MountainMass marketVerified spec
2020 Mongoose Argus ST 26
Launched at $420Lists today at $580 (2026-09)
Own a 2020 Mongoose Argus ST 26?
Track its value in your garage, or list it for sale locally in a few taps.
What a used one is worth
Open the value toolNew
$216
$136 to $263
Like new
$205
$130 to $250
Excellent
$194
$123 to $237
Good
$162
$102 to $197
Fair
$119
$75 to $145
For parts
$65
$41 to $79
From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.
Overview
- Brand
- Mongoose
- Model family
- Argus
- Model year
- 2020
- Category
- Mountain · fat
- Frame material
- steel
- Sizes
- 26"
- Wheel size
- 26 fat
- Tire volume
- fat
- Years sold
- 2020 to 2026
- Launch MSRP (US)
- $420
- Current list price
- $580 (as of 2026-09)
Drivetrain
- Speeds
- 7
- Groupset
- Shimano Tourney
- Electronic
- false
Build
- Fork
- Hi-Ten steel, 26", nutted
- Stem
- Aluminum, threadless, 80 mm, 7° rise, 31.8 mm clamp
- Tires
- 26 in x 4.0 in, wire bead
- Brakes
- Mechanical disc, aluminum, 160 mm
- Saddle
- Mongoose MTB, steel rails
- Wheels
- Aluminum, single wall, 36H
- Crankset
- Prowheel, aluminum, 36T
- Seatpost
- Steel, 350 mm, 28.6 mm
- Shifters
- 7-speed
- Handlebar
- Steel, 670 mm width, 15 mm rise, 31.8 mm clamp
- Suspension
- none
- Rear derailleur
- Shimano Tourney RD-TY300
Mass market model record: appears in mongoose.com first-party captures 2020 to 2026 and is listed on the live site in 2026-09. Components are from the live mongoose.com page. Launch price: mongoose.com capture 2020-09, in the first year the model appears. Factory colors: Copper.
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