2020
2020 Jamis PORTAL A2
Reach 418 to 482 mm, stack 606 to 634 mm. The PORTAL A2 build comes with SRAM SX Eagle shifting and WTB ST i25 TCS 29” tubeless rims wheels.
Source: bikecatalogs.com. Checked .
Key facts
- Brand
- Jamis
- Model
- PORTAL A2
- Model year
- 2020
- Geometry labels
- L/19", M/17", S/15.5", and XL/21"
- Drivetrain
- SRAM SX Eagle
- Rear shock
- RockShox Deluxe R DebonAir Select
- Geometry
- Complete for every size
- Checked
Geometry by size
| Measurement | L/19" | M/17" | S/15.5" | XL/21" |
|---|---|---|---|---|
| Reach(mm) | 461 | 439 | 418 | 482 |
| Stack(mm) | 625 | 615 | 606 | 634 |
| Head tube angle(°) | 67.5 | 67.5 | 67.5 | 67.5 |
| Seat tube angle(°) | 74.5 | 74.5 | 74.5 | 74.5 |
| Effective top tube(mm) | 635 | 610 | 585 | 660 |
| Chainstay length(mm) | 437 | 437 | 437 | 437 |
| Wheelbase(mm) | 1198 | 1173 | 1148 | 1224 |
| BB drop(mm) | 33 | 33 | 33 | 33 |
| Standover(mm) | 754 | 749 | 754 | 774 |
| Head tube length(mm) | 125 | 115 | 105 | 135 |
Stock build
17 parts
Suspension
RockShox Revelation RC 29”
RockShox Deluxe R DebonAir Select
Drivetrain
Wheels & Tires
Brakes
Cockpit
Seatpost & Saddle
WTB Volt
Keep your PORTAL A2 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 2020 Jamis PORTAL A2?
- Geometry is listed for L/19", M/17", S/15.5", and XL/21".
- What are the reach and stack of the 2020 Jamis PORTAL A2 in size S/15.5"?
- In size S/15.5", reach is 418 mm and stack is 606 mm.
- What is the head tube angle of the 2020 Jamis PORTAL A2?
- The head tube angle is 67.5 degrees in every size.
- What does the 2020 Jamis PORTAL A2 ship with?
- The stock build includes RockShox Revelation RC 29”, SRAM SX Eagle, WTB ST i25 TCS 29” tubeless rims, and Magura MT4 hydraulic disc.
- Which years of the Jamis PORTAL A2 are on Quiver?
- Quiver has the Jamis PORTAL A2 for 2020, 2021, and 2019.
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app



