2019 Norco Bicycles Threshold Aluminum Single Speed

Category
Cyclocross
Design
Drop Bar, Rigid, non-suspension corrected
Frame
Aluminum
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

48
50.5
53
55.5
58
60.5
Stack
523mm
537mm
553mm
570mm
588mm
608mm
Reach
370mm
374mm
379mm
386mm
395mm
404mm
Stack to Reach Ratio
1.41:1
1.44:1
1.46:1
1.48:1
1.49:1
1.5:1
Seat Tube Length, C-T
480mm
505mm
530mm
555mm
580mm
605mm
Top Tube Length, Effective/Horizontal HT Top
510mm
522.5mm
537.5mm
555mm
572.5mm
590mm
Head Tube Angle
70deg
70.5deg
71.25deg
72deg
72.25deg
72.5deg
Effective Seat Tube Angle, Unknown
75deg
74.5deg
74deg
73.5deg
73.25deg
73deg
Head Tube Length
105mm
117.5mm
130mm
145mm
165mm
185mm
Bottom Bracket Drop
70mm
70mm
70mm
70mm
68.5mm
68.5mm
Bottom Bracket Height
274mm
274mm
274mm
274mm
275.5mm
275.5mm
Chainstay Length
427mm
427mm
429.5mm
429.5mm
432mm
432mm
Chainstay Length Horizontal
421.2mm
421.2mm
423.8mm
423.8mm
426.5mm
426.5mm
Front-Center
593mm
597mm
598mm
603mm
616mm
628mm
Front-Center Horizontal
588.8mm
592.8mm
593.2mm
599.2mm
612.5mm
624.5mm
Wheelbase
1010mm
1014mm
1017mm
1023mm
1039mm
1051mm
Fork Offset/Rake
50.7mm
50.3mm
47.6mm
48.3mm
48.7mm
48mm
Fork Length (On-Axis)
395mm
395mm
395mm
395mm
395mm
395mm
Trail
71.3mm
high
68.4mm
high
66.5mm
high
61mm
mid/​neutral
58.9mm
mid/​neutral
58.1mm
mid/​neutral
Mechanical Trail
67mm
64.5mm
63mm
58mm
56.1mm
55.4mm
Wheel Flop
22.9mm
21.5mm
20.2mm
17.9mm
17.1mm
16.7mm
Standover Height
749mm
767mm
785mm
804mm
826mm
847mm
Tire to Pedal Spindle
79mm
170 mm cranks
83mm
170 mm cranks
81.5mm
172.5 mm cranks
86.5mm
172.5 mm cranks
97mm
175 mm cranks
109mm
175 mm cranks
Pedal Spindle to Ground Clearance
104mm
170 mm cranks
104mm
170 mm cranks
101.5mm
172.5 mm cranks
101.5mm
172.5 mm cranks
100.5mm
175 mm cranks
100.5mm
175 mm cranks

Aluminum Single Speed Build

48
50.5
53
55.5
58
60.5
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
33mm
33mm
33mm
33mm
33mm
33mm
Tire Outer Diameter
688mm
688mm
688mm
688mm
688mm
688mm
Bike Length with Tires
1698mm
1702mm
1705mm
1711mm
1727mm
1739mm
Crank Length
170mm
170mm
172.5mm
172.5mm
175mm
175mm
Stem Length
90mm
90mm
100mm
100mm
110mm
110mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Cyclocross
Source:https://www.norco.com/bikes/2019/dirt-dropbar/cyclocross/threshold-aluminum/threshold-aluminum-single-speed/