Which size or configuration labels have geometry for the 2020 Jamis HARDLINE A1?

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

What are the reach and stack of the 2020 Jamis HARDLINE A1 in size S/15.5"?

In size S/15.5", reach is 418 mm and stack is 585 mm.

What is the head tube angle of the 2020 Jamis HARDLINE A1?

The head tube angle is 65.5 degrees in every size.

What does the 2020 Jamis HARDLINE A1 ship with?

The stock build includes Fox 36 Float 27.5” Rhythm, Shimano XT, Race Face ARC 30 27.5" tubeless rims, and Shimano XT M8120 4-piston Ice-Tech hydraulic disc.

Which years of the Jamis HARDLINE A1 are on Quiver?

Quiver has the Jamis HARDLINE A1 for 2020 and 2019.

2020

2020 Jamis HARDLINE A1

Reach 418 to 482 mm, stack 585 to 613 mm. The HARDLINE A1 build comes with Race Face ARC 30 27.5" tubeless rims wheels.

Compare geometry

Source: bikecatalogs.com. Checked Oct 4, 2026.

Key facts

Brand: Jamis
Model: HARDLINE A1
Model year: 2020
Geometry labels: L/19", M/17", S/15.5", and XL/21"
Fork: Fox 36 Float 27.5” Rhythm
Wheels: Race Face ARC 30 27.5" tubeless rims
Geometry: Complete for every size
Checked: Oct 4, 2026

Geometry by size

Geometry drawing, size M/17", to scale.

2020 Jamis HARDLINE A1 geometry by size
Measurement	L/19"	M/17"	S/15.5"	XL/21"
Reach(mm)	461	439	418	482
Stack(mm)	604	595	585	613
Head tube angle(°)	65.5	65.5	65.5	65.5
Seat tube angle(°)	74	74	74	74
Effective top tube(mm)	635	610	585	660
Chainstay length(mm)	429	429	429	429
Wheelbase(mm)	1208	1182	1157	1233
BB drop(mm)	13.5	13.5	13.5	13.5
Standover(mm)	749	745	751	765
Head tube length(mm)	120	110	100	130

How to read a geometry chart

Stock build

15 parts

Suspension

Fox 36 Float 27.5” Rhythm

Fork

Drivetrain

Shimano XT

Shifter

Shimano SLX M7100

Cassette

KMC X12

Chain

Race Face Aeffect

CranksetChainring interface CinchSpindle / BB interface Cinch

Race Face BSA

Bottom bracket

Wheels & Tires

Race Face ARC 30 27.5" tubeless rims

Wheelset

Vittoria Martello 27.5 x 2.35”

Tire

Brakes

Shimano XT M8120 4-piston Ice-Tech hydraulic disc

Brake

Cockpit

Race Face Aeffect R

HandlebarClamp diameter 35mmWidth 780mm

Race Face Aeffect-R

Stem

Jamis Lock-On

Grips

FSA Orbit IS Integrated

Headset

Seatpost & Saddle

KS Rage Dropper

Seatpost

WTB Volt

SaddleWidth 135 / 142 / 150mmLength 265mm

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Quick answers

Which size or configuration labels have geometry for the 2020 Jamis HARDLINE A1?: Geometry is listed for L/19", M/17", S/15.5", and XL/21".
What are the reach and stack of the 2020 Jamis HARDLINE A1 in size S/15.5"?: In size S/15.5", reach is 418 mm and stack is 585 mm.
What is the head tube angle of the 2020 Jamis HARDLINE A1?: The head tube angle is 65.5 degrees in every size.
What does the 2020 Jamis HARDLINE A1 ship with?: The stock build includes Fox 36 Float 27.5” Rhythm, Shimano XT, Race Face ARC 30 27.5" tubeless rims, and Shimano XT M8120 4-piston Ice-Tech hydraulic disc.
Which years of the Jamis HARDLINE A1 are on Quiver?: Quiver has the Jamis HARDLINE A1 for 2020 and 2019.