2017 GT Bicycles Grade Alloy (105/Tiagra/Sora/Claris)
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Very upright stack and reachvs category |
Geometry
48 (XXXS) | 50 (XXS) | 51 (XS) | 53 (S) | 55 (M) | 56 (L) | 58 (XL) | 60 (XXL) | |
Stack | 517mm | 527mm | 534mm | 557mm | 578mm | 601mm | 627mm | 650mm |
Reach | 346mm | 354mm | 367mm | 370mm | 373mm | 381mm | 382mm | 389mm |
Stack to Reach Ratio | 1.49:1 | 1.49:1 | 1.46:1 | 1.51:1 | 1.55:1 | 1.58:1 | 1.64:1 | 1.67:1 |
Seat Tube Length, C-T | 435mm | 465mm | 495mm | 535mm | 550mm | 560mm | 605mm | 635mm |
Top Tube Length, Effective/Horizontal HT Top | 485mm | 500mm | 515mm | 535mm | 550mm | 565mm | 580mm | 600mm |
Top Tube Slope | 11.9deg | 9.4deg | 6.5deg | 4.8deg | 5.6deg | 6.9deg | 5.1deg | 4.5deg |
Head Tube Angle | 69deg | 69deg | 69deg | 70deg | 70.5deg | 71.5deg | 72deg | 72deg |
Seat Tube Angle | 75deg | 74.5deg | 74.5deg | 73.5deg | 73deg | 73deg | 72.5deg | 72deg |
Head Tube Length | 100mm | 110mm | 121mm | 142mm | 162mm | 182mm | 207mm | 231mm |
Bottom Bracket Drop | 75mm | 75mm | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 268mm | 268mm | 273mm | 273mm | 273mm | 273mm | 273mm | 273mm |
Chainstay Length | 415mm | 451mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 408.2mm | 444.7mm | 424.3mm | 424.3mm | 424.3mm | 424.3mm | 424.3mm | 424.3mm |
Front-Center | 575mm | 586mm | 597mm | 599mm | 605mm | 610mm | 615mm | 628mm |
Front-Center Horizontal | 569.8mm | 549.3mm | 592.7mm | 594.7mm | 600.7mm | 606.7mm | 610.7mm | 624.7mm |
Wheelbase | 978mm | 994mm | 1017mm | 1019mm | 1025mm | 1031mm | 1035mm | 1049mm |
Fork Offset/Rake | 50mm | 50mm | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Trail | 78.1mm high | 78.1mm high | 83.5mm very high | 77mm high | 73.7mm high | 67.3mm high | 64.1mm mid/​neutral | 64.1mm mid/​neutral |
Mechanical Trail | 72.9mm | 72.9mm | 77.9mm | 72.3mm | 69.5mm | 63.8mm | 61mm | 61mm |
Wheel Flop | 26.1mm | 26.1mm | 27.9mm | 24.7mm | 23.2mm | 20.3mm | 18.9mm | 18.9mm |
Standover Height | 702mm | 723mm | 735mm | 772mm | 786mm | 800mm | 829mm | 843mm |
Tire to Pedal Spindle | 62mm 170 mm cranks | 73mm 170 mm cranks | 84mm 170 mm cranks | 86mm 170 mm cranks | 92mm 170 mm cranks | 97mm 170 mm cranks | 102mm 170 mm cranks | 115mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 98mm 170 mm cranks | 98mm 170 mm cranks | 103mm 170 mm cranks | 103mm 170 mm cranks | 103mm 170 mm cranks | 103mm 170 mm cranks | 103mm 170 mm cranks | 103mm 170 mm cranks |
Alloy (105/Tiagra/Sora/Claris) Build
48 (XXXS) | 50 (XXS) | 51 (XS) | 53 (S) | 55 (M) | 56 (L) | 58 (XL) | 60 (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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm |
Tire Outer Diameter | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm |
Bike Length with Tires | 1664mm | 1680mm | 1703mm | 1705mm | 1711mm | 1717mm | 1721mm | 1735mm |
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
All-road/GravelSource:https://images.mtbiker.sk/eshop/big/33290-gt-grade-105-2017-cestny-bicykel-1.jpg