2026 RB Bike RX 2026 Base L
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 | 578mm |
| Reach | 424mm |
| Stack to Reach Ratio | 1.36:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Center | 590mm |
| Top Tube Slope | 9.8deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 150mm |
| Bottom Bracket Drop | 80mm |
| Bottom Bracket Height | 276mm |
| Chainstay Length | 433mm |
| Chainstay Length Horizontal | 425.6mm |
| Front-Center | 668.3mm |
| Front-Center Horizontal | 663.5mm |
| Wheelbase | 1089mm |
| Fork Offset/Rake | 49.9mm |
| Trail | 79.8mm high |
| Mechanical Trail | 74.8mm |
| Wheel Flop | 26.2mm |
| Standover Height | 789mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 142.3mm |
| 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 | 1801mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 174 cm to 186 cm |
Source:https://www.rb-bike.cz/rb-bike-katalog/xc-trail/rx/ram/