2025 Marlin 7 Gen 3 is no longer available.

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Trek Marlin 7 Gen 3

£898.99  £1,099.99

Colour: PENNYFLAKE

The Marlin 7 is your best friend on the trail and wherever else you roll thanks to its confidence-boosting trail geometry. It finds the perfect balance between price and performance with an upgraded RockShox suspension fork that makes quick work of rocks and bumps in your path and the huge gearing range of a SRAM 12-speed SX Eagle drivetrain.

You want a go-anywhere trail bike that's got upgrades where it matters most, but won't break the bank. You want to build skills on the trail, and need a bike with confidence-inspiring geometry and upgraded components that can keep up with your progress. You want a go-anywhere trail bike that's got upgrades where it matters most, but won't break the bank. You want to build skills on the trail, and need a bike with confidence-inspiring geometry and upgraded components that can keep up with you

A lightweight aluminium frame with modern trail riding geometry and internal routing that keeps cables protected and the bike looking sleek. An upgraded RockShox suspension fork smooths out rowdy trails, 12-speed SRAM SX Eagle shifting and the serious stopping power of hydraulic disc brakes. A lightweight aluminum frame with modern trail riding geometry and internal routing that keeps cables protected and the bike looking sleek. An upgraded RockShox suspension fork smooths out rowdy trails, 12-speed SRAM SX Eagle shifting, and the serious stopping power of hydraulic disc brakes.

The Marlin 7 is the go-to trail bike for those wanting to build skills on the singletrack and get the right bang for their buck with upgraded suspension and confidence-inspiring geometry. Marlin 7 is the go-to trail bike for those wanting to build skills on the singletrack and get the right bang for their buck with upgraded suspension and confidence-inspiring geometry.
- The Marlin Gen 3 gives you serious trail capability with bigger tyre clearance, internal dropper post routing, ThruSkew rear axle and longer, slacker geometry that gives you more stability on steeper trails and at higher speeds Marlin Gen 3 gives you serious trail capability, with big
- Its upgraded RockShox fork gives you 100 mm of suspension for turning rocks and roots in the trail into smooth-sailing Its upgraded RockShox fork gives you 100mm of suspension for turning rocks and roots in the trail into smooth-sailing
- Mudguard mounts make it easy to accessorise, so your mountain bike can double as a rugged commuter Fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter
- Internal routing makes it easy to add a dropper post that lets you lower your saddle on the fly for more confident descending Internal routing makes it easy to add a dropper post that lets you lower your saddle on the fly for more confident descendin
- Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier

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.

Upgrade your pedals and love your bike more
Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.

Frame Size ML, Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
ForkRockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout
Wheel SizeFront 29 / Rear 29
WheelsBontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve Formula DC-20 LW, alloy, 6-bolt, 100x5 mm Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm
TyresMaxxis Ardent, tubeless ready, EXO casing, folding bead, 60tpi, 29x2.40"
ShifterSRAM SX Eagle, 12-speed SRAM SX Eagle, 12 speed
Rear DerailleurSRAM SX Eagle, 12-speed
CrankSRAM SX Eagle, 30T steel ring, 49 mm chainline, 175 mm length Truvativ Powerspline, 73 mm, threaded cartridge, 118 mm spindle
CassetteSRAM PG-1210 Eagle, 11-50, 12-speed
ChainSRAM SX Eagle, 12-speed
PedalsVP-536 nylon platform
Front BrakeShimano MT200 hydraulic disc Shimano MT200 hydraulic disc Shimano RT26, 6-bolt, 180 mm // Shimano RT26, 6-bolt, 160 mm Max brake rotor size
Rear BrakeShimano MT200 hydraulic disc Shimano MT200 hydraulic disc Shimano RT26, 6-bolt, 180 mm // Shimano RT26, 6-bolt, 160 mm Max brake rotor size
HandlebarBontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
GripsBontrager XR Trail Comp, nylon lock-on // Bontrager XR Trail Comp, nylon lock-on
StemBontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
HeadsetSemi-integrated, 1-1/8"
SeatpostTranzX JD-YSP18, 150 mm travel, internal routing, 31.6 mm, 470 mm length
SaddleBontrager Verse Short, stainless steel rails
Weight15.03 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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