2019 Specialized Bicycles Tarmac Disc 54
Build
700C/29 in × 25 mm
Insights
Average stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 544mm |
| Reach | 384mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, C-T | 481mm |
| Top Tube Length, Effective/Horizontal Center | 540mm |
| Top Tube Slope | 9deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 143mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.6mm |
| Front-Center | 579mm |
| Front-Center Horizontal | 574.4mm |
| Wheelbase | 978mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 363mm |
| Trail | 56.7mm mid/neutral |
| Mechanical Trail | 54.2mm |
| Wheel Flop | 15.9mm |
| Standover Height | 775mm |
| Tire to Pedal Spindle Distance With 172 mm cranks | 71mm |
| Pedal Spindle to Ground Clearance With 172 mm cranks | 92mm |
Disc Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1650mm |
| Crank Length | 172mm |
| Handlebar Width | 420mm |
| Stem Length | 100mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/tarmac?color=240919-134480