Threshold A Tiagra

$1599 CAD

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Bike Sizing Charts

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  • Threshold A Tiagra
    Threshold A Tiagra
  • Threshold A Tiagra
    Threshold A Tiagra
  • Threshold A Tiagra
    Threshold A Tiagra
  • Threshold A Tiagra
    Threshold A Tiagra


Developed amid the rugged landscape and abundant precipitation of Canada’s Pacific Coast, the new Threshold Aluminum is perfect for any rider looking to get down and dirty at their first cross race. Featuring the same race-proven geometry and ARC technology of the Threshold Carbon, the Threshold Aluminum delivers race-ready performance along with all the versatility you expect from a ’cross machine.

The toughest riders don’t shy away from harsh weather: they embrace it. Rain, wind, sand and mud? Bring it on. No one said bike racing was supposed to be easy.


Road Disc Brakes
Road Disc Brakes

Norco Bicycle Designer Terry Brown explains why disc brakes on road bikes are the future. They offer the rider better control, modulation and lever feedback,... [read more] resulting in a more confident ride.

Road Disc Brakes is also featured on:

ARC Race
ARC Race

Applied Road Compliance (ARC) technology optimizes the vertical compliance to lateral rigidity ratio for race and endurance applications. ARC Race seat stays... [read more] are slender and feature a less pronounced bow shape that still delivers effective road vibration dampening. Chain stays are broad and extremely stiff to deliver maximum pedaling efficiency, and they are engineered to be slightly shorter to deliver a highly responsive ride experience.

ARC Race is also featured on:

Power Chassis
Power Chassis

The Power Chassis is a complete pedaling platform designed to convert energy from a rider's whole body into forward momentum. A tapered head tube, an oversiz... [read more]ed hydroformed down tube, an oversized super-stiff bottom bracket shell, and an especially broad set of chain stays, conduct energy directly from cranks through to the back wheel where they are converted into forward thrust.

Power Chassis is also featured on:


Our GIZMO internal cable routing system keeps out water and debris, prevents any rattling, and allows for easy setup and maintenance.

... [read more]

Gizmo is also featured on:

Road Disc Brakes

Road Disc Brakes

ARC Race

ARC Race

Power Chassis

Power Chassis




Small PartsCompare
  • Frameset


    Threshold X6 Double Butted SS Frame 


    Threshold Carbon 

  • Wheels

    Front Hub

    Alloy 12x100mm Thru-Axle 28h - Black 

    Front Hub Skewer

    Norco Tooled Thru-Axle 

    Rear Hub

    Alloy 12x142mm Thru-Axle 28h - Black 

    Rear Hub Skewer

    Norco Tooled Thru-Axle 


    Black Stainless w/Brass Nipple 


    WTB STp i19 - Black 

    Front Tire

    Schwalbe Rapid Rob 700x35c 

    Rear Tire

    Schwalbe Rapid Rob 700x35c 

  • Drivetrain

    Shifter Front

    Shimano Tiagra ST-4700 2spd w/Adjuster 

    Shifter Rear

    Shimano Tiagra ST-4700 10spd w/Adjuster 

    Front Derailleur

    Shimano Tiagra FD-4700 

    Rear Derailleur

    Shimano Tiagra RD-4700 


    Shimano Tiagra CS-4700 11-32T 10 speed 


    FSA Omega Cross 46/36T - Black 

    Bottom Bracket

    FSA MegaExo BB-4000 


    KMC X10 

  • Components

    Seat Post

    Norco 27.2mm - Black Stealth 

    Seat Post Clamp

    Alloy 31.8mm - Black 


    Norco Race - Black 


    Angular Sealed Cartridge Bearings - Tapered 

    Headset Spacer

    2x10mm / 1x5mm Alloy w/Norco logo 


    Norco SL Alloy - Black 


    Norco Flare - Black 


    Norco Super Griptacular w/Gel - Black 

    Front Brake

    TRP Spyre C Twin Piston Mech Disc - 160mm 

    Rear Brake

    TRP Spyre C Twin Piston Mech Disc - 160mm 

    Brake Levers

    Shimano Tiagra ST-4700 

Specifications subject to change without notice.
Bike Sizing Charts


Geometry Diagram
Wheel Size Compatibility700c700c700c700c700c700c700c
Front Travel (mm)-------
Rear Travel (mm)-------
STSeat Tube Length:455480505530555580605
HAHead Tube Angle:69.57070.571.257272.2572.5
ESASeat Tube Angle (effective):75.57574.57473.573.2573
TTHHorizontal Top Tube:500510522.5537.5555572.5590
HTHead Tube Length:95105117.5130145165185
FLFork length (axle to crown)395395395395395395395
BBRBottom Bracket Rise/Drop:-70-70-70-70-70-68.5-68.5
BBHBottom Bracket Height:275275275275275276.5276.5
WBWheel Base:1001100310071010101610321044
RCRear Centre:420420420422.5422.5425425
FCFront Centre591593597598603616628
SOHStand Over733749767785804826847
Crank Length165170170172.5172.5175175
Stem Length809090100100110110

Unsure about bike fit and sizing? View our sizing charts

Norco Threshold earns 4.5/5 stars from Bike Radar

January 02, 2018

BikeRadar recently reviewed the Norco Threshold C Force 1 and honoured it with a score of 4.5/5 stars. Calling the Threshold Carbon an “eye-opener”, test riders were pleasantly surprised by its incredible acceleration, balanced handling and added versatility. “An amazing ’cross racing rig with a touch of versatility.” “The Canadian brand has done its due […]

Read More

First Look: Canadian Cycling Magazine Eyes the Norco Threshold

December 06, 2017

Developed amid the rugged landscape and abundant precipitation of Canada’s Pacific Coast, the new Norco Threshold Carbon revels in the muddy mayhem of cyclocross. Its redesigned frame, updated geometry and array of features captured the attention of Canadian Cycling Magazine calling it a “cyclocross crushing package” in their most recent review. “While the Threshold is […]

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Embrace the Mud – Five Reasons the Norco Threshold Should be Your Next Cross Bike

November 15, 2017

We’re halfway through the cyclocross season but that doesn’t mean you can’t jump in and join in on the fun. In fact, the conditions are just getting more muddy and exciting as the season progresses! While you can race an amateur cyclocross race on almost any type of bike, the Norco Threshold is the best […]

Read More