Trek Marlin 6 Gen 3 2025
2025 Mountain
Estimate price |
1,046$
Weight | 14.5 kg 
Bike details
Overview
Key information split into simple groups.
Bike summary
-
Category -
Frame Aluminum -
Travel Front 80mm -
Fork RockShox Judy
-
Groupset CUES -
Suspension Hardtail -
Drivetrain 1 × 10 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
14.5"
144cm - 156cm
15.5"
154cm - 166cm
17.5"
164cm - 176cm
18.5"
173cm - 180cm
19.5"
177cm - 189cm
21.5"
187cm - 196cm
23"
194cm - 203cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Size: XXS, XS, Alpha Silver Aluminum, curved top tube, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew; Size: S, M, ML, L, XL, XXL, Alpha Silver Aluminum, internal derailleur & dropper post routing, rack and kickstand mount, 135x5mm ThruSkew
Suspension Fork
Size: XXS, RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5'' wheel, 100mm QR, 80mm travel; Size: XS, S, RockShox Judy, coil spring, preload, TurnKey lockout, 42mm offset for 27.5'' wheel, 100mm QR, 100mm travel; Size: M, ML, L, XL, XXL, RockShox Judy, coil spring, preload, TurnKey lockout, 46mm offset for 29'' wheel, 100mm QR, 100mm travel
Drivetrain
Rear Derailleur
Shimano CUES U6000 GS
Shift Levers
Shimano U6000, 10 speed
Cassette
Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Crank
Size: XXS, XS, FSA Alpha Drive, 30T, 160mm length; Size: S, M, ML, FSA Alpha Drive, 30T, 170mm length; Size: L, XL, XXL, FSA Alpha Drive, 30T, 175mm length
Bottom Bracket
FSA, 73mm, threaded cartridge, 122.5mm spindle
Chain
Shimano LG500, 9/10/11 speed
Pedals
VP-536 nylon platform
Wheels
Front Hub
Formula DC-20, alloy, 6-bolt, 100mm ThruSkew
Rear Hub
Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR
Rims
Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23mm width, Presta valve
Tires
Size: XXS, Bontrager XT3 Elite, Tubeless Ready, Inner Strength casing, wire bead, 60 tpi, 26x2.35''; Size: XS, S, Maxxis Ardent Race, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.35''; Size: XS, S, Maxxis IKON, tubeless ready, EXO casing, folding bead, 60tpi, 27.5x2.35''; Size: M, ML, L, XL, XXL, Maxxis Ardent Race, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.35''; Size: M, ML, L, XL, Maxxis IKON, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.35''
Brakes
Brakes
Size: XXS, XS, S, Tektro HD-M276 hydraulic disc, short reach; Size: M, ML, L, XL, XXL, Tektro HD-M275 hydraulic disc
Cockpit
Stem
Size: XXS, XS, S, Bontrager Comp, 31.8mm, 7 degree, 35mm length; Size: M, ML, L, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length; Size: XL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length; Size: XXL, Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length
Handlebar
Size: XXS, XS, Bontrager alloy, 31.8mm, 5mm rise, 690mm width; Size: S, Bontrager alloy, 31.8mm, 15mm rise, 720mm width; Size: M, ML, L, XL, XXL, Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips
Bontrager XR Trail Comp, nylon lock-on
Headset
Semi-integrated, 1-1/8''
Seat
Saddle
Bontrager Verse Short, stainless steel rails
Seatpost
Size: XXS, Bontrager alloy, 31.6mm, 12mm offset, 300mm length; Size: XS, S, M, Bontrager alloy, 31.6mm, 12mm offset, 330mm length; Size: ML, L, XL, XXL, Bontrager alloy, 31.6mm, 12mm offset, 400mm length
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | 14.5" | 15.5" | 17.5" | 18.5" | 19.5" | 21.5" | 23" |
|---|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.444 mm | 1.378 mm | 1.384 mm | 1.349 mm | 1.315 mm | 1.287 mm | 1.252 mm |
| Bottom Bracket Height | 313 mm | 313 mm | 308 mm | 308 mm | 308 mm | 308 mm | 308 mm |
| Front Center | 663 mm | 692 mm | 732 mm | 749 mm | 765 mm | 798 mm | 829 mm |
| Rake | 42 mm | 42 mm | 46 mm | 46 mm | 46 mm | 46 mm | 46 mm |
| Trail | 110 mm | 110 mm | 110 mm | 110 mm | 110 mm | 110 mm | 110 mm |
| Stack | 563 mm | 572 mm | 609 mm | 614 mm | 618 mm | 637 mm | 651 mm |
| Reach | 390 mm | 415 mm | 440 mm | 455 mm | 470 mm | 495 mm | 520 mm |
| Top Tube Length | 551 mm | 579 mm | 615 mm | 631 mm | 647 mm | 678 mm | 707 mm |
| Seat Tube Angle | 74 ° | 74 ° | 74 ° | 74 ° | 74 ° | 74 ° | 74 ° |
| Seat Tube Length | 340 mm | 370 mm | 420 mm | 435 mm | 450 mm | 500 mm | 540 mm |
| Head Tube Angle | 66.5 ° | 66.5 ° | 66.5 ° | 66.5 ° | 66.5 ° | 66.5 ° | 66.5 ° |
| Head Tube Length | 90 mm | 100 mm | 105 mm | 110 mm | 115 mm | 135 mm | 150 mm |
| Chainstay Length | 433 mm | 433 mm | 438 mm | 438 mm | 438 mm | 438 mm | 438 mm |
| Wheelbase | 1092 mm | 1121 mm | 1163 mm | 1180 mm | 1197 mm | 1230 mm | 1261 mm |
| Bottom Bracket Drop | 45 mm | 45 mm | 60 mm | 60 mm | 60 mm | 60 mm | 60 mm |
| Standover Height | 658 mm | 692 mm | 747 mm | 759 mm | 771 mm | 791 mm | 816 mm |
| Wheels | 27" | 27" | 29" | 29" | 29" | 29" | 29" |
| Rider Min Height | 144 cm | 154 cm | 164 cm | 173 cm | 177 cm | 187 cm | 194 cm |
| Rider Max Height | 156 cm | 166 cm | 176 cm | 180 cm | 189 cm | 196 cm | 203 cm |