Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant STP 20
Value Guide market data · 2021 Giant STP 20
12-month trend
10%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
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$1,070 - $1,242▼ 4% vs. 2021
2023$1,070 - $1,242▼ 4% vs. 2021
2022$911 - $1,058▼ 18% vs. 2021
2021$1,116 - $1,296Currently viewing
2015$1,488 - $1,728▲ 33% vs. 2021
2014$1,488 - $1,728▲ 33% vs. 20212013$1,488 - $1,728▲ 33% vs. 2021
2012$1,488 - $1,728▲ 33% vs. 2021
2011$1,302 - $1,512▲ 17% vs. 2021
2010$1,511 - $1,755▲ 35% vs. 2021
2009$1,511 - $1,755▲ 35% vs. 2021
2008$953 - $1,107▼ 15% vs. 2021
2007$698 - $810▼ 37% vs. 2021
2006$698 - $810▼ 37% vs. 2021
2005$930 - $1,080▼ 17% vs. 20212021 STP 20 lineup
Overview
About this bike
2021 Giant STP 20 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Alloy, rigid
- Frame
- ALUXX-Grade Aluminum
Drivetrain
- Groupset
- 2021 Giant STP 20
- Crankset
- Alloy forged, 30t
- Bottom Bracket
- Cartridge
- Chain
- KMC Z7
- Rear Derailleur
- Shimano Altus
- Shifters
- Shimano REVOSHIFT
- Cassette/Freewheel
- Shimano CS-HG200, 12x32
Brakes
- Brake Levers
- Alloy, junior
- Brakes
- Mechanical disc
Cockpit
- Seatpost
- Alloy, 27.2x250
- Saddle
- Giant Jr. Sport
- Stem
- Forged alloy, 0-degree
- Handlebars
- Giant Sport, alloy, 31.8
Wheels & Tires
- Hubs
- Giant Disc, 28h, QR, alloy, disc
- Rims
- Giant 20", alloy, 28mm inner width
- Tires
- Kenda Karma, 20x2.6
- Spokes
- Stainless, 14g
Pedals
- Pedals
- Platform
Accessories
- Color
- Concrete
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.