Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2021 Giant Roam E+ GTS
Value Guide market data · 2021 Giant Roam E+ GTS
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All Roam model years
2021 Roam E+ GTS lineup
Overview
About this bike
2021 Giant Roam E+ GTS value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- SR Suntour NEX E25 63mm travel
- Frame
- ALUXX SL aluminum, Overdrive 1-1/2 – 1-1/8" head tube, integrated KS18 kickstand mount
Drivetrain
- Groupset
- 2021 Giant Roam E+ GTS
- Crankset
- Forged Alloy minimal Q-factor, 42T
- Chain
- KMC e.9 Sport, e-bike optimized
- Rear Derailleur
- Shimano Alivio M3100, 9-Speed
- Cassette/Rear Cogs
- Shimano CS-HG200, 11-36T, 9-Speed
- Shifters
- Shimano SL-M2000
Brakes
- Brake Levers
- Tektro HD-M275
- Brakes
- Tektro HD-M275, hydraulic disc, 180/160mm
Cockpit
- Saddle
- Giant Sport Comfort
- Stem
- Giant Sport,15-Degree, 25.4
- Handlebars
- Giant Sport, 25.4
- Seat Post
- Giant 30.9mm, 2-bolt Micro Adjustable, Forged Aluminium
Wheels & Tires
- Hubs
- Giant eTracker
- Tires
- Giant Crosscut Gravel 2, 700x45c (622x45), Tubeless Ready W/O Reflex (GU: w/reflex)
- Axles
- Front: 100x9mm QR<br>Rear: 135mm QR
- Spokes
- Stainless steel
Pedals
- Pedals
- Aluminum Platform
E-System
- Display
- Giant RideControl Plus ANT+ (optional)
- Battery
- Giant EnergyPak 400, 36V Lithium-Ion
- Charger
- Giant EnergyPak 4A fast charger
- Motor
- Giant SyncDrive Core
Accessories
- Rims/Wheels
- Giant GX03V, 700c Aluminum
- Max Assisted Speed
- 20mph
- Color
- Black
Weight & Sizing
- Size
- Small / Medium / Large / X-Large
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.