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Trek Marlin 7 Gen 3 Grey

Cross Country Bicycle

SRP £825 Save 6% Web Price: £775.00

From 27.14 per month | view details | view details
15 Podium Points™ with this bike
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Size Options & Purchase

Select a size:
Collect In Store*Delivery
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Available*In Store Only

*Collect In Store - if you would like to collect your bike in store, please use our Click & Collect payment method or call 0118 9821021 to reserve and ensure your bike is ready for your arrival.

ETAs are based on manufacturer's latest data.

Important lead time information

Where delivery times are stated as an ETA month this is based on the latest information from the manufacturer. These dates should be treated as a guide and may be subject to change. Due to an increased strain in global supply chains, factory and shipping schedules can be easily disrupted.

Should you place a future order with us we will monitor the bikes ETA and keep you informed of any changes.

For more detailed information please read here.


This Trek Marlin 7 Gen 3 Grey is available with our legendary Podium Point free accessory scheme.

Total trail confidence. The Trek Marlin is a real standout performer in its category with a fantastic frameset and a great specification.

The all new Trek Marlin features an Alpha Silver Aluminium frame with modern trail-bike updates: a slacker headtube, longer reach and wider bars, all which boost confidence for taking on harder trails. Plus, there's clearance for grippy 2.4" tires on all sizes.

If you get a little too rowdy trying out the rock garden and need to fix a flat? The all-new Thru Skew rear axle makes taking the rear wheel off and putting it back on a breeze for riders, thanks to a closed drop-out system that is safer, simpler and stronger. You can even pocket the removable lever for added security or a cleaner look.

Updated cable routing means Marlin is now compatible with internally routed dropper posts! The Marlin also comes with foam tubes wrapped around the internally routed derailleur housing and brake hoses, silencing rattles from inside the frame, while a new full-coverage chain stay guard quiets chain slap and gives the Marlin a trail-ready look.

Marlins are size proportionally all the way through the range. The smallest XXS size features a curved top tube and 26" wheels. XS and S sizes features 27.5" wheels whereas the larger sizes feature 29" wheels. This means all sizes are appropriately sized and balanced for the typical rider.

IMPORTANT: This bicycle is supplied without pedals. Pedals for this bicycle can be selected for no cost using Podium Points™.


Generation 3
Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew (Curved top tube on XXS & XS)
RockShox Judy, coil spring, preload, TurnKey lockout, 100 mm QR, 100 mm travel (80mm on XXS)
Rear Shock
Shimano Deore M4100, 10 speed
Rear Mech
Shimano Deore M5120, long cage
Front Mech
Bottom Bracket
FSA, 73 mm, threaded cartridge, 122.5 mm spindle
FSA Alpha Drive, 28T steel ring, Boost
Shimano Deore M4100, 11-46, 10-speed
KMC X10, 10-speed
Shimano MT200 hydraulic disc
not supplied
Rim: Bontrager Kovee, double-wall, Tubeless Ready, 28-hole, 23 mm width, Presta valve, Hub F: Formula DC-20, alloy, 6-bolt, 100 mm ThruSkew, Hub R: Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR
Bontrager XT3 Comp, wire bead, XXS - 26x2.40", XS & S - 27.5x2.40", Size:M , ML , L , XL , XXL - 29x2.40"
Bontrager alloy, 31.8 mm, 15 mm rise
Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree
Bontrager XR Trail Comp, nylon lock-on
Bontrager alloy, 31.6 mm, 12 mm offset,
Bontrager Arvada, steel rails, 138 mm width
Semi-integrated, 1-1/8"


We are an authorised Trek dealer and supply this Trek Marlin 7 Gen 3 Grey with a LIFETIME manufacturer's warranty. Read Warranty Terms


Rider Height (ft)
Rider Height (m)

Sizing information is provided as a general guide only. This is based on the average rider riding the bicycle in the style for which it is intended. This takes no account of a rider's personal proportions, physique, flexibility and biomechanics. If your height places you on, or near, a bicycle size step then we recommend you consider both sizes. All bicycles offer a range of handlebar and saddle adjustment which will enable you to fine tune your riding position once the correct size has been established. If you are unsure on sizing, we strongly recommend you visit our store so we can assist you. Pedal On offers advice and information on sizing in good faith, the final decision and responsibility on which size to purchase is yours.


Seat Tube C-T mm320340370420435450500540
Horiz. Top Tube mm521551579615631647678707
Seat Angle74.
Head Angle66.566.566.566.566.566.566.566.5
Head Tube mm9090100105110115135150
Chainstay mm433433433438438438438438
BB Offset mm3845456060606060
BB Height mm302313313308308308308308
Standover mm650658692747759771791816
Wheelbase mm10601092112111631180119712301261
Reach mm365390415440455470495520
Stack mm544563572609614618637651
Fork Rake mm4042424646464646
Fork Trail mm104110110110110110110110
Stem Length mm3535355050506070
Bar Width mm690690720750750750750750
Crank length mm155170170170175175175175
Wheel size26"27.5"27.5"29"29"29"29"29"

Cycle to Work

This bicycle is available for purchase using vouchers from the Green Commute Initiative, Cyclescheme and Gogeta. We also accept payments from My Benefits World. Please read the information provided on each scheme's webpage to understand the process which needs to be followed to pay by these methods.

Finance Options

The following finance options are available to apply for online immediately. If you are collecting your bicycle in store you can arrange your finance prior to visiting the store by selecting the required finance method as well as Click & Collect.

  • Buy Now Pay Later 12 Month
  • 12 Month Interest Free Finance

Finance quotation based on this Trek Marlin 7 Gen 3 Grey:

novuna finance

The credit advertised is provided by one credit provider with whom we have a commercial relationship.
Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority.