Vaast Y/1 - Mountain 20"

2020 YouthGeneral youth Manufacturer page

Last known price: $749

Prices shown first for United States
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

1 size 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 1 published size

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

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: Air
Tire width: 1.95″
Travel: Front: Additional specification: Not available: No
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.