2021 Polygon Bikes Siskiu N9 Extra Large (29")
Build
700C/29 in × 2.35 in
Insights
Average stack and reach vs trend of full-suspension all-mountain/enduro mtb bikes
Design deviates from other sizes of Polygon Bikes Siskiu
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Bar type unusual for category
This: Moto/Klunker/Riser Bar
Category: Flat Bar
vs full-suspension all-mountain/enduro mtb bikesCategory: Flat Bar
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 638.8mm |
| Reach | 485mm |
| Stack to Reach Ratio | 1.32:1 |
| Seat Tube Length, C-T | 520mm |
| Top Tube Length, Effective/Horizontal Center | 656.2mm |
| Top Tube Slope | 12.4deg |
| Head Tube Angle | 65.5deg |
| Seat Tube Angle | 75deg |
| Effective Seat Tube Angle, ETT HT Top | 69.5deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 33mm |
| Bottom Bracket Height | 337.7mm |
| Chainstay Length | 439.4mm |
| Chainstay Length Horizontal | 438.2mm |
| Front-Center | 817.8mm |
| Front-Center Horizontal | 817.1mm |
| Wheelbase | 1255.3mm |
| Fork Offset/Rake | 51mm |
| Trail | 112.9mm very high |
| Mechanical Trail | 102.7mm |
| Wheel Flop | 42.6mm |
| Standover Height | 773.7mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 272.1mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 162.7mm |
N9 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.35in |
| Tire Outer Diameter | 741.4mm |
| Bike Length with Tires | 1996.7mm |
| Crank Length | 175mm |
| Handlebar Width | 780mm |
| Stem Length | 35mm |
| Suspension Type | Full suspension |
| Bar Type | Moto/Klunker/Riser Bar |
| Fork Travel | 160mm |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 6 ft 1 in to 6 ft 5 in |
Source:https://www.bikesonline.com/2021-polygon-siskiu-n9-dual-suspension-mountain-bike