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2025 Mongoose

Argus ST 20

A 20″ steel frame general youth bike with mid-range components and mechanical disc brakes.
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Manufacturer Price

$439
FrameSteel
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
Drivetrain1 × 7
GroupsetTourney
BrakesMechanical Disc
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Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

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Specs
Build
Frame

Hi-Ten steel, 1 1/8 in headtube

Fork

Hi-Ten steel, 20", nutted

Bottom Bracket

Square taper, 100 mm shell

Headset

Threadless, EC34

Stem

Aluminum, threadless, 80 mm, 7° rise, 31.8 mm clamp

Handlebar

Steel, 620 mm width, 15 mm rise, 31.8 mm clamp

Saddle

Mongoose MTB, steel rails

Seatpost

Steel, 250 mm, 28.6 mm

TypeRigid

Pedals

Mongoose, nylon

Grips

Mongoose, Kraton

Groupset
Rear Derailleur

Shimano Tourney RD-TY300

Crank

Prowheel, aluminum, 36T

Shifters

7-speed

Brakes

Mechanical disc, aluminum, 160 mm

TypeMechanical Disc

Wheels
Rims

Aluminum, single wall, 36H

Spokes

14G, steel, black

Front Hub

Steel, ball bearing, 9 mm x 135 mm, 36H, 6-bolt

Rear Hub

Steel, ball bearing, 10 mm x 190 mm QR, 36H, 6-bolt

Tires

20 in x 4.0 in, wire bead

Rider Notes
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First added April 20

Last updated September 20

Not listed for 251 days