Norco Threshold A Tiagra

Name: Norco Threshold A Tiagra
Brand: Norco

2018 RoadCyclocross Manufacturer page

Last known price: $1,249

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 10 36–46t / 11–32t
Gear range: 372%
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

45.5cm
48cm
50.5cm
53cm
55.5cm
58cm
60.5cm

The manufacturer did not publish rider heights for these sizes.

Components

16 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Threshold X6 Double Butted SS Frame Not identified

Suspension

1 part

Fork

Threshold Carbon Not identified

Drivetrain

7 parts

Bottom bracket
- FSA
BB-4000
Cassette
- Shimano CS-4600 11–32t
CS-4600CS-4700
Chain
- KMC X10 10 speeds
Crankset
- FSA Omega 46/36t
Front derailleur
- Shimano Tiagra FD-4700 2 speeds
FD-4700
Rear derailleur
- Shimano Tiagra RD-4700 10 speeds
RD-4700
Shifters
- Shimano Tiagra ST-4700
ST-4700

Brakes

2 parts

Wheels and tires

4 parts

Front hub

Alloy 12x100mm Thru-Axle 28h - Black Not identified
Rear hub

Alloy 12x142mm Thru-Axle 28h - Black Not identified
Rims
- WTB
Tires
- Schwalbe Rapid Rob

Cockpit and contact points

6 parts

Grips
- Norco
Handlebar
- Norco
Headset

Angular Sealed Cartridge Bearings - Tapered Not identified
Saddle
- Norco
Seatpost
- Norco
Stem
- Norco

Sizes and geometry

7 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 53cm

Table

Reach 379mm

Stack 553mm

Wheelbase 1010mm

Head angle 71.3°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 7 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	368	370	374	379	386	395	404
Stackmm	512	523	537	553	570	588	608
Top tube lengthmm	500	510	522.5	537.5	555	572.5	590
Seat tube lengthmm	455	480	505	530	555	580	605
Head tube lengthmm	95	105	117.5	130	145	165	185
Head tube angle	69.5°	70°	70.5°	71.25°	72°	72.25°	72.5°
Seat tube angle	75.5°	75°	74.5°	74°	73.5°	73.25°	73°
Chainstay lengthmm	420	420	420	422.5	422.5	425	425
Wheelbasemm	1001	1003	1007	1010	1016	1032	1044
Front centermm	591	593	597	598	603	616	628
Bottom bracket dropmm	70	70	70	70	70	68.5	68.5
Bottom bracket heightmm	275	275	275	275	275	276.5	276.5
Standover heightmm	733	749	767	785	804	826	847
Fork rakemm	50	51	50	48	48	49	48
Trailmm	75	71	68	66	61	58	58
Stack/reach ratio	1.39	1.41	1.44	1.46	1.48	1.49	1.51
Suspension and parts
Crank lengthmm	165	170	170	172.5	172.5	175	175
Stem lengthmm	80	90	90	100	100	110	110

Not published by the manufacturer: Front travel, Rear travel, Handlebar width, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 36
Largest chainring: 46
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 32.6 in
Highest gear: 121.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 35c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

32.6 gear inches

This value is within the central range for this class.

Cohort: Road / Cyclocross Model year: 2018
Sample: 101 bicycles with this information
Coverage: 90.1% of the class

Highest gear

121.3 gear inches

This value is within the central range for this class.

Cohort: Road / Cyclocross Model year: 2018
Sample: 101 bicycles with this information
Coverage: 90.1% of the class

Shifting

Mechanical

5 of 112 bicycles with this information use electronic shifting.

Cohort: Road / Cyclocross Model year: 2018
Sample: 112 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 12.5 km/h
Highest gear: 46.4 km/h

Total gear range 372%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 32.6–121.3 gear inches
Class reference (p10–p90): 29.0–121.3 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Cyclocross Model year: 2018
Lowest gear: 101 bicycles with this information, 90.1% of the class
Highest gear: 101 bicycles with this information, 90.1% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2018 builds
Specification	This bicycle Norco Threshold A Tiagra	Norco Threshold A Apex 1	Norco Threshold A Single Speed	Norco Threshold C 105	Norco Threshold C Force 1	Norco Threshold C Red eTap
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Drivetrain
Front chainrings	2	1	1	2	1	1
Smallest chainring	36	40	40	36	42	40
Largest chainring	46	40	40	46	42	40
Rear sprockets	10	11	1	11	11	11
Smallest sprocket	11	11	16	11	11	11
Largest sprocket	32	36	16	28	32	32
Lowest gear	32.6 in	32.2 in	72.5 in	37.3 in	38.1 in	36.3 in
Highest gear	121.3 in	105.5 in	72.5 in	121.3 in	110.7 in	105.5 in
Brakes
Brake type	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Shifting	Mechanical	Mechanical	No shifting	Mechanical	Mechanical	Electronic
Other specifications
Tire width	35c	35c	35c	33c	33c	33c
Wheel material	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Carbon
Bottom bracket standard	Not informed	Not informed	Not informed	BB86/BB92	BB86/BB92	BB86/BB92