2026 roko.bike Mountain Base 20"
Build
20 in (406) × 2.2 in
Insights
Design deviates from other sizes of roko.bike Mountain
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 421mm |
| Reach | 322mm |
| Stack to Reach Ratio | 1.31:1 |
| Seat Tube Length, Unknown | 250mm |
| Top Tube Length, Effective/Horizontal HT Top | 435mm |
| Top Tube Slope | 24.9deg |
| Head Tube Angle | 66deg |
| Seat Tube Angle | 75deg |
| Bottom Bracket Drop | 50mm |
| Bottom Bracket Height | 208.9mm |
| Chainstay Length | 325mm |
| Chainstay Length Horizontal | 321.1mm |
| Front-Center | 539.2mm |
| Front-Center Horizontal | 536.9mm |
| Wheelbase | 858mm |
| Fork Offset/Rake | 45.4mm |
| Trail | 65.6mm high |
| Mechanical Trail | 59.9mm |
| Wheel Flop | 24.4mm |
| Standover Height | 490mm |
| Tire to Pedal Spindle Distance With 114 mm cranks | 166.3mm |
| Pedal Spindle to Ground Clearance With 114 mm cranks | 94.9mm |
Base Build
| Wheel Size | 20 inch (406 BSD, BMX/Kids) (406mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 517.8mm |
| Bike Length with Tires | 1375.8mm |
| Crank Length | 114mm |
| Handlebar Width | 540mm |
| Stem Length | 35mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 105 cm to 125 cm |
Source:roko.bike