2026 roko.bike Trail Base
- Category
- Kids MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Aluminum
- Suspension
- 80mm fork travel
- Features
- Disc brake
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 | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
20" | 24" | 26 | |
Stack | 421mm | 491mm | 560mm |
Reach | 322mm | 354mm | 385mm |
Stack to Reach Ratio | 1.31:1 | 1.39:1 | 1.45:1 |
Seat Tube Length, C-T | 250mm | 310mm | 360mm |
Top Tube Length, Effective/Horizontal HT Top | 435mm | 485mm | 535mm |
Top Tube Slope | 24.9deg | 23.8deg | 23.9deg |
Head Tube Angle | 66deg | 66deg | 66deg |
Seat Tube Angle | 75deg | 75deg | 75deg |
Bottom Bracket Drop | 50mm | 65mm | 75mm |
Bottom Bracket Height | 208.9mm | 244.4mm | 260.4mm |
Chainstay Length | 325mm | 380mm | 415mm |
Chainstay Length Horizontal | 321.1mm | 374.4mm | 408.2mm |
Front-Center | 539.2mm | 596.2mm | 654.2mm |
Front-Center Horizontal | 536.9mm | 592.6mm | 649.8mm |
Wheelbase | 858mm | 967mm | 1058mm |
Fork Offset/Rake | 45.4mm | 44.7mm | 44.7mm |
Trail | 65.6mm high | 88.8mm very high | 100.4mm very high |
Mechanical Trail | 59.9mm | 81.1mm | 91.7mm |
Wheel Flop | 24.4mm | 33mm | 37.3mm |
Standover Height | 500mm | 600mm | 670mm |
Tire to Pedal Spindle | 166.3mm 114 mm cranks | 159.8mm 127 mm cranks | 178.8mm 140 mm cranks |
Pedal Spindle to Ground Clearance | 94.9mm 114 mm cranks | 117.4mm 127 mm cranks | 120.4mm 140 mm cranks |
Base Build
20" | 24" | 26 | |
Wheel Size | 20 in (406) 406 mm BSD | 24 in 507 mm BSD | 26 in 559 mm BSD |
Tire Width | 2.2in | 2.2in | 2.2in |
Tire Outer Diameter | 517.8mm | 618.8mm | 670.8mm |
Bike Length with Tires | 1375.8mm | 1585.8mm | 1728.8mm |
Crank Length | 114mm | 127mm | 140mm |
Handlebar Width | 540mm | 580mm | 620mm |
Stem Length | 35mm | 35mm | 35mm |
Published Sizing Recommendations
Height | 108 cm to 128 cm | 115 cm to 135 cm | 130 cm to 155 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
Kids MTBSource:roko.bike