Vaast Y/1 20"

2023 YouthGeneral youth Manufacturer page

Last known price: $399

Prices shown first for United States
Fork travel: 63 mm
Wheels: 20″
Drivetrain: 1 × 9 32t / 11–36t
Gear range: 327%
Frame: Magnesium
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

14 of 17 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

Youth MTB 20" AE81 ALLITE Super Mag - w/ replaceable hanger Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

6 parts

Bottom bracket
- VP
Cassette
- SunRace
Chain
- KMC X9 9 speeds
Crankset

Forged Alloy - 32T Not identified
Rear derailleur
- Shimano Altus
Shifters
- Shimano Altus

Brakes

2 parts

Brakes
- ProMax
Disc rotors
- ProMax

Wheels and tires

3 parts

Cockpit and contact points

4 parts

Sizes and geometry

2 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 20"

Table

Reach 310mm

Stack 457mm

Wheelbase 895mm

Head angle 68.0°

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 Reach Stack

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	310	357
Stackmm	457	522
Top tube lengthmm	459	527
Seat tube lengthmm	265	310
Head tube lengthmm	140	150
Head tube angle	68°	68°
Seat tube angle	72°	72°
Chainstay lengthmm	350	410
Wheelbasemm	895	1005
Front centermm	546	598
Bottom bracket dropmm	20	35
Standover heightmm	567	616
Fork rakemm	55	40
Stack/reach ratio	1.47	1.46
Suspension and parts
Crank lengthmm	152	152
Handlebar widthmm	560	560
Stem lengthmm	50	50

Not published by the manufacturer: Bottom bracket height, Trail, Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Magnesium

Suspension

Suspension configuration: Hardtail
Front travel: 63 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 17.8 in
Highest gear: 58.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 1.95″
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 22.3 km/h

Total gear range 327%

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: 17.8–58.2 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 Vaast Y/1 20"	Vaast Y/1 24"
Suspension
Front travel	63 mm	Not informed
Drivetrain
Rear sprockets	9	10
Largest sprocket	36	42
Lowest gear	17.8 in	18.3 in
Highest gear	58.2 in	69.8 in
Other specifications
Fork spring	Coil	Air
Wheel size	20″	24″