Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant ATX
Value Guide market data · 2021 Giant ATX
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All ATX model years
2022$493 - $572Other model year2021UnavailableCurrently viewing
2020$446 - $518Other model year
2019$442 - $513Other model year
2018$428 - $497Other model year
2017$405 - $470Other model year
2016$428 - $497Other model year
2015$419 - $486Other model year
1999$3,720 - $4,320Other model year
1998$2,139 - $2,484Other model year
1997$1,163 - $1,350Other model year1996$755 - $877Other model year1994$651 - $756Other model year1993$744 - $864Other model year2021 ATX lineup
Overview
About this bike
2021 Giant ATX value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- SR Suntour M3030A, 75mm, coil spring, QR, preload adjust
- Frame
- ALUXX-Grade Aluminum
Drivetrain
- Groupset
- Shimano Tourney
- Bottom Bracket
- cartridge
- Cassette
- Shimano TZ500, 7-speed, 14 x 34
- Chain
- KMC Z7
- Crankset
- ProWheel Forged Alloy, 24/34/42
- Front Derailleur
- Shimano Tourney
- Rear Derailleur
- Shimano Tourney
- Shifters
- Shimano EF41
Brakes
- Brake Levers
- Shimano EF41
- Brakes
- linear pull, Alloy
Cockpit
- Handlebars
- Giant Sport, 25.4
- Saddle
- Giant Sport Custom
- Seatpost
- Giant Sport, 30.9
- Stem
- Giant Sport
Wheels & Tires
- Hubs
- Alloy, 32h, QR
- Rims
- Giant CH17, Alloy
- Spokes
- Stainless
- Tires
- Giant Quickcross, 26 x 2.2 or 27.5 x 2.2
- Wheel Size
- 27.5-inch / 26-inch
Pedals
- Pedals
- Platform
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.