2021 Polygon Bikes Siskiu D7 XL (29″)
Build
700C/29 in × 2.25 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Polygon Bikes Siskiu
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 625.2mm |
| Reach | 485mm |
| Stack to Reach Ratio | 1.29:1 |
| Seat Tube Length, Unknown | 522mm |
| Top Tube Length, Effective/Horizontal Center | 646.7mm |
| Top Tube Slope | 11.6deg |
| Head Tube Angle | 67.5deg |
| Seat Tube Angle | 68.7deg |
| Effective Seat Tube Angle, Unknown | 76deg |
| Head Tube Length | 122mm |
| Bottom Bracket Drop | 47mm |
| Bottom Bracket Height | 321.2mm |
| Chainstay Length | 436mm |
| Chainstay Length Horizontal | 433.5mm |
| Front-Center | 781mm |
| Front-Center Horizontal | 779.5mm |
| Wheelbase | 1213mm |
| Fork Offset/Rake | 50.9mm |
| Trail | 97.5mm very high |
| Mechanical Trail | 90mm |
| Wheel Flop | 34.5mm |
| Standover Height | 761mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 242.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 151.2mm |
D7 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.25in |
| Tire Outer Diameter | 736.3mm |
| Bike Length with Tires | 1949.3mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Steel |
| Brake Type | Disc |
Source:https://www.polygonbikes.com/product/mountain/siskiu-d7-5/