6000 | Shimano CUES U4000 |
| Derailleur | Shimano CUES U6000 GS | Shimano CUES U4000 |
| Cassette | Shimano CUES LG300 | SunRace U9 |
| Chain | Shimano LG500 | KMC XGlide |
| Crankset | Shimano CUES U6000 | Shimano CUES UT-400-1 |
| Bottom bracket | Shimano MT501 | Shimano BB-UN101 |
| Tire | Bontrager Gunnison Pro XR | Kenda Regolith |
| Hub | Shimano TC500 | Shimano TC500-B, Shimano TC500-HM-B |
| Rim | Bontrager Line TLR 30 | Merida COMP CC II |
| Rotor | Shimano SM-RT10 | Shimano SM-RT10 |
| Grips | Trek Line | Merida Comp TR |
| Seatpost | TranzX JD-YSI34 | Merida COMP TR II |
| Saddle | Bontrager Verse P3 | Merida Comp SL |
| Frame | not listed | Merida Big Trail TFS II |
| Wheelset | not listed | Merida Comp CC II |
| Brake | not listed | Shimano MT200 |
| Handlebar | not listed | Merida Comp TR II |
| Stem | not listed | Merida Comp TR |
| Headset | not listed | Acros ICR EXTERNAL neck |
| Dropper post | not listed | Merida COMP TR II |
Know what is on every bike.
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