2025 Rockrider E-ST 100
- Category
- Hardtail Cross-country MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 100mm fork travel
- Features
- Disc brake, E-bike
Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat aggressive stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
S | M | L | XL | |
Stack | 577mm | 596mm | 605mm | 623mm |
Reach | 379mm | 403mm | 430mm | 445mm |
Stack to Reach Ratio | 1.52:1 | 1.48:1 | 1.41:1 | 1.4:1 |
Seat Tube Length, Unknown | 429mm | 436mm | 443mm | 493mm |
Top Tube Length, Effective/Horizontal Unknown | 555mm | 585mm | 615mm | 635mm |
Head Tube Angle | 68deg | 68deg | 68deg | 68deg |
Effective Seat Tube Angle, Unknown | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 110mm | 130mm | 140mm | 160mm |
Bottom Bracket Drop | 15mm | 15mm | 15mm | 15mm |
Bottom Bracket Height | 332.9mm | 332.9mm | 332.9mm | 332.9mm |
Chainstay Length Horizontal | 432mm | 432mm | 432mm | 432mm |
Front-Center | 651.2mm | 683.2mm | 713.2mm | 735.2mm |
Front-Center Horizontal | 651mm | 683mm | 713mm | 735mm |
Wheelbase | 1083mm | 1115mm | 1145mm | 1167mm |
Fork Offset/Rake | 42mm | 42mm | 42mm | 42mm |
Fork Length, Unknown | 510mm | 510mm | 510mm | 510mm |
Trail | 95.3mm very high | 95.3mm very high | 95.3mm very high | 95.3mm very high |
Mechanical Trail | 88.3mm | 88.3mm | 88.3mm | 88.3mm |
Wheel Flop | 33.1mm | 33.1mm | 33.1mm | 33.1mm |
Tire to Pedal Spindle | 133.3mm 170 mm cranks | 165.3mm 170 mm cranks | 195.3mm 170 mm cranks | 217.3mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 162.9mm 170 mm cranks | 162.9mm 170 mm cranks | 162.9mm 170 mm cranks | 162.9mm 170 mm cranks |
100 Build
S | M | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.2in | 2.2in | 2.2in | 2.2in |
Tire Width Max | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Outer Diameter | 695.8mm | 695.8mm | 695.8mm | 695.8mm |
Bike Length with Tires | 1778.8mm | 1810.8mm | 1840.8mm | 1862.8mm |
Handlebar Width | 720mm | 720mm | 720mm | 720mm |
Stem Length | 70mm | 80mm | 80mm | 90mm |
Published Sizing Recommendations
Height | 150 cm to 164 cm | 165 cm to 174 cm | 175 cm to 184 cm | 185 cm to 200 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Cross-country MTBSource:https://www.decathlon.ee/p/337499-53290-275-hardtail-tuupi-elektriline-maastikujalgratas-e-st-100-valge-punane.html