Which size or configuration labels have geometry for the 2019 Jamis PORTAL A1+?

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 A1+ 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 A1+?

The head tube angle is 67.5 degrees in every size.

What does the 2019 Jamis PORTAL A1+ ship with?

The stock build includes Fox 34 Float 29” Rhythm, Shimano XT, Mavic XA35 27.5” tubeless wheels, and Magura Trail Sport hydraulic disc.

Which years of the Jamis PORTAL A1+ are on Quiver?

Quiver has the Jamis PORTAL A1+ for 2019.

2019

2019 Jamis PORTAL A1+

Reach 397 to 482 mm, stack 597 to 634 mm. The PORTAL A1+ build comes with Mavic XA35 27.5” tubeless wheels.

Compare geometry

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

Key facts

Brand: Jamis
Model: PORTAL A1+
Model year: 2019
Geometry labels: L/19", M/17", S/15.5", XL/21", and XS/14.5"
Fork: Fox 34 Float 29” Rhythm
Wheels: Mavic XA35 27.5” tubeless wheels
Geometry: Complete for every size
Checked: Oct 3, 2026

Geometry by size

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

2019 Jamis PORTAL A1+ 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

Fox 34 Float 29” Rhythm

Fork

Drivetrain

Shimano XT

ShifterSpeeds 11

Shimano SLX M7000

Cassette

KMC X-11

ChainSpeeds 11

Race Face Aeffect

CranksetChainring interface CinchSpindle / BB interface Cinch

Race Face BSA

Bottom bracket

Wheels & Tires

Mavic XA35 27.5” tubeless wheels

Wheelset

Vittoria Martello 27.5 x 2.8”

Tire

Brakes

Magura Trail Sport hydraulic disc

Brake

Cockpit

Race Face Aeffect

HandlebarWidth 780mm

Race Face Aeffect

Stem

Jamis Lock-On

Grips

FSA Orbit 1.5 Zero-Stack internal cup

Headset

Seatpost & Saddle

KS E20i 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 A1+?: 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 A1+ 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 A1+?: The head tube angle is 67.5 degrees in every size.
What does the 2019 Jamis PORTAL A1+ ship with?: The stock build includes Fox 34 Float 29” Rhythm, Shimano XT, Mavic XA35 27.5” tubeless wheels, and Magura Trail Sport hydraulic disc.
Which years of the Jamis PORTAL A1+ are on Quiver?: Quiver has the Jamis PORTAL A1+ for 2019.

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