2026 Robert Frameworks RA1 GT Base S
Build
700C/29 in × 42 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Robert Frameworks RA1 GT
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 538mm |
| Reach | 380mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, Unknown | 490mm |
| Top Tube Length, Actual C-C | 535mm |
| Top Tube Slope | 7.4deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 283mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 404mm |
| Front-Center | 594.2mm |
| Front-Center Horizontal | 590mm |
| Wheelbase | 994mm |
| Fork Offset/Rake | 46.2mm |
| Fork Length (On-Axis) | 390mm |
| Trail | 72.7mm high |
| Mechanical Trail | 68.7mm |
| Wheel Flop | 22.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 113mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 42mm |
| Tire Outer Diameter | 706mm |
| Bike Length with Tires | 1700mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Titanium |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:robert-frameworks.com