Trek Marlin 4 Gen 3 Bike (2026)

Trek Marlin 4 Gen 3 Mountain Bike 2026 in Black. Trek Part Number: 5336959

The Marlin 5 is a trail-ready bike, ideal for everyday adventures, whether on or off the trail. It has a trail-ready frame with a suspension fork, Shimano CUES 9-speed shifting, and rack and kickstand mounts make it the ideal choice for trail riders, or for those looking for a comfortable and stable bike for getting around town with the durability of a real mountain bike.

Frameset

• Frame: Alpha Silver Aluminum, internal derailleur and dropper post routing, rack and kickstand mounts, and 135x5mm ThruSkew thru axle
• Fork: SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 46mm offset for 29er wheels, 100mm quick release, 100mm travel
• Maximum compatible fork travel: 120 mm

Wheels

• Front Hub: Formula DC-20, alloy, 6-bolt, 5x100mm QR
• Rear Hub: Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm QR
• Rim: Bontrager Connection, double-wall, 32-hole, 20mm width, Schrader valve
• Tire: Bontrager XT3 Comp, wire bead, 30tpi, 29x2.40"
• Max. Tire Size: Frame: 29x2.40": Fork: See manufacturer

Drivetrain

• Shifter: Shimano U4000, 9-speed
• Derailleur: Shimano CUES U4000
• BB: Prowheel C10Y-NW, narrow-wide steel chainring, 170mm long
• BB: VP BC73, 73mm, threaded cartridge
• Cassette: Shimano LINKGLIDE LG300, 11-46, 9-speed
• Chain: Shimano LG500
• Pedal: VP-536 nylon platform
• Maximum chainring size: 1x: See the FAQ Frequent, 2x: 36T, 3x: 42T

Components

• Seatpost: Bontrager Alloy, 31.6mm, 12mm offset, 400mm length
• Handlebar: Bontrager Aluminum, 31.8mm, 15mm rise, 750mm width
• Grips: Bontrager XR Endurance Comp, lockout
• Stem: Bontrager Comp, 31.8mm, Blendr-compatible, 7-degree, 50mm rise
• Headset: Semi-integrated 1-1/8"
• Brake Kit: Tektro HD-M275 Hydraulic Disc
• Brake Rotor: Tektro, 6-bolt, 160 mm
• Rotor Size: Maximum rotor sizes - Frame: 180 mm (XXS: 160 mm), Fork: see fork manufacturer

Weight

• Weight: M - 15.10 kg / 33.29 lbs (with tubes)
• Weight Limit: This bike has a maximum weight limit (combined weight of bicycle, rider, and cargo) of 136 kg.