Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2018 Trek Marlin 7
Previous used estimate
$225 - $231
Actual value depends on condition, size, and local demand.
Value Guide market data · 2018 Trek Marlin 7
12-month projected trend
6%
Direction and magnitude, not judgment
vs. category average
1%
Holds value better than category avg
Price over time - 2018 Trek Marlin 7
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Marlin model years
Overview
About this bike
Mountain adventure awaits Marlin takes its cue from light, fast XC bikes. The right wheel size for each frame size, performance pedigree, and unbeatable ride feel make Marlin the perfect trail rider. When you're ready for longer days on the bike, bigger challenges on the trail, and all the fun of the full mountain biking experience, you're ready for Marlin. Key features - Ride the fastest wheel that fits with Smart Wheel Size - Ride-tuned aluminum frame is XC light, mountain tough - Extended size range gives you a better fit for a better ride - Backed by Trek's limited lifetime warranty
Specifications
- Subtype
- Cross Country
- Category
- Mountain
- Component Fork
- RockShox 30, coil spring, preload, TurnKey lockout, G2 Geometry w/51mm offset on 29ers, 100mm travel (13.5: 80mm travel)
- Component Hubs
- Front: Formula DC20 alloy; Rear: Formula DC22 alloy
- Component Size
- 13.5-inch, 15.5-inch, 17.5-inch, 18.5-inch, 19.5-inch, 21.5-inch, 23-inch
- Component Stem
- Bontrager alloy, 31.8mm, 7mm rise, Blendr compatible
- Product Family
- Marlin
- Component Chain
- KMC X9
- Component Color
- Matte Trek Black, Roarange, Waterloo Blue
- Component Frame
- Alpha Silver Aluminum w/semi-integrated head tube, rack & fender mounts, G2 Geometry on 29ers
- Component Brakes
- Tektro M285 hydraulic disc
- Component Pedals
- Wellgo nylon platform
- Component Saddle
- Bontrager Evoke 1.5
- Component Headset
- 1-1/8" threadless, semi-integrated, semi-cartridge bearings
- Component Crankset
- Shimano M351
- Component Seatpost
- Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset
- Component Shifters
- Shimano Altus M370, 9 speed
- Component Handlebar
- Bontrager alloy, 31.8mm, 15mm rise
- Component Chainrings
- 44/32/22
- Component Front Tire
- Bontrager XR2, 29x2.20" front, 29x2.00" rear (13.5 & 15.5: 27.5x2.20")
- Component Tape Grips
- Bontrager Race
- Component Wheel Size
- 27.5-inch, 29-inch
- Component Bottom Bracket
- Sealed cartridge
- Component Rear Derailleur
- Shimano Acera M3000, Shadow
- Component Front Derailleur
- Shimano Altus
- Hubs
- Front: Formula DC20 alloy; Rear: Formula DC22 alloy
- Crankset
- Shimano M351
- Pedals
- Wellgo nylon platform
- Bottom Bracket
- Sealed cartridge
- Chain
- KMC X9
- Seatpost
- Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset
- Saddle
- Bontrager Evoke 1.5
- Handlebar
- Bontrager alloy, 31.8mm, 15mm rise
- Headset
- 1-1/8" threadless, semi-integrated, semi-cartridge bearings
- Front Derailleur
- Shimano Altus
- Rear Derailleur
- Shimano Acera M3000, Shadow
- Stem
- Bontrager alloy, 31.8mm, 7mm rise, Blendr compatible
- Brakes
- Tektro M285 hydraulic disc
- Chainrings
- 44/32/22
- Fork
- RockShox 30, coil spring, preload, TurnKey lockout, G2 Geometry w/51mm offset on 29ers, 100mm travel (13.5: 80mm travel)
- Frame
- Alpha Silver Aluminum w/semi-integrated head tube, rack & fender mounts, G2 Geometry on 29ers
- Shifters
- Shimano Altus M370, 9 speed
- Tape/Grips
- Bontrager Race
- Color
- Waterloo Blue
- Size
- 23-inch
- Wheel Size
- 29-inch
- Front Tire
- Bontrager XR2, 29x2.20" front, 29x2.00" rear (13.5 & 15.5: 27.5x2.20")
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.
Inspection
Suspension service
Confirm fork and rear shock service intervals and check pivot bearings for play.