Which size or configuration labels have geometry for the 2017 Norco Valence Disc A Tiagra RS405 Forma?

Geometry is listed for 45.5, 48, 50.5, 53, and 55.5.

What are the reach and stack of the 2017 Norco Valence Disc A Tiagra RS405 Forma in size 50.5?

In size 50.5, reach is 371 mm and stack is 545 mm.

What is the head tube angle of the 2017 Norco Valence Disc A Tiagra RS405 Forma?

The head tube angle is 71.25 degrees in size 50.5.

What does the 2017 Norco Valence Disc A Tiagra RS405 Forma ship with?

The stock build includes Shimano Tiagra ST-RS405 10spd, Schwalbe Lugano 700x28c - Black, Shimano Tiagra ST-RS405, and Norco Endurance - Black.

Which years of the Norco Valence Disc are on Quiver?

Quiver has the Norco Valence Disc for 2017 and 2018.

2017

2017 Norco Valence Disc A Tiagra RS405 Forma

Reach 359 to 384 mm, stack 517 to 584 mm. The Valence Disc A Tiagra RS405 Forma build comes with Shimano Tiagra RD-4700 shifting and Schwalbe Lugano 700x28c - Black tires.

Compare geometry

Source: norco.com. Checked Oct 24, 2026.

Key facts

Brand: Norco
Model: Valence Disc
Model year: 2017
Frame: A Tiagra RS405 Forma
Geometry labels: 45.5, 48, 50.5, 53, and 55.5
Drivetrain: Shimano Tiagra RD-4700
Geometry: Complete for every size
Source: norco.com
Checked: Oct 24, 2026

Geometry by size

2017 Norco Valence Disc A Tiagra RS405 Forma geometry by size
Measurement	45.5	48	50.5	53	55.5
Reach(mm)	359	365	371	376	384
Stack(mm)	517	529	545	562	584
Head tube angle(°)	70.5	70.75	71.25	72	72.25
Seat tube angle(°)	75	74.75	74.25	73.5	73.25
Wheelbase(mm)	975	986	992	996	1009
BB height(mm)	270	272.5	272.5	275	275
Head tube length(mm)	100	115	130	147.5	170

How to read a geometry chart

Stock build

13 parts

Drivetrain

Shimano Tiagra ST-RS405 10spd

Shifter

Shimano Tiagra RD-4700

Derailleur

Shimano Tiagra CS-4700 11-32T 10 speed

Cassette

Shimano Tiagra CN-4601 10speed

Chain

Shimano Tiagra R4700 50/34T - Black

Crankset

Wheels & Tires

Schwalbe Lugano 700x28c - Black

Tire

Shimano CenterLock Sealed - Black

Hub

Brakes

Shimano Tiagra ST-RS405

Brake

Cockpit

Norco Endurance - Black

Handlebar

Norco Black Stealth

Stem

Norco Ultra-Comfort - Black

Grips

Seatpost & Saddle

Norco Composite 27.2 - UD Carbon Stealth

Seatpost

Norco Road Race Forma - Black

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2017 Norco Valence Disc A Tiagra RS405 Forma?: Geometry is listed for 45.5, 48, 50.5, 53, and 55.5.
What are the reach and stack of the 2017 Norco Valence Disc A Tiagra RS405 Forma in size 50.5?: In size 50.5, reach is 371 mm and stack is 545 mm.
What is the head tube angle of the 2017 Norco Valence Disc A Tiagra RS405 Forma?: The head tube angle is 71.25 degrees in size 50.5.
What does the 2017 Norco Valence Disc A Tiagra RS405 Forma ship with?: The stock build includes Shimano Tiagra ST-RS405 10spd, Schwalbe Lugano 700x28c - Black, Shimano Tiagra ST-RS405, and Norco Endurance - Black.
Which years of the Norco Valence Disc are on Quiver?: Quiver has the Norco Valence Disc for 2017 and 2018.