Trek Marlin 5 (Gen 3) Hardtail Mountain Bike 2026

Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. It features a trail-savvy frame with a suspension fork, 9-speed Shimano CUES shifting, and mounts for a rack and kickstand that make it an ideal choice for trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike.

SPECIFICATIONS:

*Please note - spec applies to all sizes unless listed separately

Frameset
*Frame
Size: 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
*Fork
Size: XS
SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel
Size: S
SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
Size: M , ML , L , XL , XXL
SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 29" wheel, 100 mm QR, 100 mm travel

Wheels
Hub front: Formula DC-20, alloy, 6-bolt, 100x5mm
Skewer front: Trek Thru-Skew
Hub rear: Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5mm
Skewer rear: 173x5mm QR
Rim: Bontrager Connection, double-wall, 32-hole, 20mm width, schrader valve
Spokes
14g stainless steel, black
*Tire
Size: XS , S
Bontrager Montrose Comp, wire bead, 30 tpi, 27.5x2.4''
Size: M , ML , L , XL , XXL
Bontrager Montrose Comp, wire bead, 30 tpi, 29x2.4''

Drivetrain
Shifter: Shimano U4000, 9 speed
Rear derailleur: Shimano CUES U4000
*Crank
Size: XS , S , M , ML
Shimano CUES U4001, 32T, 52mm chainline, 170mm length
Size: L , XL , XXL
Shimano CUES U4001, 32T, 52mm chainline, 175mm length
Bottom bracket: Shimano, 73mm, threaded cartridge, 122.5mm spindle
Cassette: Shimano LINKGLIDE LG300, 11-46, 9 speed
Chain: Shimano LG500
Pedal: VP-536 nylon platform

Components
Saddle: Bontrager Verse Short, stainless steel rails
*Seatpost
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
*Handlebar
Size: 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: Trek Line Comp, nylon lock-on
*Stem
Size: 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
Headset: Semi-integrated, 1-1/8"
Brake: Shimano MT200 hydraulic disc
*Brake rotor
Size: XS , S , M , ML , L , XL , XXL
Shimano RT26, 6-bolt, 160mm
Size: M , ML , L , XL , XXL
Shimano RT26, 6-bolt, 180mm
Brake Set: Shimano MT200 hydraulic disc

Weight
Weight
M - 15.10 kg / 33.29 lbs
Weight limit
This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
*We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.