Trek Marlin 5 Gen 3

£624.99

Finance available with Novuna Personal Finance

30 days free insurance available

XS
S
M
ML
L
XL
XXL

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.

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Will my bike have a curved top tube?

Smaller frames have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frame sizes have a straight top tube because taller riders with longer legs typically don't have the same issues with standover height.

Fit for every rider

Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you're on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.

High tech, high value

Marlin looks and feels great. It's packed with features usually found only on more expensive bikes, like a stylish frame with internal shift cable and brake hose routing, which can help your cables last longer by protecting them from the elements.

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Shimano CUES

Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano's new LINKGLIDE drivetrain technology for significantly increased life on wear items like chain, cassette and chainrings.

A better way to produce aluminium

Starting in 2024, we began removing high-emission aluminium from our manufacturing and replacing it with low-emission aluminium made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.

Shimano LINKGLIDE

LINKGLIDE technology has been specifically engineered for incredible durability while still delivering smooth and decisive shifting - along with a great pedalling experience. Available exclusively on Shimano CUES drivetrains.

How tall are you?

To measure your height, stand up straight, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.

Sizing

size-table

SizeRider HeightInseam
XS

145 - 155 cm

4'9" - 5'1"

69 - 73 cm

27" - 29"

S

155 - 165 cm

5'1" - 5'5"

74 - 78 cm

29" - 31"

M

165 - 177 cm

5'5" - 5'10"

79 - 83 cm

31" - 33"

ML

173 - 180 cm

5'8" - 5'11"

81 - 86 cm

32" - 34"

L

177 - 188 cm

5'10" - 6'2"

84 - 89 cm

33" - 35"

XL

188 - 195 cm

6'2" - 6'5"

89 - 91 cm

35" - 36"

2XL

195 - 203 cm

6'5" - 6'8"

91 - 97 cm

36" - 38"

Frame Size XS, Alpha Silver Aluminium, curved top tube, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
ForkSR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 80 mm travel SR Suntour XCT 30, coil spring, preload, hydraulic lockout, 42 mm offset for 27.5'' wheel, 100 mm QR,
Wheel SizeFront 27.5 / Rear 27.5
WheelsBontrager Connection, double-wall, 32-hole, 20 mm width, Schrader valve Formula DC-20, alloy, 6-bolt, 100x5 mm Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm
TyresBontrager Montrose Comp, wire bead, 30 tpi, 27.5x2.40"
ShifterShimano U4000, 9-speed Shimano U4000, 9 speed
Rear DerailleurShimano CUES U4000
CrankShimano CUES U4001, 32T, 52mm chain line, 170 mm length Shimano, 73 mm, threaded cartridge, 122.5 mm spindle
CassetteShimano LINKGLIDE LG300, 11-46, 9-speed
ChainShimano LG500
PedalsVP-536 nylon platform
Front BrakeShimano RT26, 6-bolt, 160 mm
Rear BrakeShimano RT26, 6-bolt, 160 mm
HandlebarBontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
GripsTrek Line Comp, nylon lock-on
StemBontrager Comp, 31.8 mm, 7-degree, 35 mm length
HeadsetSemi-integrated, 1-1/8"
SeatpostBontrager alloy, 31.6 mm, 12 mm offset, 330 mm length
SaddleBontrager Verse Short, stainless steel rails
Weight15.1 kg

Please note: Manufacturers can sometimes change the specification of the products from time to time.

More reasons to buy from us

We price match all products on a like for like basis.

To qualify the item must be available in stock with a UK supplier and any additional costs taken into consideration.

i.e delivery charges, buyers premium, assembly charges.

Call us on 01823 252499 before you make your purchase to enquire about price matching a product.

Please read our full price match policy.

With all bike sales you will receive an informational bike pack that contains a 15% Off accessories voucher inside.

This voucher is redeemable at your nearest Bicycle Chain Store.

We currently have stores in Yeovil, Taunton, Bridgwater, Weston-Super-Mare and Hereford.

This is part of our 'Support Local Business' initiative, where we want to see local riders supported by their local bike shops.

We hope to see you in store soon.

When you buy a bike from us in the store or come to collect your Click & Collect order we will adjust your new bike to fit you.

This includes adjusting saddle height, saddle position and where possible adjusting the brake levers / gear shifters.

We will also adjust any accessories you have purchased with your bike where applicable.

When you buy a bike from us you will get a free service at your nearest Bicycle Chain store within 6 weeks of taking delivery of your bike.

The free service is put in place to make sure the bike you have purchased is running correctly and to adjust out any cable stretch that happens to any new bike.

The type of bike you have bought and the type of riding you have planned will affect how soon you need to book your free service.

  • Light use - 6 weeks
  • Daily commuting / moderate use - 4 weeks
  • Hard / aggressive use - After the first 2 rides

However if you experience any issues at any time you should stop riding your bike and book your bike in for its free service immediately.

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  • Sunday: Closed