2020 Rockrider ST540 Base Medium
Build
650B/27.5 in × 2.1 in
Insights
Average stack and reach vs trend of hardtail trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 607mm |
| Reach | 399mm |
| Stack to Reach Ratio | 1.52:1 |
| Seat Tube Length, Unknown | 432mm |
| Top Tube Length, Effective/Horizontal Unknown | 585mm |
| Top Tube Slope | 20.3deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 43mm |
| Bottom Bracket Height | 302.3mm |
| Chainstay Length Horizontal | 430mm |
| Front-Center | 656.4mm |
| Front-Center Horizontal | 655mm |
| Wheelbase | 1085mm |
| Fork Offset/Rake | 42mm |
| Fork Length, Unknown | 496mm |
| Trail | 84.3mm very high |
| Mechanical Trail | 78.9mm |
| Wheel Flop | 27.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 141.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 132.3mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 690.7mm |
| Bike Length with Tires | 1775.7mm |
| Handlebar Width | 640mm |
| Stem Length | 70mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 165 cm to 174 cm |
Source:https://www.decathlon.it/p/mtb-st-540-27-5/_/R-p-301097?mc=8500757&c=NERO