Which size or configuration labels have geometry for the 2019 Jamis PORTAL A2?

Geometry is listed for L/19", M/17", S/15.5", XL/21", and XS/14.5".

What are the reach and stack of the 2019 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 2019 Jamis PORTAL A2?

The head tube angle is 67.5 degrees in every size.

What does the 2019 Jamis PORTAL A2 ship with?

The stock build includes RockShox Revelation RC 29”, Shimano SLX, WTB ST i25 TCS 29” tubeless rims, and Shimano MT500 hydraulic disc.

Which years of the Jamis PORTAL A2 are on Quiver?

Quiver has the Jamis PORTAL A2 for 2019, 2021, and 2020.

2019

2019 Jamis PORTAL A2

Reach 397 to 482 mm, stack 597 to 634 mm. The PORTAL A2 build comes with WTB ST i25 TCS 29” tubeless rims wheels.

Compare geometry

Source: bikecatalogs.com. Checked Oct 3, 2026.

Key facts

Brand: Jamis
Model: PORTAL A2
Model year: 2019
Geometry labels: L/19", M/17", S/15.5", XL/21", and XS/14.5"
Fork: RockShox Revelation RC 29”
Wheels: WTB ST i25 TCS 29” tubeless rims
Geometry: Complete for every size
Checked: Oct 3, 2026

Geometry by size

Geometry drawing, size S/15.5", to scale.

2019 Jamis PORTAL A2 geometry by size
Measurement	L/19"	M/17"	S/15.5"	XL/21"	XS/14.5"
Reach(mm)	461	439	418	482	397
Stack(mm)	625	615	606	634	597
Head tube angle(°)	67.5	67.5	67.5	67.5	67.5
Seat tube angle(°)	74.5	74.5	74.5	74.5	74.5
Effective top tube(mm)	635	610	585	660	560
Chainstay length(mm)	437	437	437	437	437
Wheelbase(mm)	1198	1173	1148	1224	1122
BB drop(mm)	33	33	33	33	33
Standover(mm)	754	749	754	774	731
Head tube length(mm)	125	115	105	135	95

How to read a geometry chart

Stock build

15 parts

Suspension

RockShox Revelation RC 29”

Fork

Drivetrain

Shimano SLX

Shifter

Shimano SLX M7000

Cassette

KMC X-11

ChainSpeeds 11

Race Face Ride

CranksetCrank length 170 / 175mmSpeeds 12

Race Face BSA

Bottom bracket

Wheels & Tires

WTB ST i25 TCS 29” tubeless rims

Wheelset

Vittoria Martello 29 x 2.35”

Tire

Brakes

Shimano MT500 hydraulic disc

Brake

Cockpit

Race Face Ride

HandlebarWidth 760mm

Race Face Ride

StemBar clamp diameter 31.8mmSteerer diameter 1 1/8"Rise 6°Material Aluminum

Jamis Lock-On

Grips

FSA Orbit 1.5 Zero-Stack internal cup

Headset

Seatpost & Saddle

KS E10i Internal Dropper

Seatpost

WTB Volt

SaddleWidth 135 / 142 / 150mmLength 265mm

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Quick answers

Which size or configuration labels have geometry for the 2019 Jamis PORTAL A2?: Geometry is listed for L/19", M/17", S/15.5", XL/21", and XS/14.5".
What are the reach and stack of the 2019 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 2019 Jamis PORTAL A2?: The head tube angle is 67.5 degrees in every size.
What does the 2019 Jamis PORTAL A2 ship with?: The stock build includes RockShox Revelation RC 29”, Shimano SLX, WTB ST i25 TCS 29” tubeless rims, and Shimano MT500 hydraulic disc.
Which years of the Jamis PORTAL A2 are on Quiver?: Quiver has the Jamis PORTAL A2 for 2019, 2021, and 2020.