2020 GT Bicycles Grade Al Expert 2020
- Category
- Endurance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
44 | 48 | 51 | 55 | 58 | 61 | |
Stack | 524mm | 546mm | 568mm | 590mm | 612mm | 634mm |
Reach | 370mm | 378mm | 385mm | 394mm | 400mm | 408mm |
Stack to Reach Ratio | 1.42:1 | 1.44:1 | 1.48:1 | 1.5:1 | 1.53:1 | 1.55:1 |
Seat Tube Length, C-C | 420mm | 457mm | 494mm | 531mm | 568mm | 605mm |
Top Tube Length, Actual C-C | 531mm | 545mm | 559mm | 574mm | 587mm | 602mm |
Head Tube Angle | 69deg | 70.5deg | 70.5deg | 72.3deg | 72.3deg | 72.3deg |
Seat Tube Angle | 73deg | 73deg | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 102mm | 119mm | 145mm | 160mm | 187mm | 210mm |
Bottom Bracket Drop | 75mm | 75mm | 73mm | 73mm | 70mm | 70mm |
Bottom Bracket Height | 273mm | 273mm | 275mm | 275mm | 278mm | 278mm |
Chainstay Length | 445mm | 445mm | 445mm | 445mm | 445mm | 445mm |
Chainstay Length Horizontal | 438.6mm | 438.6mm | 439mm | 439mm | 439.5mm | 439.5mm |
Front-Center | 606mm | 608mm | 623mm | 621mm | 634mm | 650mm |
Front-Center Horizontal | 601.4mm | 603.4mm | 618mm | 616mm | 630.5mm | 645.5mm |
Wheelbase | 1040mm | 1042mm | 1057mm | 1055mm | 1070mm | 1085mm |
Fork Offset/Rake | 55mm | 55mm | 55mm | 55mm | 55mm | 55mm |
Trail | 74.7mm high | 64.9mm mid/​neutral | 64.9mm mid/​neutral | 53.3mm mid/​neutral | 53.3mm mid/​neutral | 53.3mm mid/​neutral |
Mechanical Trail | 69.7mm | 61.2mm | 61.2mm | 50.8mm | 50.8mm | 50.8mm |
Wheel Flop | 25mm | 20.4mm | 20.4mm | 15.5mm | 15.5mm | 15.5mm |
Standover Height | 700mm | 731mm | 760mm | 791mm | 824mm | 851mm |
Tire to Pedal Spindle | 88mm 170 mm cranks | 90mm 170 mm cranks | 105mm 170 mm cranks | 103mm 170 mm cranks | 116mm 170 mm cranks | 132mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 103mm 170 mm cranks | 103mm 170 mm cranks | 105mm 170 mm cranks | 105mm 170 mm cranks | 108mm 170 mm cranks | 108mm 170 mm cranks |
Al Expert 2020 Build
44 | 48 | 51 | 55 | 58 | 61 | |
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 | 700C/29 in 622 mm BSD |
Tire Width | 37mm | 37mm | 37mm | 37mm | 37mm | 37mm |
Tire Outer Diameter | 696mm | 696mm | 696mm | 696mm | 696mm | 696mm |
Bike Length with Tires | 1736mm | 1738mm | 1753mm | 1751mm | 1766mm | 1781mm |
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
Endurance RoadSource:https://www.cyclery.de/Media/Default/Uploaded/G20_geos_grade.JPG