2026 Boardman Bikes ADV 8.9 S
Build
700C/29 in × 40 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 559mm |
| Reach | 376mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, C-T | 515mm |
| Top Tube Length, Effective/Horizontal HT Top | 535mm |
| Top Tube Slope | 7deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 278mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 423.8mm |
| Front-Center | 600.7mm |
| Front-Center Horizontal | 596.2mm |
| Wheelbase | 1020mm |
| Fork Offset/Rake | 50mm |
| Fork Length (Axle-To-Crown) | 400mm |
| Trail | 68mm high |
| Mechanical Trail | 64.3mm |
| Wheel Flop | 20.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 79.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 108mm |
8.9 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1722mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.boardmanbikes.com/cm_en/products/2403-adv-8.9.html