2026 Thompson Grammont SL2 Base XS
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 | 513mm |
| Reach | 373mm |
| Stack to Reach Ratio | 1.38:1 |
| Seat Tube Length, C-T | 450mm |
| Top Tube Length, Effective/Horizontal Center | 515mm |
| Top Tube Slope | 9.1deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 74.5deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 261mm |
| Chainstay Length | 413mm |
| Chainstay Length Horizontal | 406.1mm |
| Front-Center | 569mm |
| Front-Center Horizontal | 564.9mm |
| Wheelbase | 971mm |
| 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 | 63mm |
| 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 | 1643mm |
| 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/