Which size or configuration labels have geometry for the 2021 Jamis HARDLINE C4?

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

What are the reach and stack of the 2021 Jamis HARDLINE C4 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 2021 Jamis HARDLINE C4?

The head tube angle is 65.5 degrees in every size.

What does the 2021 Jamis HARDLINE C4 ship with?

The stock build includes Fox 36 Series Float 27.5” Rhythm, Shimano Deore, Vittoria Mazza 27.5 x 2.4”, and Shimano MT420 4-Piston Hydraulic Disc.

Which years of the Jamis HARDLINE C4 are on Quiver?

Quiver has the Jamis HARDLINE C4 for 2021.

2021

2021 Jamis HARDLINE C4

Reach 418 to 482 mm, stack 585 to 613 mm. The HARDLINE C4 build comes with Vittoria Mazza 27.5 x 2.4” tires.

Compare geometry

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

Key facts

Brand: Jamis
Model: HARDLINE C4
Model year: 2021
Geometry labels: L/19", M/17", S/15.5", and XL/21"
Fork: Fox 36 Series Float 27.5” Rhythm
Geometry: Complete for every size
Checked: Oct 4, 2026

Geometry by size

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

2021 Jamis HARDLINE C4 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

14 parts

Suspension

Fox 36 Series Float 27.5” Rhythm

Fork

Drivetrain

Shimano Deore

ShifterSpeeds 12

Shimano Deore M6100

Cassette

KMC X12

Chain

Race Face Ride

CranksetCrank length 170 / 175mmSpeeds 12

Race Face BSA

Bottom bracket

Wheels & Tires

Vittoria Mazza 27.5 x 2.4”

Tire

Brakes

Shimano MT420 4-Piston 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 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 2021 Jamis HARDLINE C4?: Geometry is listed for L/19", M/17", S/15.5", and XL/21".
What are the reach and stack of the 2021 Jamis HARDLINE C4 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 2021 Jamis HARDLINE C4?: The head tube angle is 65.5 degrees in every size.
What does the 2021 Jamis HARDLINE C4 ship with?: The stock build includes Fox 36 Series Float 27.5” Rhythm, Shimano Deore, Vittoria Mazza 27.5 x 2.4”, and Shimano MT420 4-Piston Hydraulic Disc.
Which years of the Jamis HARDLINE C4 are on Quiver?: Quiver has the Jamis HARDLINE C4 for 2021.

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