2026 Thompson Grammont SL2 Base M
Build
700C/29 in × 25 mm
Insights
Average stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 551mm |
| Reach | 385mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-T | 490mm |
| Top Tube Length, Effective/Horizontal Center | 548mm |
| Top Tube Slope | 8.8deg |
| Head Tube Angle | 72.5deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 263mm |
| Chainstay Length | 413mm |
| Chainstay Length Horizontal | 406.5mm |
| Front-Center | 589mm |
| Front-Center Horizontal | 584.5mm |
| Wheelbase | 991mm |
| Fork Offset/Rake | 47mm |
| Trail | 56.7mm mid/neutral |
| Mechanical Trail | 54mm |
| Wheel Flop | 16.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 83mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 93mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1663mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://thompson-bikebuilder.be/en/product/grammont-sl2/