2020 Norco Bicycles Threshold A1 55.5
Build
700C/29 in × 35 mm
Insights
Average stack and reach vs trend of cyclocross bikes
Design deviates from other sizes of Norco Bicycles Threshold
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 570mm |
| Reach | 386mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, C-T | 555mm |
| Top Tube Length, Effective/Horizontal HT Top | 555mm |
| Top Tube Slope | 4deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 145mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 276mm |
| Chainstay Length | 422.5mm |
| Chainstay Length Horizontal | 416.7mm |
| Front-Center | 603.4mm |
| Front-Center Horizontal | 599.3mm |
| Wheelbase | 1016mm |
| Fork Offset/Rake | 48mm |
| Fork Length (On-Axis) | 395mm |
| Trail | 62mm mid/neutral |
| Mechanical Trail | 58.9mm |
| Wheel Flop | 18.2mm |
| Standover Height | 769mm |
| Tire to Pedal Spindle Distance With 172.5 mm cranks | 84.9mm |
| Pedal Spindle to Ground Clearance With 172.5 mm cranks | 103.5mm |
A1 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 35mm |
| Tire Outer Diameter | 692mm |
| Bike Length with Tires | 1708mm |
| Crank Length | 172.5mm |
| Stem Length | 100mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 7.5 in to 5 ft 11 in |
Source:https://www.norco.com/bikes/2020/road/cyclocross/threshold-aluminum/threshold-a1/