Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2025 Trek Marlin 6 Gen 3
Value Guide market data · 2025 Trek Marlin 6 Gen 3
12-month trend
18%
Direction and magnitude, not judgment
vs. category average
2%
Drops faster than category avg
Price over time - 2025 Trek Marlin 6 Gen 3
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Marlin model years
2026$1,302 - $1,512▲ 17% vs. 2025
2025$1,116 - $1,296Currently viewing
2024$1,209 - $1,404▲ 8% vs. 2025
2023$1,209 - $1,404▲ 8% vs. 2025
2022$1,237 - $1,436▲ 11% vs. 2025
2021$1,116 - $1,2960% vs. 2025
2020$744 - $864▼ 33% vs. 2025
2019$735 - $853▼ 34% vs. 2025
2018$698 - $810▼ 37% vs. 2025
2017$698 - $810▼ 37% vs. 2025
2016$716 - $832▼ 36% vs. 2025
2015$660 - $767▼ 41% vs. 2025
2013$642 - $745▼ 42% vs. 2025
2012$632 - $734▼ 43% vs. 2025
2011$595 - $691▼ 47% vs. 20252025 Marlin 6 Gen 3 lineup
Overview
About this bike
2025 Trek Marlin 6 Gen 3 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
- Fork
- RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel / RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel / RockShox Judy, coil spring, preload, TurnKey lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel
Drivetrain
- Groupset
- Shimano CUES
- Chain
- Shimano LG500, 9/10/11 speed
- Crank
- FSA Alpha Drive, 30T, 160mm length / FSA Alpha Drive, 30T, 170mm length / FSA Alpha Drive, 30T, 175mm length
- Rear derailleur
- Shimano CUES U6000 GS
- Cassette
- Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
- Bottom bracket
- FSA, 73mm, threaded cartridge, 122.5mm spindle
- Shifter
- Shimano U6000, 10 speed
Brakes
- Brake rotor
- Tektro, 6-bolt, 160mm
- Brake Set
- Tektro HD-M276 hydraulic disc, short reach / Tektro HD-M275 hydraulic disc
Cockpit
- Headset
- Semi-integrated, 1-1/8''
- Headset part (see also: Bearing)
- 1-1/8'' threadless, sealed cartridge bearings
- Stem
- Bontrager Comp, 31.8mm, 7 degree, 35mm length / Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length / Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length / Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length
- Handlebar
- Bontrager alloy, 31.8mm, 5mm rise, 690mm width / Bontrager alloy, 31.8mm, 15mm rise, 720mm width / Bontrager alloy, 31.8mm, 15mm rise, 750mm width
- Saddle
- Bontrager Verse Short, stainless steel rails
- Grips
- Bontrager XR Trail Comp, nylon lock-on
- Seatpost
- Bontrager alloy, 31.6mm, 12mm offset, 300mm length / Bontrager alloy, 31.6mm, 12mm offset, 330mm length / Bontrager alloy, 31.6mm, 12mm offset, 400mm length
Wheels & Tires
- Nipple
- 14g stainless steel, black
- Hub front
- Formula DC-20, alloy, 6-bolt, 100mm
- Skewer rear
- 173x5mm QR
- Hub rear
- Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm
- Tire
- Bontrager XT3 Elite, Tubeless Ready, Inner Strength casing, wire bead, 60 tpi, 26x2.35'' / Maxxis Ardent Race, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.35'' / Maxxis IKON, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.35'' / Maxxis Ardent Race, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.35'' / Maxxis IKON, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.35''
- Rim
- Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve
- Skewer front
- 116x5mm QR
Pedals
- Pedal
- VP-536 nylon platform
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.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.