2020 Allebike/MB31 Gravel GRX
- Category
- Progressive Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XS | S | M | L | XL | |
Stack | 543mm | 549mm | 567mm | 591mm | 611mm |
Reach | 373mm | 395mm | 405mm | 412mm | 431mm |
Stack to Reach Ratio | 1.46:1 | 1.39:1 | 1.4:1 | 1.43:1 | 1.42:1 |
Seat Tube Length, C-T | 462mm | 492mm | 522mm | 552mm | 582mm |
Top Tube Length, Effective/Horizontal HT Top | 534mm | 558mm | 573mm | 587mm | 612mm |
Top Tube Slope | 11.2deg | 8.2deg | 6.9deg | 6.2deg | 5.1deg |
Head Tube Angle | 70.5deg | 70.5deg | 70.5deg | 70.5deg | 70.5deg |
Seat Tube Angle | 73.5deg | 73.5deg | 73.5deg | 73.5deg | 73.5deg |
Head Tube Length | 124mm | 133mm | 143mm | 169mm | 190mm |
Bottom Bracket Drop | 75mm | 75mm | 75mm | 75mm | 75mm |
Bottom Bracket Height | 276mm | 276mm | 276mm | 276mm | 276mm |
Chainstay Length Horizontal | 430mm | 430mm | 430mm | 430mm | 430mm |
Front-Center | 601.7mm | 603.7mm | 624.5mm | 640.4mm | 666.2mm |
Front-Center Horizontal | 597mm | 599mm | 620mm | 636mm | 662mm |
Wheelbase | 1027mm | 1029mm | 1050mm | 1066mm | 1092mm |
Fork Offset/Rake | 54.9mm | 34.1mm | 38.4mm | 38.9mm | 38.8mm |
Fork Length (On-Axis) | 395mm | 395mm | 395mm | 395mm | 395mm |
Trail | 66mm high | 88.2mm very high | 83.5mm very high | 83mm very high | 83.1mm very high |
Mechanical Trail | 62.2mm | 83.1mm | 78.7mm | 78.3mm | 78.3mm |
Wheel Flop | 20.8mm | 27.7mm | 26.3mm | 26.1mm | 26.2mm |
Tire to Pedal Spindle | 78.2mm 172.5 mm cranks | 80.2mm 172.5 mm cranks | 101mm 172.5 mm cranks | 116.9mm 172.5 mm cranks | 142.7mm 172.5 mm cranks |
Pedal Spindle to Ground Clearance | 103.5mm 172.5 mm cranks | 103.5mm 172.5 mm cranks | 103.5mm 172.5 mm cranks | 103.5mm 172.5 mm cranks | 103.5mm 172.5 mm cranks |
GRX Build
XS | S | M | L | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 40mm | 40mm | 40mm | 40mm | 40mm |
Tire Width Max | 47mm | 47mm | 47mm | 47mm | 47mm |
Tire Outer Diameter | 702mm | 702mm | 702mm | 702mm | 702mm |
Bike Length with Tires | 1729mm | 1731mm | 1752mm | 1768mm | 1794mm |
Crank Length | 172.5mm | 172.5mm | 172.5mm | 172.5mm | 172.5mm |
Handlebar Width | 420mm | 420mm | 440mm | 440mm | 440mm |
Stem Length | 70mm | 70mm | 70mm | 70mm | 70mm |
Published Sizing Recommendations
Height | 148 cm to 166 cm | 158 cm to 172 cm | 168 cm to 178 cm | 174 cm to 186 cm | 182 cm to 196 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
Progressive GravelSource:https://www.allebike-sports.com/Allebike/MB31/MB31_Gravel/MB31_Gravel_GRX_Black?id=C50001