2026 Specialized Allez Base 58
Build
700mm BSD × 30 mm
Insights
Somewhat upright stack and reach vs trend of endurance road bikes
Design deviates from other sizes of Specialized Allez
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 610mm |
| Reach | 386mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, Unknown | 350mm |
| Top Tube Length, Effective/Horizontal Center | 569mm |
| Top Tube Slope | 29.5deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73.25deg |
| Head Tube Length | 195mm |
| Bottom Bracket Drop | 74.5mm |
| Bottom Bracket Height | 305.5mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 418.4mm |
| Front-Center | 603mm |
| Front-Center Horizontal | 598.6mm |
| Wheelbase | 1017mm |
| Fork Offset/Rake | 47mm |
| Fork Length, Unknown | 378mm |
| Trail | 67mm high |
| Mechanical Trail | 64.1mm |
| Wheel Flop | 18.7mm |
| Standover Height | 821mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 48mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 130.5mm |
Base Build
| Wheel Size | 700mm BSD |
| Tire Width | 30mm |
| Tire Outer Diameter | 760mm |
| Bike Length with Tires | 1777mm |
| Crank Length | 175mm |
| Handlebar Width | 440mm |
| Stem Length | 110mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.specialized.com/gb/en/allez-comp-shimano-105/p/4221810?color=5444471-4221810