2026 Trek Bikes Wahoo Trail 20

Build

20 in (406) × 2.2 in

Insights

Very aggressive stack and reach vs trend of kids mtb bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
407mm
Reach
324mm
Stack to Reach Ratio
1.26:1
Seat Tube Length, Unknown
255mm
Top Tube Length, Effective/Horizontal HT Top
448mm
Top Tube Slope
22.3deg
Head Tube Angle
67deg
Seat Tube Angle
73deg
Head Tube Length
85mm
Bottom Bracket Drop
40mm
Bottom Bracket Height
218.9mm
Chainstay Length
372mm
Chainstay Length Horizontal
369.8mm
Front-Center
526.7mm
Front-Center Horizontal
525.2mm
Wheelbase
895mm
Fork Offset/Rake
41.8mm
Fork Length, Unknown
185mm
Trail
64.5mm
mid/​neutral
Mechanical Trail
59.4mm
Wheel Flop
23.2mm
Standover Height
476mm
Tire to Pedal Spindle Distance
With 115 mm cranks
152.8mm
Pedal Spindle to Ground Clearance
With 115 mm cranks
103.9mm

Trail Build

Wheel Size
20 inch (406 BSD, BMX/Kids) (406mm BSD)
Tire Width
2.2in
Tire Outer Diameter
517.8mm
Bike Length with Tires
1412.8mm
Crank Length
115mm
Handlebar Width
580mm
Stem Length
45mm
Stem Angle
6deg
Suspension Type
Rigid, suspension corrected
Bar Type
Flat Bar
Frame Material
Aluminum
Fork Material
Carbon/Composite
Brake Type
Disc

Published Sizing Recommendations

Height
3 ft 9 in
to
4 ft 4 in