Which size or configuration labels have geometry for the 2026 3T Primo2 Shimano?

Geometry is listed for S, M, L, and XL.

What are the reach and stack of the 2026 3T Primo2 Shimano in size L?

In size L, reach is 390 mm and stack is 575 mm.

What is the head tube angle of the 2026 3T Primo2 Shimano?

The head tube angle is 72.5 degrees in size L.

What does the 2026 3T Primo2 Shimano GRX 1x12 ship with?

The stock build includes 3T Primo2, 3T Fango Primo2, Shimano GRX RX610, and Fulcrum Rapid Red 900.

Which years of the 3T Primo2 are on Quiver?

Quiver has the 3T Primo2 for 2026.

2026 3T Primo2 Shimano geometry and specs

Key facts

Brand: 3T
Model: Primo2
Model year: 2026
Frame: Shimano
Type: Gravel
Geometry labels: S, M, L, and XL
Drivetrain: Shimano RD-RX822-SGS GRX
Fork: 3T Fango Primo2
Wheels: Fulcrum Rapid Red 900
Geometry: Some measurements unavailable
Checked: Aug 11, 2026

Things to know

Compared with other gravel bikes on frame geometry alone.

Slacker seat angle than 9 in 10 gravel bikes: 72.5 degrees, where most sit near 73.5.
Shorter chainstays than 9 in 10 gravel bikes: 415 mm, where most sit near 430.

Geometry by size

2026 3T Primo2 Shimano geometry by size
Measurement	S	M	L	XL
Reach(mm)	366	378	390	402
Stack(mm)	517	546	575	604
Head tube angle(°)	69.5	71.1	72.5	72.5
Seat tube angle(°)	72.5	72.5	72.5	72.5
Chainstay length(mm)	415	415	415	415
BB drop(mm)	70	70	70	70
Seat tube length(mm)	463	490	Not available	Not available
Head tube length(mm)	101	125	150	180

Sources agreeNot available

Requested. Requests decide what we research next.

How to read a geometry chart

Stock build

16 parts

Frame

3T Primo2

FrameCategory Gravel

Suspension

3T Fango Primo2

ForkWheel size 700cFront axle / spacing 100x12Brake mount disc

Drivetrain

Shimano GRX RX610

Shifter

Shimano RD-RX822-SGS GRX

DerailleurSpeeds 12Maximum cog 51 tActuation type MechanicalCassette compatibility 10-51T 12-speed SHIMANO MTB cassettesClutchTotal capacity 41 t

Shimano Deore M6100

CassetteSpeeds 12Weight 595 g

Shimano FC-RX610-1

CranksetSpeeds 12

Shimano RX610-1 GRX

Chainring

Wheels & Tires

Fulcrum Rapid Red 900

WheelsetRim material Aluminum

Pirelli Cinturato Adventure

Tire

Brakes

Shimano GRX RX400

BrakePiston count 2Caliper mount Flat Mount

Shimano SM-RT64

RotorWeight 140 g

Cockpit

3T Superergo PRO

Handlebar

3T Apto

StemBar clamp diameter 31.8mmSteerer diameter 1 1/8"

Sealed cartridge

HeadsetStandard (SHIS) 1.125-1.5Bearing type Sealed Cartridge

Seatpost & Saddle

3T Primo

SeatpostClamp style Ritchey

fizik Vento Argo X5

SaddleLength 265mm

Keep your Primo2 Shimano GRX 1x12 in Quiver

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Quick answers

Which size or configuration labels have geometry for the 2026 3T Primo2 Shimano?: Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2026 3T Primo2 Shimano in size L?: In size L, reach is 390 mm and stack is 575 mm.
What is the head tube angle of the 2026 3T Primo2 Shimano?: The head tube angle is 72.5 degrees in size L.
What does the 2026 3T Primo2 Shimano GRX 1x12 ship with?: The stock build includes 3T Primo2, 3T Fango Primo2, Shimano GRX RX610, and Fulcrum Rapid Red 900.
Which years of the 3T Primo2 are on Quiver?: Quiver has the 3T Primo2 for 2026.