2026 Thompson Grammont SL2 Base
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XS | S | M | L | XL | XXL | |
Stack | 513mm | 532mm | 551mm | 572mm | 593mm | 617mm |
Reach | 373mm | 377mm | 385mm | 393mm | 398mm | 406mm |
Stack to Reach Ratio | 1.38:1 | 1.41:1 | 1.43:1 | 1.46:1 | 1.49:1 | 1.52:1 |
Seat Tube Length, C-T | 450mm | 470mm | 490mm | 510mm | 540mm | 560mm |
Top Tube Length, Effective/Horizontal Center | 515mm | 530mm | 548mm | 562mm | 579mm | 600mm |
Top Tube Slope | 9.1deg | 9deg | 8.8deg | 8.8deg | 7.9deg | 8.2deg |
Head Tube Angle | 72deg | 72deg | 72.5deg | 73deg | 73.5deg | 73.5deg |
Seat Tube Angle | 74.5deg | 74deg | 73.5deg | 73.5deg | 73deg | 72.5deg |
Head Tube Length | 100mm | 120mm | 140mm | 160mm | 180mm | 205mm |
Bottom Bracket Drop | 75mm | 75mm | 73mm | 73mm | 73mm | 73mm |
Bottom Bracket Height | 261mm | 261mm | 263mm | 263mm | 263mm | 263mm |
Chainstay Length | 413mm | 413mm | 413mm | 413mm | 413mm | 413mm |
Chainstay Length Horizontal | 406.1mm | 406.1mm | 406.5mm | 406.5mm | 406.5mm | 406.5mm |
Front-Center | 569mm | 580mm | 589mm | 599mm | 605mm | 620mm |
Front-Center Horizontal | 564.9mm | 574.9mm | 584.5mm | 594.5mm | 600.5mm | 615.5mm |
Wheelbase | 971mm | 981mm | 991mm | 1001mm | 1007mm | 1022mm |
Fork Offset/Rake | 47mm | 47mm | 47mm | 47mm | 47mm | 47mm |
Trail | 59.8mm mid/neutral | 59.8mm mid/neutral | 56.7mm mid/neutral | 53.6mm mid/neutral | 50.5mm mid/neutral | 50.5mm mid/neutral |
Mechanical Trail | 56.8mm | 56.8mm | 54mm | 51.2mm | 48.4mm | 48.4mm |
Wheel Flop | 17.6mm | 17.6mm | 16.3mm | 15mm | 13.8mm | 13.8mm |
Tire to Pedal Spindle | 63mm 170 mm cranks | 74mm 170 mm cranks | 83mm 170 mm cranks | 93mm 170 mm cranks | 99mm 170 mm cranks | 114mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 91mm 170 mm cranks | 91mm 170 mm cranks | 93mm 170 mm cranks | 93mm 170 mm cranks | 93mm 170 mm cranks | 93mm 170 mm cranks |
Base Build
XS | S | M | L | XL | XXL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 25mm | 25mm | 25mm | 25mm | 25mm | 25mm |
Tire Outer Diameter | 672mm | 672mm | 672mm | 672mm | 672mm | 672mm |
Bike Length with Tires | 1643mm | 1653mm | 1663mm | 1673mm | 1679mm | 1694mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Performance RoadSource:https://thompson-bikebuilder.be/en/product/grammont-sl2/