Trek Wahoo 20

Name: Trek Wahoo 20
Brand: Trek

2023 YouthGeneral youth Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €449 Last known price
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 8 28t / 11–34t
Gear range: 309%
Weight: 8.73 kg 19.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

20" 114–132

Components

9 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Alpha Silver Aluminium, 20" Not identified

Suspension

1 part

Fork

Wahoo 20" alloy with ThruSkew Not identified

Drivetrain

6 parts

Bottom bracket

Sealed cartridge Not identified
Cassette
- Shimano CS-HG31 8 speeds
CS-HG31
Chain
- KMC Z8.3 8 speeds
Crankset

Alloy, 28 T steel chain ring w/guard, 140 mm length Not identified
Rear derailleur
- Shimano Altus RD-M310
RD-M310
Shifters
- Shimano Altus SL-M315
SL-M315

Brakes

2 parts

Brake levers

Kids' alloy brake lever, black Not identified
Brakes

Alloy linear-pull Not identified

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Formula FM-32
FM-32
Rims

Alloy 20", 28 h Not identified
Spokes

14 g stainless steel, black Not identified
Tires

20x1.95" Not identified

Cockpit and contact points

6 parts

Grips

Size: 20" wheel, Kids', Kraton; Size: 20" wheel, Kids' Kraton Not identified
Handlebar
- Bontrager
Pedals

Kids' 9/16", platform Not identified
Saddle

Kids' 20" size, padded Not identified
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 20"

Table

Reach 306mm

Stack 427mm

Wheelbase 864mm

Head angle 70.0°

Seat angle 72.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 20″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	306
Stackmm	427
Top tube lengthmm	445
Seat tube lengthmm	255
Head tube lengthmm	135
Head tube angle	70°
Seat tube angle	72°
Chainstay lengthmm	372
Wheelbasemm	864
Front centermm	493
Bottom bracket dropmm	15
Bottom bracket heightmm	240
Standover heightmm	518
Fork rakemm	34
Trailmm	48
Stack/reach ratio	1.40

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum
Bicycle weight: 8.73 kg

19.2 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 28
Largest chainring: 28
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 16.5 in
Highest gear: 50.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire clearance: Maximum tire width: 2.2″
Tire width: 1.95″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.3 km/h
Highest gear: 19.5 km/h

Total gear range 309%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 16.5–50.9 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2023 builds
Specification	This bicycle Trek Wahoo 20	Trek Wahoo 24	Trek Wahoo 26
Frame
Bicycle weight	8.73 kg	9.5 kg	10.21 kg
Drivetrain
Lowest gear	16.5 in	19.8 in	21.4 in
Highest gear	50.9 in	61.1 in	66.2 in
Other specifications
Wheel size	20″	24″	26″
Bottom bracket standard	Not informed	Not informed	BSA

Changes since 2022
Specification	2022 Trek Wahoo 20	This bicycle Trek Wahoo 20
Frame
Bicycle weight	8.89 kg	8.73 kg
Drivetrain
Smallest chainring	32	28
Largest chainring	32	28
Lowest gear	18.8 in	16.5 in
Highest gear	58.2 in	50.9 in
Other specifications
Tire clearance	Not informed	Maximum tire width: 2.2″