BMXMass marketVerified spec
2021 Mongoose Supergoose
Launched at $550Lists today at $660 (2026-09)
Own a 2021 Mongoose Supergoose?
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
$307
$198 to $370
Like new
$292
$189 to $352
Excellent
$277
$179 to $333
Good
$230
$149 to $278
Fair
$169
$109 to $204
For parts
$92
$60 to $111
From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.
Overview
- Brand
- Mongoose
- Model family
- Classics
- Model year
- 2021
- Category
- BMX · freestyle
- Frame material
- steel
- Sizes
- 20"
- Wheel size
- 20
- Years sold
- 2021 to 2026
- Launch MSRP (US)
- $550
- Current list price
- $660 (as of 2026-09)
Drivetrain
- Speeds
- 1
- Electronic
- false
Build
- Fork
- Mongoose, 20", 4130 chromoly, 100 mm bolt-on
- Stem
- Mongoose, threaded top load, 48 mm
- Tires
- 20 in x 1.95 in front; 1.75 in rear, wire bead
- Brakes
- DiaCompe MX1000, caliper, aluminum
- Saddle
- Mongoose, steel rails
- Wheels
- Mongoose Pro Class, aluminum single wall, 36H, non tubeless
- Crankset
- 1-piece forged steel, 42T chainring
- Seatpost
- Mongoose, threaded top load, 48 mm
- Handlebar
- Mongoose, Hi-Ten steel, 27.5 in width, 8.75 in rise
- Suspension
- none
Mass market model record: appears in mongoose.com first-party captures 2021 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 2021-10, in the first year the model appears. Factory colors: Blue, Red.
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