Trek Marlin 5 GEN 3 2027

In stock at Fife Cycles. Free local delivery across Fife, Dundee & St Andrews — built, checked and ready to ride. Pay in 3 with Klarna. Buying for Christmas? We'll keep it hidden until Christmas Eve.

The Marlin 5 is our best-selling mountain bike, and the one we point most people at. It's the first step in the range to get Shimano's CUES drivetrain — noticeably crisper, tougher shifting than the 8-speed on the Marlin 4 — plus proper Shimano hydraulic disc brakes and a lockout fork. Gen 3 geometry is slack and stable enough for real trails, but it's still a comfortable, upright bike for the school run or the commute into Dundee.

Why we rate it

• Shimano CUES 9-speed with an 11–46 cassette — wide-range gearing that'll get you up Fife's steeper climbs, and Linkglide tech that lasts far longer than old-school chains and cassettes.
• Shimano MT200 hydraulic disc brakes — confident, low-effort stopping in the wet.
• SR Suntour XCT 30 fork with hydraulic lockout for smooth sections and tarmac.
• Alpha Silver aluminium frame with internal cable routing, dropper-post routing, rack and kickstand mounts, and 2.4" tyre clearance.
• 29" wheels on M and up, 27.5" on XS and S so smaller riders get the same handling.

Who it's for

New and returning riders who want a real mountain bike that'll handle trail centres, forest tracks and everyday riding without needing upgrades straight away. If you're choosing between the 4 and the 5, the extra £100 for CUES is worth it.

Key spec

• Frame: Alpha Silver Aluminium, 135x5mm ThruSkew rear axle
• Fork: SR Suntour XCT 30, coil, preload, hydraulic lockout, 100mm (80mm on XS)
• Drivetrain: Shimano CUES U4000 1x9, 32T crank, 11–46 Linkglide cassette
• Brakes: Shimano MT200 hydraulic disc, 160/180mm rotors
• Wheels: Bontrager Connection double-wall rims, Formula hubs
• Tyres: Bontrager Montrose Comp 2.4"
• Weight: approx. 15.1kg (M)
• Sizes: XS, S, M, M/L, L, XL, XXL

Sizing

XS 147–155cm · S 153–162cm · M 161–172cm · M/L 165–175cm · L 174–185cm · XL 184–195cm · XXL 192–203cm. Not sure? Call us on 01334 838989 and we'll size you properly.

Buying from Fife Cycles

• Free delivery across Fife, Dundee and St Andrews, or collect from 2 Meadow Road, Leuchars
• Pay in 3 with Klarna at checkout — 18+, T&Cs apply
• Buying for Christmas? Order now and we'll keep it boxed and hidden until Christmas Eve, then deliver or hand it over on the day you choose
• Trek Authorised Dealer — full warranty and a free first service
• Cycle to Work schemes accepted