2026 Decathlon RockRider EXPL 100 L
Build
700C/29 in × 2.2 in
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 632mm |
| Reach | 435mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 480mm |
| Top Tube Length, Effective/Horizontal Center | 620mm |
| Top Tube Slope | 16.7deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 60mm |
| Bottom Bracket Height | 306.9mm |
| Chainstay Length | 455mm |
| Chainstay Length Horizontal | 451mm |
| Front-Center | 696.6mm |
| Front-Center Horizontal | 694mm |
| Wheelbase | 1145mm |
| Fork Offset/Rake | 46mm |
| Trail | 88.1mm very high |
| Mechanical Trail | 82.5mm |
| Wheel Flop | 28.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 159.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 136.9mm |
EXPL 100 Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 733.8mm |
| Bike Length with Tires | 1878.8mm |
| Crank Length | 170mm |
| Handlebar Width | 700mm |
| Stem Length | 60mm |
| Stem Angle | 15deg |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Source:gemini.google.com