The Trek Marlin 5 Gen 3 2026 steps things up with 9-speed Shimano CUES — a complete matched drivetrain system built to shift more reliably and last longer than entry-level spec. Same proven Marlin frame with a meaningful upgrade where it counts on the trail.
WHO THIS BIKE SUITS
You want to ride trails regularly and need gear changes you can actually rely on.
You're upgrading from a lower-spec bike and want a noticeable improvement in drivetrain quality.
You want a hardtail equally at home on bridleways, bike park blues and the school run.
You want a lockout fork so you can switch between trail and road efficiently.
IF YOU'RE LOOKING FOR SOMETHING DIFFERENT
If you want a dropper post and slacker trail geometry as standard, the Marlin 6 is the next step.
If you're after the full trail spec with SRAM Eagle and Maxxis rubber, look at the Marlin 7.
WHERE IT SITS IN THE RANGE
The Marlin 5 sits in the middle of the entry Marlin range — a genuine upgrade over the Marlin 4 in drivetrain quality without moving into the trail-specific territory of the 6 and 7.
HOW IT RIDES
Drivetrain
Shimano CUES is a matched system — shifter, derailleur, cassette and chain designed to work together. More consistent shifting under load and better longevity than mismatched entry-level parts.
Fork
The hydraulic lockout fork lets you run suspension open on trails and locked out on road — more versatile than a basic coil spring setup.
Wheels
29” wheels roll over rough ground efficiently. The Bontrager Montrose Comp tyres handle mixed terrain comfortably.
THE FINAL WORD
The Trek Marlin 5 Gen 3 2026 is a genuinely capable trail hardtail at a sensible price. If you're comparing Marlin models, our team at ARN can talk you through the differences.
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, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Bike and frame weights are based on pre-production painted frames at time of publication. Weights may vary in final production.
Frame: Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
Fork: SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 29" wheel, 100 mm QR, 100 mm travel
Rear derailleur: Shimano CUES U4000
Cassette: Shimano LINKGLIDE LG300, 11-46, 9-speed
Chain: Shimano LG500
Crankset: Shimano CUES U4001, 32T, 52mm chain line, 175mm length
Brake set: Shimano MT200 hydraulic disc
Rotors: Shimano RT26, 6-bolt, 180 mm
Tyres: Bontrager Montrose Comp, wire bead, 30 tpi, 29x2.40"
Rims: Bontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve
Front hub: Formula DC-20, alloy, 6-bolt, 100x5 mm
Rear hub: Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm
Handlebar: Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Stem: Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
Grips: Trek Line Comp, nylon lock-on
Saddle: Bontrager Verse Short, stainless steel rails
Seatpost: Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
Pedals: VP-536 nylon platform
Personalised Bike Consultation
Not sure which model is perfect for you? Our expert team at All Ride Now in Midhurst, West Sussex is here to help you choose with confidence.
- Will you be riding mainly on or off-road?
- Do you prefer an upright or sportier riding position?
- Are you looking for longer range, lighter weight, or a more comfortable feel?
Through a friendly consultation – in-store, by phone, live chat or email – we’ll help you narrow down your options and find the bike that best fits your needs.
