Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
GT
2019 GT Siren Coaster 20-inch
Previous used estimate
$88 - $91
Actual value depends on condition, size, and local demand.
Value Guide market data · 2019 GT Siren Coaster 20-inch
12-month projected trend
3%
Direction and magnitude, not judgment
vs. category average
4%
Holds value better than category avg
Price over time - 2019 GT Siren Coaster 20-inch
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Siren model years
Compare Siren Coaster 20-inch models
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Overview
About this bike
The Siren Coaster 20-inch is a bike designed to make your little one feel like a big kid. A durable alloy frame and steel fork, paired with a rear coaster brake and rear V-Brake, make for years of enjoyment. Front and rear fenders and a kickstand add to the fun!
Specifications
- Subtype
- 20-inch
- Category
- Kids
- Component Fork
- GT Hi-Ten Steel, 1" Threaded Steerer
- Component Rims
- Alloy, 28h
- Component Stem
- 2-Bolt Alloy Top, Steel Quill
- Product Family
- Siren
- Component Chain
- KMC Z410A
- Component Color
- Gloss Lilac w/Ink Blue, Magenta & Sky Blue
- Component Frame
- 20" GT LegitFit Design, Alloy
- Component Brakes
- V-Brake, Coaster rear
- Component Pedals
- Jr. BMX design, resin
- Component Saddle
- GT 1-piece
- Component Cassette
- 16T Coaster
- Component Crankset
- Forged One-Piece Type, 127mm
- Component Handlebar
- Steel Riser bar, 176mm rise, 580mm
- Component Seat Post
- Alloy
- Component Chainrings
- 32T
- Component Front Tire
- GT 20 x 1.95"
- Component Tape Grips
- 120mm closed end
- Rims
- Alloy, 28h
- Crankset
- Forged One-Piece Type, 127mm
- Pedals
- Jr. BMX design, resin
- Chain
- KMC Z410A
- Saddle
- GT 1-piece
- Handlebar
- Steel Riser bar, 176mm rise, 580mm
- Stem
- 2-Bolt Alloy Top, Steel Quill
- Brakes
- V-Brake, Coaster rear
- Cassette
- 16T Coaster
- Chainrings
- 32T
- Fork
- GT Hi-Ten Steel, 1" Threaded Steerer
- Frame
- 20" GT LegitFit Design, Alloy
- Seat Post
- Alloy
- Tape/Grips
- 120mm closed end
- Color
- Gloss Lilac w/Ink Blue, Magenta & Sky Blue
- Front Tire
- GT 20 x 1.95"
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.