Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant ARX 20
Value Guide market data · 2021 Giant ARX 20
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All ARX model years
2021 ARX 20 lineup
Overview
About this bike
2021 Giant ARX 20 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- Aluminum / ALUXX-Grade AluminumColors:Lemon Yellow / Black; Pure Red / Black; Orange/ Black; Blue / Black; Neon Green / Black; Purple
- Suspension
- Rigid
- Fork
- Aluminum / alloy
Drivetrain
- Groupset
- 2021 Giant Arx 16
- Drivetrain
- Single-speed
- Bottom Bracket
- sealed cartridge
- Crank
- alloy, forged, three-piece, 28t
- Cassette
- 18t
- Chain
- KMC C410
Brakes
- Brakes
- Rim / alloy, linear pullType:Rim
- Brake Levers
- alloy, junior MTB
Cockpit
- Stem
- steel, quill
- Handlebar
- Giant Youth, 50mm rise, 480mm width
- Saddle
- Giant Grow Technology
- Seatpost
- alloy, 27.2Type:Rigid
Wheels & Tires
- Wheels
- 16″ Aluminum / 16″
- Top Tube Length
- 380
- Seat Tube Length
- —
- Seat Tube Angle
- 72.0
- Head Tube Length
- 110
- Head Tube Angle
- 71.0
- Rims
- Giant Kids 16", alloy
- Spokes
- stainless, 14g
- Front Hub
- alloy, F/R 20/20h
- Rear Hub
- alloy, F/R 20/20h
- Tires
- Innova IA-2084, 16X1.5
Pedals
- Pedals
- platform
Accessories
- Stack
- 338
- Reach
- 270
- Stack/Reach Ratio
- 1.25
- BB Drop
- —
- Chainstay Length
- 316
- Wheelbase
- 740
- Standover Height
- 385
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.