2021 Polygon Bikes Xtrada 7
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Fork
- Aluminum
- Suspension
- 120mm fork travel, 25% sag
- Features
- Disc brake
Geometry
S 27.5" | M 27.5" | M 29" | L 29" | XL 29" | |
Stack | 593mm | 599mm | 629mm | 633mm | 637mm |
Reach | 410mm | 430mm | 430mm | 450mm | 470mm |
Stack to Reach Ratio | 1.45:1 | 1.39:1 | 1.46:1 | 1.41:1 | 1.36:1 |
Seat Tube Length, C-T | 385mm | 425mm | 425mm | 460mm | 500mm |
Top Tube Length, Effective/Horizontal Center | 569mm | 590mm | 598mm | 619mm | 640mm |
Top Tube Slope | 23.5deg | 19.2deg | 22deg | 18.3deg | 14.4deg |
Head Tube Angle | 67deg | 67deg | 67deg | 67deg | 67deg |
Seat Tube Angle | 75deg | 75deg | 75deg | 75deg | 75deg |
Head Tube Length | 95mm | 100mm | 95mm | 100mm | 105mm |
Bottom Bracket Drop | 45mm | 45mm | 65mm | 65mm | 65mm |
Bottom Bracket Height | 304.2mm | 304.2mm | 303.2mm | 303.2mm | 303.2mm |
Chainstay Length | 425mm | 425mm | 435mm | 435mm | 435mm |
Chainstay Length Horizontal | 422.6mm | 422.6mm | 430.1mm | 430.1mm | 430.1mm |
Front-Center | 684.9mm | 706.8mm | 719.8mm | 741.7mm | 763.7mm |
Front-Center Horizontal | 683.4mm | 705.4mm | 716.9mm | 738.9mm | 760.9mm |
Wheelbase | 1106mm | 1128mm | 1147mm | 1169mm | 1191mm |
Fork Offset/Rake | 37.5mm | 37mm | 43.7mm | 44mm | 44.3mm |
Trail | 107.4mm very high | 108mm very high | 108.8mm very high | 108.5mm very high | 108.2mm very high |
Mechanical Trail | 98.9mm | 99.4mm | 100.1mm | 99.9mm | 99.6mm |
Wheel Flop | 38.6mm | 38.8mm | 39.1mm | 39mm | 38.9mm |
Standover Height | 663mm | 697mm | 693mm | 715mm | 751mm |
Tire to Pedal Spindle | 165.7mm 170 mm cranks | 187.7mm 170 mm cranks | 181.7mm 170 mm cranks | 198.6mm 175 mm cranks | 220.5mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 134.2mm 170 mm cranks | 134.2mm 170 mm cranks | 133.2mm 170 mm cranks | 128.2mm 175 mm cranks | 128.2mm 175 mm cranks |
7 Build
S 27.5" | M 27.5" | M 29" | L 29" | XL 29" | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.25in | 2.25in | 2.25in | 2.25in | 2.25in |
Tire Outer Diameter | 698.3mm | 698.3mm | 736.3mm | 736.3mm | 736.3mm |
Bike Length with Tires | 1804.3mm | 1826.3mm | 1883.3mm | 1905.3mm | 1927.3mm |
Crank Length | 170mm | 170mm | 170mm | 175mm | 175mm |
Handlebar Width | 760mm | 760mm | 760mm | 760mm | 760mm |
Stem Length | 40mm | 40mm | 40mm | 40mm | 40mm |
Published Sizing Recommendations
Height | 155 cm to 168 cm | 168 cm to 177 cm | 168 cm to 177 cm | 177 cm to 185 cm | 185 cm to 195 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
Hardtail Cross-country MTBSource:https://www.bicyclesonline.com.au/2021-polygon-xtrada-7-1x12-mountain-bike