Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2021 Trek Dual Sport 4
Value Guide market data · 2021 Trek Dual Sport 4
12-month trend
12%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2021 Trek Dual Sport 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Dual Sport model years
2021 Dual Sport 4 lineup
Overview
About this bike
2021 Trek Dual Sport 4 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- SR Suntour NRX RL, remote lockout, preload, 63mm travel
- Frame
- Alpha Gold Aluminum, DuoTrap S compatible, internal cable routing, rack & fender mounts, post mount disc, kickstand mount
Drivetrain
- Groupset
- 2021 Trek Dual Sport 4
- Crankset
- ProWheel forged alloy, 2-piece / ProWheel forged alloy
- Chain
- KMC X10, 10 speed / KMC X11, 11 speed
- Front Derailleur
- Shimano Deore M610, 34.9mm clamp, top swing, dual pull
- Rear Derailleur
- Shimano Deore M6000, mid cage, 42T max cog / Shimano Deore M5100, long cage, Shadow Plus
- Cassette/Rear Cogs
- SunRace, 11-40T, 10 speed
- Chainrings
- 42/28T / 42T
- Shifters
- Shimano Deore M6000 / Shimano Deore M5100, 11 speed
- Cassette
- Shimano Deore M5100, 11-51, 11 speed
Brakes
- Brakes
- Shimano MT200 hydraulic disc w/Shimano RT54, 160mm Center Lock rotors
Cockpit
- Saddle
- Bontrager Evoke
- Handlebar
- Bontrager Comp Lowriser, alloy, 31.8mm, 15mm rise<br>S, M: 600mm width<br>L, XL: 660mm width
- Headset
- 1-1/8'' threadless, sealed cartridge bearings
- Stem
- Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
- Handlebars
- Bontrager Comp Lowriser, alloy, 31.8mm, 15mm rise
- Seat Post
- Bontrager Comp, 6061 alloy, 27.2mm, 8mm offset, 330mm length
- Tape/Grips
- Bontrager XR Endurance Elite, lock-on, ergonomic
Wheels & Tires
- Hubs
- Shimano M3050, Center Lock
- Tires
- Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700c x 40
- Axles
- Front: 100mm QR<br>Rear: 135mm QR
- Spokes
- 14g, stainless steel, black / 14g, stainless steel
Pedals
- Pedals
- Wellgo Black with reflectors
Accessories
- Rims/Wheels
- Bontrager Affinity Disc, Tubeless Ready, 32-hole, 21mm width, presta valve
- Color
- Trek 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.