2026 RB Bike RX 2026 Base S
Build
700C/29 in × 45 mm
Insights
Very aggressive stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of RB Bike RX 2026
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 538mm |
| Reach | 396mm |
| Stack to Reach Ratio | 1.36:1 |
| Seat Tube Length, C-T | 430mm |
| Top Tube Length, Effective/Horizontal Center | 540mm |
| Top Tube Slope | 13.6deg |
| Head Tube Angle | 69deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 80mm |
| Bottom Bracket Height | 276mm |
| Chainstay Length | 433mm |
| Chainstay Length Horizontal | 425.6mm |
| Front-Center | 629.6mm |
| Front-Center Horizontal | 624.5mm |
| Wheelbase | 1050mm |
| Fork Offset/Rake | 49.2mm |
| Trail | 84mm very high |
| Mechanical Trail | 78.4mm |
| Wheel Flop | 28.1mm |
| Standover Height | 736mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 103.6mm |
| 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 | 1762mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 155 cm to 166 cm |
Source:https://www.rb-bike.cz/rb-bike-katalog/xc-trail/rx/ram/