2017 Threshold A Tiagra

$1649 CAD Now $1618 (?)

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  • Threshold A Tiagra
    Threshold A Tiagra

Overview

The Threshold Aluminum offers race-ready performance in an affordable package. A premium double-butted aluminum frame shares the same race-proven geometry and compliance technology as the Threshold Carbon, but adds additional rack and fender mounts for increased versatility. Fast, fun and ready for muddy mayhem, the Threshold Aluminum is the perfect bike for any rider looking to get down and dirty at their first cross race.

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.

Technology

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

Seat stays are slender and feature a less pronounced bow shape that still delivers effective road vibration dampening. Chain stays are broad and extremely st... [read more]iff 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

Norco’s Power Chassis Design is the ultra-efficient power transfer system that anchors all of our performance road bikes and gives them their responsivenes... [read more]s and explosive acceleration. The Power Chassis is a complete pedaling platform designed to convert energy from a rider’s whole body into forward momentum.


Power Chassis is also featured on:

Gizmo
Gizmo

The fully proprietary GIZMO system features two-piece GIZMO plugs that create a tight seal, blocking water and debris from entering the frame. GIZMO plugs pi... [read more]nch and hold cables firmly in place, preventing any rattling at entry and exit points. They also enable the rider to pull cables taught so that they can be prevented from rattling around inside the frame.


Gizmo is also featured on:

Road Disc Brakes

Road Disc Brakes

ARC Race

ARC Race

Power Chassis

Power Chassis

Gizmo

Gizmo

Specifications

Detailed SpecsCompare

Frameset

Frame

Threshold X6 Double Butted Aluminum - Disc 

Fork

Threshold Mid-Mod Full Carbon - TA Disc 

Components

Seat Post

Norco 27.2mm - Black Stealth 

Seat Post Clamp

Alloy 31.8mm - Black 

Shifter Casing

N/A 

Saddle

Norco Cross Race - Black 

Headset

Angular Sealed Cartridge Bearings - Tapered 

Headset Spacer

N/A 

Top Cap

N/A 

Stem

Norco - Black Stealth 

Handlebar

Norco Compact - Black Stealth 

Grips

Norco Ultra-Comfort - Black 

Front Brake

Tektro Spyre C Twin Piston Mech Disc - 160mm 

Chain Tensioner

N/A 

Rear Brake

Tektro Spyre C Twin Piston Mech Disc - 160mm 

Brake Levers

Shimano Tiagra ST-4700 

Brake Cable Casing

N/A 

Brake Rotors

N/A 

Wheels

Front Hub

Alloy 15x100mm Thru-Axle Disc 28h - Black 

Front Hub Skewer

DT Swiss RWS ECO Thru-Axle 15mm 

Rear Hub

Alloy 10x135mm QR Disc 28h - Black 

Rear Hub Skewer

Alloy QR 

Spokes/Nipples

Butted Stainless - Black w/Black Alloy Nipples 

Rims

Alloy Aero 28mm - Black 

Tires

Schwalbe Rapid Rob 700x35c 

Drivetrain

Shifter Front

Shimano Tiagra ST-4700 10spd w/Adjuster 

Shifter Rear

Shimano Tiagra ST-4700 10spd w/Adjuster 

Front Derailleur

Shimano Tiagra FD-4700 

Rear Derailleur

Shimano Tiagra RD-4700 

Cassette

Shimano Tiagra CS-4700 11-32T 10 speed 

Crankset

FSA Omega Cross 46/36T - Black 

Bottom Bracket

FSA MegaExo BB-4000 

Chain

Shimano Tiagra CN-4601 10speed 

Specifications subject to change without notice.

Geometry

Geometry Diagram
 
 
45 48 50.5 53 55.5 58 60
 
 
45 48 50.5 53 55.5 58 60
Wheel_Size
Wheel Size
700c 700c 700c 700c 700c 700c 700c
 
Front Travel (mm)
- - - - - - -
 
Rear Travel (mm)
- - - - - - -
ST
Seat tube length (centre to top)
455 480 505 530 555 580 605
HA
Head tube angle
70 70 70.5 71.5 72.25 72.5 72.75
ESA
Effective seat tube angle
75.5 75 74.5 74 73.75 73.5 73.25
N/A N/A N/A N/A N/A N/A N/A
TTH
Theoretical (horz) top tube length
495 507.5 520 537.5 555 572.5 590
HT
Head tube length
95 105 115 130 145 165 185
FL
Fork length (axle to crown)
405 405 405 405 405 405 405
BBR
Bottom bracket rise/drop
-67.5 -67.5 -67.5 -67.5 -67.5 -67.5 -67.5
BBH
Bottom bracket height
284.5 284.5 284.5 284.5 284.5 284.5 284.5
WB
Wheelbase
993 1001 1005 1009 1017 1029 1042
RC
Rear Centre (chainstay length)
425 425 425 425 425 425 425
FC
Front Centre
577 586 590 593 601 613 626
 
Reach
360 365 369 377 386 395 404
 
Stack
523 532 544 562 579 599 619
SOH
Stand over height
742 754 770 789 809 829 850
 
Crank Length
165 170 170 170 175 175 175
 
Bar Width
400 400 420 420 440 440 440
 
Stem Length
80 90 90 100 100 110 110