2026 Thompson Grammont SL2 Base S
Build
700C/29 in × 25 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Thompson Grammont SL2
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 532mm |
| Reach | 377mm |
| Stack to Reach Ratio | 1.41:1 |
| Seat Tube Length, C-T | 470mm |
| Top Tube Length, Effective/Horizontal Center | 530mm |
| Top Tube Slope | 9deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 261mm |
| Chainstay Length | 413mm |
| Chainstay Length Horizontal | 406.1mm |
| Front-Center | 580mm |
| Front-Center Horizontal | 574.9mm |
| Wheelbase | 981mm |
| Fork Offset/Rake | 47mm |
| Trail | 59.8mm mid/neutral |
| Mechanical Trail | 56.8mm |
| Wheel Flop | 17.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 74mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 91mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1653mm |
| 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/