2021 Polygon Bikes Siskiu D5
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Suspension
- 120mm fork travel
- Features
- Disc brake
Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
S | M | L | |
Stack | 571.2mm | 580.4mm | 589.6mm |
Reach | 425mm | 445mm | 465mm |
Stack to Reach Ratio | 1.34:1 | 1.3:1 | 1.27:1 |
Seat Tube Length, C-T | 395mm | 435mm | 485mm |
Top Tube Length, Effective/Horizontal HT Top | 572.7mm | 595.1mm | 617.5mm |
Head Tube Angle | 67deg | 67deg | 67deg |
Effective Seat Tube Angle, ETT HT Top | 75.5deg | 75.5deg | 75.5deg |
Seat Tube Exit Angle | 70deg | 70deg | 70deg |
Head Tube Length | 102mm | 105mm | 122mm |
Bottom Bracket Drop | 27mm | 27mm | 27mm |
Bottom Bracket Height | 322.2mm | 322.2mm | 322.2mm |
Chainstay Length | 432mm | 432mm | 432mm |
Chainstay Length Horizontal | 431.2mm | 431.2mm | 431.2mm |
Front-Center | 702.4mm | 726.4mm | 750.3mm |
Front-Center Horizontal | 701.8mm | 725.8mm | 749.8mm |
Wheelbase | 1133mm | 1157mm | 1181mm |
Fork Offset/Rake | 42.2mm | 42.3mm | 42.4mm |
Trail | 102.4mm very high | 102.3mm very high | 102.2mm very high |
Mechanical Trail | 94.2mm | 94.1mm | 94.1mm |
Wheel Flop | 36.8mm | 36.8mm | 36.8mm |
Standover Height | 676mm | 696mm | 729mm |
Tire to Pedal Spindle | 183.2mm 170 mm cranks | 207.2mm 170 mm cranks | 231.2mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 152.2mm 170 mm cranks | 152.2mm 170 mm cranks | 152.2mm 170 mm cranks |
D5 Build
S | M | L | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in |
Tire Outer Diameter | 698.3mm | 698.3mm | 698.3mm |
Bike Length with Tires | 1831.3mm | 1855.3mm | 1879.3mm |
Published Sizing Recommendations
Height | 152.5 cm to 165 cm | 162.5 cm to 175 cm | 172.5 cm to 185 cm |
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 ScaleCategory Trend
Full-suspension Trail MTBSource:https://www.polygonbikes.com/product/mountain/siskiu-d5-3/