Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant STP 20
Previous used estimate
$223 - $229
Actual value depends on condition, size, and local demand.
Value Guide market data · 2021 Giant STP 20
12-month projected trend
10%
Direction and magnitude, not judgment
vs. category average
3%
Drops faster than category avg
Price over time - 2021 Giant STP 20
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All STP model years
2024$690 - $710▲ 210% vs. 2021
2023$612 - $630▲ 175% vs. 2021
2022$409 - $420▲ 83% vs. 20212021$223 - $229Currently viewing
2015$364 - $374▲ 63% vs. 2021
2014$354 - $364▲ 59% vs. 20212013$354 - $364▲ 59% vs. 2021
2012$340 - $349▲ 52% vs. 2021
2011$291 - $300▲ 31% vs. 2021
2010$336 - $346▲ 51% vs. 2021
2009$336 - $346▲ 51% vs. 2021
2008$237 - $244▲ 6% vs. 2021
2007$180 - $185▼ 19% vs. 2021
2006$158 - $163▼ 29% vs. 2021
2005$190 - $196▼ 15% vs. 2021Overview
About this bike
Bold Moves From the driveway to the bike park, the new STP 20 helps young riders build their skills and make the transition from wobbly laps around the block to fun trails and off-road terrain. With a lightweight aluminum frame, smaller 20-inch wheels, and geometry that's designed specifically for young riders, the new STP can be a first step toward adventures in the dirt. Versatile enough to ride on streets, parks or trails, it offers kids a confident, controlled ride to help them build their skills. The 60mm suspension fork soaks up bumps, and powerful disc brakes help them negotiate steep descents. It also features kid-friendly components such as shorter reach brake levers and a comfortable saddle. Key performance factors: - Dirt or street: Lightweight, strong and durable aluminum frameset is designed to go from street riding to bike parks or trails. - Kid-friendly design: Frame geometry is designed specifically for young riders with 20-inch wheels, a low saddle height, and taller front end for a stable ride quality. - Maximum control: Powerful disc brakes put maximum control in the rider's hands.
Specifications
- Subtype
- Dirt Jump
- Category
- Mountain
- Component Fork
- Alloy, rigid
- Component Hubs
- Giant Disc, 28h, QR, alloy, disc
- Component Rims
- Giant 20", alloy, 28mm inner width
- Component Size
- 20-inch
- Component Stem
- Forged alloy, 0-degree
- Product Family
- STP
- Component Chain
- KMC Z7
- Component Color
- Concrete
- Component Frame
- ALUXX-Grade Aluminum
- Component Tires
- Kenda Karma, 20x2.6
- Component Brakes
- Mechanical disc
- Component Pedals
- Platform
- Component Saddle
- Giant Jr. Sport
- Component Crankset
- Alloy forged, 30t
- Component Seatpost
- Alloy, 27.2x250
- Component Shifters
- Shimano REVOSHIFT
- Component Handlebars
- Giant Sport, alloy, 31.8
- Component Brake Levers
- Alloy, junior
- Component Bottom Bracket
- Cartridge
- Component Rear Derailleur
- Shimano Altus
- Component Cassette Freewheel
- Shimano CS-HG200, 12x32
- Hubs
- Giant Disc, 28h, QR, alloy, disc
- Rims
- Giant 20", alloy, 28mm inner width
- Tires
- Kenda Karma, 20x2.6
- Crankset
- Alloy forged, 30t
- Pedals
- Platform
- Bottom Bracket
- Cartridge
- Chain
- KMC Z7
- Seatpost
- Alloy, 27.2x250
- Saddle
- Giant Jr. Sport
- Rear Derailleur
- Shimano Altus
- Stem
- Forged alloy, 0-degree
- Brake Levers
- Alloy, junior
- Brakes
- Mechanical disc
- Fork
- Alloy, rigid
- Frame
- ALUXX-Grade Aluminum
- Handlebars
- Giant Sport, alloy, 31.8
- Shifters
- Shimano REVOSHIFT
- Color
- Concrete
- Size
- 20-inch
- Cassette/Freewheel
- Shimano CS-HG200, 12x32
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.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.