2021 GT Bicycles GTR Sport Base
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XS | S | M | L | XL | XXL | |
Stack | 525mm | 536mm | 555mm | 572mm | 593mm | 612mm |
Reach | 376mm | 379mm | 379mm | 389mm | 394mm | 398mm |
Stack to Reach Ratio | 1.4:1 | 1.41:1 | 1.46:1 | 1.47:1 | 1.51:1 | 1.54:1 |
Seat Tube Length, C-T | 470mm | 490mm | 510mm | 530mm | 550mm | 570mm |
Top Tube Slope | 8.2deg | 7.2deg | 7.2deg | 6.8deg | 6.9deg | 6.9deg |
Head Tube Angle | 72deg | 72.5deg | 72.5deg | 72.5deg | 73deg | 73deg |
Seat Tube Angle | 74deg | 74deg | 73.5deg | 73.5deg | 73deg | 72.5deg |
Head Tube Length | 111mm | 121mm | 141mm | 161mm | 181mm | 201mm |
Bottom Bracket Drop | 72mm | 72mm | 72mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 267mm | 267mm | 267mm | 269mm | 269mm | 269mm |
Chainstay Length | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm |
Chainstay Length Horizontal | 413.8mm | 413.8mm | 413.8mm | 414.1mm | 414.1mm | 414.1mm |
Front-Center | 575mm | 577mm | 584mm | 599mm | 605mm | 615mm |
Front-Center Horizontal | 571.2mm | 573.2mm | 579.2mm | 594.9mm | 600.9mm | 610.9mm |
Wheelbase | 985mm | 987mm | 993mm | 1009mm | 1015mm | 1025mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Trail | 62.8mm mid/neutral | 59.7mm mid/neutral | 59.7mm mid/neutral | 59.7mm mid/neutral | 56.6mm mid/neutral | 56.6mm mid/neutral |
Mechanical Trail | 59.8mm | 56.9mm | 56.9mm | 56.9mm | 54.1mm | 54.1mm |
Wheel Flop | 18.5mm | 17.1mm | 17.1mm | 17.1mm | 15.8mm | 15.8mm |
Standover Height | 710mm | 728mm | 748mm | 769mm | 788mm | 808mm |
Tire to Pedal Spindle | 66mm 170 mm cranks | 68mm 170 mm cranks | 75mm 170 mm cranks | 90mm 170 mm cranks | 96mm 170 mm cranks | 106mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 97mm 170 mm cranks | 97mm 170 mm cranks | 97mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks |
Base Build
XS | S | M | L | XL | XXL | |
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 | 28mm | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1663mm | 1665mm | 1671mm | 1687mm | 1693mm | 1703mm |
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
Performance RoadSource:https://www.gtbicycles.com/rus_en/gtr-sport-2548