2026
2026 Transition Sentinel Alloy
The 2026 Transition Sentinel Alloy sits more aggressive than most trail bikes, with a slacker head angle and a shorter rear center. Reach 430 to 505 mm, stack 615 to 642 mm. The Sentinel Alloy Eagle 70 build comes with SRAM Eagle 70 Transmission shifting and WTB ST wheels.
Source: transitionbikes.com. Checked .
Key facts
- Brand
- Transition
- Model
- Sentinel
- Model year
- 2026
- Frame
- Alloy
- Type
- Trail
- Geometry labels
- S, M, L, and XL
- Drivetrain
- Varies by build
- Fork
- Varies by build
- Rear shock
- Varies by build
- Wheels
- Varies by build
- Geometry
- Some measurements unavailable
- Source
- transitionbikes.com
- Checked
Geometry by size
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Reach(mm) | 430 | 455 | 480 | 505 |
| Stack(mm) | 615 | 621 | 633 | 642 |
| Head tube angle(°) | 64.0 | 64.0 | 64.0 | 64.0 |
| Seat tube angle(°) | 73.0 | 73.0 | 73.0 | 73.0 |
| Effective top tube(mm) | 549 | 577 | Not available | 632 |
| Chainstay length(mm) | 442 | 442 | 442 | 448 |
| Wheelbase(mm) | 1208 | 1237 | 1267 | 1302 |
| BB drop(mm) | 25 | 25 | 25 | 25 |
| Standover(mm) | 690 | 690 | 695 | 705 |
| Seat tube length(mm) | 360 | 390 | 430 | 460 |
| Head tube length(mm) | 100 | 110 | 120 | 130 |
Requested. Requests decide what we research next.
Stock build
Sentinel Alloy Eagle 70
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Sentinel Alloy Eagle 70 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
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Sentinel Alloy Eagle 90
Frame
Suspension
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
Keep your Sentinel Alloy Eagle 90 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 Transition Sentinel Alloy?
- Geometry is listed for S, M, L, and XL.
- What are the reach and stack of the 2026 Transition Sentinel Alloy in size L?
- In size L, reach is 480 mm and stack is 633 mm.
- What is the head tube angle of the 2026 Transition Sentinel Alloy?
- The head tube angle is 64.0 degrees in every size.
- What does the 2026 Transition Sentinel Alloy Eagle 70 ship with?
- The stock build includes Transition Sentinel, RockShox Psylo, SRAM Eagle 70 Transmission, and WTB ST.
- Which years of the Transition Sentinel are on Quiver?
- Quiver has the Transition Sentinel for 2026.
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