2026
2026 Trek Roscoe Gen 4
The 2026 Trek Roscoe Gen 4 sits more upright than most trail bikes. Reach 415 to 500 mm, stack 604 to 684 mm. The Roscoe 7 Gen 4 build comes with Shimano CUES U6000 GS shifting and Bontrager Line TLR 30 wheels.
Source: trekbikes.com. Checked .
Key facts
- Brand
- Trek
- Model
- Roscoe
- Model year
- 2026
- Frame
- Gen 4
- Type
- Trail
- Geometry labels
- S, M, ML, L, and XL
- Drivetrain
- Varies by build
- Fork
- Varies by build
- Wheels
- Bontrager Line TLR 30
- Geometry
- Some measurements unavailable
- Source
- trekbikes.com
- Checked
Things to know
Compared with other trail bikes on frame geometry alone.
- Lower bottom bracket than 9 in 10 trail bikes: 61 mm, where most sit near 33.
Geometry by size
| Measurement | S | M | ML | L | XL |
|---|---|---|---|---|---|
| Reach(mm) | 415 | 440 | 455 | 470 | 500 |
| Stack(mm) | 604 | 644 | 648 | 662 | 684 |
| Head tube angle(°) | 65 | 65 | 65 | 65 | 65 |
| Seat tube angle(°) | 73.1 | 73.1 | 74.1 | 74.1 | 75.1 |
| Effective top tube(mm) | 575 | 611 | 614 | 632 | 655 |
| Chainstay length(mm) | 425 | 430 | 430 | 430 | 430 |
| Wheelbase(mm) | 1139 | 1186 | 1203 | 1224 | 1265 |
| BB drop(mm) | 45 | 61 | 61 | 61 | 61 |
| BB height(mm) | Not available | 311 (from the manufacturer) | 311 (from the manufacturer) | 311 (from the manufacturer) | 311 (from the manufacturer) |
| Standover(mm) | 714 | 735 | 740 | 740 | 740 |
| Seat tube length(mm) | 330 | 375 | 400 | 425 | 450 |
| Head tube length(mm) | 90 | 100 | 105 | 120 | 145 |
Requested. Requests decide what we research next.
Stock build
Roscoe 7 Gen 4
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Roscoe 7 Gen 4 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Roscoe 8 Gen 4
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Roscoe 8 Gen 4 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
✓Sources agreeMManufacturer
Quick answers
- Which size or configuration labels have geometry for the 2026 Trek Roscoe Gen 4?
- Geometry is listed for S, M, ML, L, and XL.
- What are the reach and stack of the 2026 Trek Roscoe Gen 4 in size ML?
- In size ML, reach is 455 mm and stack is 648 mm.
- What is the head tube angle of the 2026 Trek Roscoe Gen 4?
- The head tube angle is 65 degrees in every size.
- What does the 2026 Trek Roscoe 7 Gen 4 ship with?
- The stock build includes Trek Roscoe, RockShox Recon Silver, Shimano CUES U6000, and Bontrager Line TLR 30.
- Which years of the Trek Roscoe are on Quiver?
- Quiver has the Trek Roscoe for 2026, 2027, 2025, 2024, 2023, 2021, 2020, 2019, and 2018.
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