Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2021 Trek Dual Sport 1
Value Guide market data · 2021 Trek Dual Sport 1
12-month trend
9%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Trek Dual Sport 1
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Dual Sport model years
2021 Dual Sport 1 lineup
Overview
About this bike
2021 Trek Dual Sport 1 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- SR Suntour NEX, coil spring, preload, 100mm QR, 63mm travel
- Frame
- Alpha Gold Aluminum, DuoTrap S compatible, internal cable routing, rack & fender mounts, post mount disc, kickstand mount, 135mm QR
Drivetrain
- Groupset
- 2021 Trek Dual Sport 1
- Crankset
- Forged alloy, 170mm length
- Bottom Bracket
- VP BC73, 73mm, threaded cartridge
- Chain
- KMC Z7
- Front Derailleur
- Shimano Tourney TY510, 34.9mm clamp, top swing, dual pull
- Rear Derailleur
- Shimano Altus M310
- Cassette/Rear Cogs
- SunRace MFM300 freewheel, 14-34T, 7 speed
- Chainrings
- 48/38/28T, chainguard
- Shifters
- Shimano Altus EF500, 7 speed
Brakes
- Brakes
- Tektro MD-M280 mechanical disc, 160mm rotors
Cockpit
- Saddle
- Bontrager Sport
- Headset
- 1-1/8'' threadless, sealed cartridge bearings
- Stem
- Bontrager alloy, 25.4mm clamp
- Handlebars
- Bontrager Riser, steel, 25.4mm
- Seat Post
- Bontrager alloy, 27.2mm, 12mm offset, 330mm length
- Tape/Grips
- Bontrager Satellite
Wheels & Tires
- Hubs
- Front: Formula DC-20, alloy, 6-bolt, 100mm QR<br>Rear: Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135mm QR
- Tires
- Bontrager GR1 Comp, wire bead, 60 tpi, 700x40c
- Spokes
- 14g, stainless steel, black
Pedals
- Pedals
- Wellgo nylon platform
Accessories
- Rims/Wheels
- Bontrager Connection, alloy, double-wall, 32-hole, schrader valve
- Color
- Trek Black / Viper Red
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.