2026 RB Bike RX 2026 Base M
Build
700C/29 in × 45 mm
Insights
Very aggressive stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 561mm |
| Reach | 404mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, C-T | 470mm |
| Top Tube Length, Effective/Horizontal Center | 565mm |
| Top Tube Slope | 11.6deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 135mm |
| Bottom Bracket Drop | 80mm |
| Bottom Bracket Height | 276mm |
| Chainstay Length | 433mm |
| Chainstay Length Horizontal | 425.6mm |
| Front-Center | 647.4mm |
| Front-Center Horizontal | 642.5mm |
| Wheelbase | 1068mm |
| Fork Offset/Rake | 50.2mm |
| Trail | 82.8mm very high |
| Mechanical Trail | 77.3mm |
| Wheel Flop | 27.7mm |
| Standover Height | 766mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 121.4mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 106mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 45mm |
| Tire Outer Diameter | 712mm |
| Bike Length with Tires | 1780mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 164 cm to 176 cm |
Source:https://www.rb-bike.cz/rb-bike-katalog/xc-trail/rx/ram/