Bike-on-Bike
Default Config
Insights
Average stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Giant Bicycles Defy Advanced
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Specialized Bicycles Tarmac
Geometry
Stack | 577mm | 564mm -13mm |
Reach | 384mm | 395mm +11mm |
Stack to Reach Ratio | 1.5:1 | 1.43:1 |
Seat Tube Length, C-T | 515mm | 501mm -14mm |
Top Tube Length, Effective/Horizontal Center | — | 565mm |
Top Tube Length, Actual C-C | 560mm | — |
Top Tube Slope | 9deg | 8.9deg -0.1deg |
Head Tube Angle | 72.5deg | 73.5deg +1deg |
Seat Tube Angle | 73deg | 73.25deg +0.25deg |
Head Tube Length | 175mm | 160mm -15mm |
Bottom Bracket Drop | 70mm | 69mm -1mm |
Bottom Bracket Height | 274.5mm | 266mm -8.5mm |
Chainstay Length | 420mm | 405mm -15mm |
Chainstay Length Horizontal | 414.1mm | 399.1mm -15mm |
Front-Center | 600mm | 591mm -9mm |
Front-Center Horizontal | 595.9mm | 586.9mm -9mm |
Wheelbase | 1010mm | 986mm -24mm |
Fork Offset/Rake | 50mm | 43mm -7mm |
Trail | 56.2mm mid/neutral | 54.4mm -1.8mm mid/neutral |
Mechanical Trail | 53.6mm | 52.2mm -1.4mm |
Wheel Flop | 16.1mm | 14.8mm -1.3mm |
Standover Height | 796mm | 795mm -1mm |
Tire to Pedal Spindle | 85.5mm 170 mm cranks | 83.5mm -2mm 172.5 mm cranks |
Pedal Spindle to Ground Clearance | 104.5mm 170 mm cranks | 93.5mm -11mm 172.5 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 33.5mm | 24mm -9.5mm |
Tire Outer Diameter | 689mm | 670mm -19mm |
Bike Length with Tires | 1699mm | 1656mm -43mm |
Crank Length | 170mm | 172.5mm +2.5mm |
Handlebar Width | 430mm | 420mm -10mm |
Stem Length | 100mm | 100mm +0mm |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Carbon/Composite | Carbon/Composite |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
| Actions | ||
| Source | https://www.giant-bicycles.com/us/defy-advanced-0-2026 | https://www.specialized.com/us/en/tarmac-pro-disc-race/p/93249?color=172435-93249 |
| Brand | ||
| Bike | ||
| Size | ||
| Category |