2026 Trek Marlin 4 Gen 3 -
Frame
Sizes XXS, XS
- Alpha Silver Aluminum
- Curved top tube
- Internal derailleur & dropper post routing
- Rack & kickstand mounts
- 135x5mm ThruSkew
Sizes S, M, ML, L, XL
- Alpha Silver Aluminum
- Internal derailleur & dropper post routing
- Rack & kickstand mounts
- 135x5mm ThruSkew
Fork
Size XXS
- SR Suntour XCM 30
- Coil spring, preload, hydraulic lockout
- 42mm offset (26")
- 100mm QR
- 100mm travel
Size XS
- SR Suntour XCE 28
- Coil spring, preload
- 42mm offset (27.5")
- 100mm QR
- 80mm travel
Size S
- SR Suntour XCE 28
- Coil spring, preload
- 42mm offset (27.5")
- 100mm QR
- 100mm travel
Sizes M, ML, L, XL
- SR Suntour XCE 28
- Coil spring, preload
- 46mm offset (29")
- 100mm QR
- 100mm travel
Wheels
Front Hub
- Formula DC-20, alloy, 6-bolt, 100x5mm
Rear Hub
- Formula DC-22, alloy, 6-bolt
- Shimano 8/9/10 freehub
- 135x5mm
Rear Skewer
- 173x5mm QR
Rims
- Bontrager Connection
- Double-wall, 32-hole, 20mm internal width
- Schrader valve
Tires
Size XXS
- Bontrager Montrose Comp, wire bead, 30 tpi, 26x2.35"
Sizes XS, S
- Bontrager Montrose Comp, wire bead, 30 tpi, 27.5x2.4"
Sizes M, ML, L, XL
- Bontrager Montrose Comp, wire bead, 30 tpi, 29x2.4"
Drivetrain
Shifter
- Shimano M315, 8-speed
Rear Derailleur
- Shimano ESSA U2000
Crankset
Sizes XXS, XS
- ProWheel alloy, 30T narrow-wide steel ring, 160mm crank length
Sizes S, M, ML
- ProWheel alloy, 30T narrow-wide steel ring, 170mm crank length
Sizes L, XL
- ProWheel alloy, 30T narrow-wide steel ring, 175mm crank length
Cassette
- Shimano HG300, 11–45, 8-speed
Chain
- KMC Z8.3, 8-speed
Pedals
- Nylon platform
Components
Saddle
- Bontrager Verse Short, stainless steel rails
Seatpost
Size XXS
- Bontrager alloy, 31.6mm, 12mm offset, 300mm length
Sizes XS, S, M
- Bontrager alloy, 31.6mm, 12mm offset, 330mm length
Sizes ML, L, XL
- Bontrager alloy, 31.6mm, 12mm offset, 400mm length
Handlebar
Sizes XXS, XS
- Bontrager alloy, 31.8mm, 5mm rise, 690mm width
Size S
- Bontrager alloy, 31.8mm, 15mm rise, 720mm width
Sizes M, ML, L, XL
- Bontrager alloy, 31.8mm, 15mm rise, 750mm width
Grips
- Trek Line Comp, nylon lock-on
Stem
Sizes XXS, XS, S
- Bontrager Comp, 31.8mm, 7° rise, 35mm length
Sizes M, ML, L
- Bontrager Comp, 31.8mm, Blendr-compatible, 7°, 50mm length
Size XL
- Bontrager Comp, 31.8mm, Blendr-compatible, 7°, 60mm length
Headset
- Semi-integrated, 1-1/8"
Brakes
Sizes XXS, XS, S
- Tektro HD-M276 hydraulic disc
- Power BH-M286TF hydraulic disc, 160mm rotor
Sizes M, ML, L, XL
- Tektro HD-M275 hydraulic disc
- Power BH-M286TF hydraulic disc, 180mm rotor
Brake Rotors
Sizes XXS, XS, S, M, ML, L, XL
- Tektro, 6-bolt, 160mm
Sizes M, ML, L, XL
- Tektro, 6-bolt, 180mm
Weight
- Size M: 14.90 kg / 32.85 lbs
Weight Limit
Maximum total system weight (bike + rider + cargo): 300 lb / 136 kg
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