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The Marlin 6 is the perfect ride for progressing your skills on the trails. Its updated slacker frame geometry makes it easier to control.
The Marlin 6 is the perfect ride for progressing your skills on the trails. Its updated slacker frame geometry makes it easier to control.
Trek

Trek Marlin 6 Gen 3 XC MTB in Lava

£850.00
Size Guide
Trek Marlin 6 Gen 3 XC MTB in Gloss Lavender Haze Trek Marlin 6 Gen 3 XC MTB in Matte Lichen/Keswick Green Fade
Pre-Order

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Hassle free returns

RETURNS POLICY

If you'd like to exchange or return your order please include your name and order number with the return, our returns address is:

Returns
Activ Cycles
Unit 1&2 Kingfisher Business Park
Henwood
Ashford
TN24 8DG

Subject to the terms set out below we are happy to offer a refund or exchange on all goods except goods which are special orders or nutrition products, or where we have expressly advised you that there is no right to return the goods ordered (save in the event the goods are faulty) provided the goods are returned to us within 14 days of delivery to you.

If you return goods to us and request a different size or alternative product we will send it out free of charge (subject to stock availability). If you require a refund (or the replacement item is not in stock) we aim to process refunds within 2 working days of receipt of the goods. It is your responsibility to ensure that the item is returned to us safely and securely and in saleable condition.

Refunds will be processed using the same method of payment used for the original purchase. Due to the high incidence of fraud, we regret that we are unable to offer any refund without a valid receipt/delivery note.

If the product is faulty or wrong due to a mistake on our part then we will send out replacements free of charge and supply you with a prepaid returns label. For all goods returned please include a letter giving details along with a copy of the original receipt. Returned goods must be unused and with all appropriate packaging and labelling intact.

Your rights to return goods are protected under the Consumer Protection (Distance Selling) Regulations 2000 which can be found at theConsumer Protection (Distance Selling) Regulations 2000 (legislation.gov.uk).

Trek Marlin 6 Gen 3 XC MTB in Lava

Season:2026

Brand:Trek

Code:57365RED

The Marlin 6 is the perfect ride for progressing your skills on the trails.

Its updated slacker frame geometry makes it easier to control on descents while the suspension fork takes the edge off bumpy trails. Integrated rack and kickstand mounts make it easy to add accessories to this versatile steed.

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 do not have the same issues with standover height.

Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you are 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.

Marlin looks and feels great. It is 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 the cables last longer by protecting them from the elements.

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.

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

Technical Information
  • Frame
    XS Alpha Silver Aluminium, curved top tube, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
  • Frame
    ML , M , L , S , XL , XXL Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
  • Fork
    XS , S RockShox Judy, coil spring, preload, TurnKey lockout, 42 mm offset for 27.5" wheel, 100 mm QR, 100 mm travel
  • Fork
    ML , M , L , XL , XXL RockShox Judy, coil spring, preload, TurnKey lockout, 46 mm offset for 29" wheel, 100 mm QR, 100 mm travel
  • Front Hub
    ML , M , XS , L , S , XL , XXL Formula DC-20, alloy, 6-bolt, 100 mm
  • Rear Hub
    ML , M , XS , L , S , XL , XXL Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR
  • Rear Skewer
    173x5 mm QR
  • Rim
    ML , M , XS , L , S , XL , XXL Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve
  • Rim
    ML , M , L , XL , XXL Bontrager Kovee, double-wall, Tubeless-Ready, 32-hole, 23 mm width, Presta valve
  • Tire
    XS , S Maxxis IKON, tubeless ready, EXO casing, folding bead, 60 tpi, 27.5x2.35''
  • Tire
    ML , M , L , XL , XXL Maxxis Rekon Race, tubeless ready, EXO casing, folding bead, 60 tpi, 29x2.35"
  • Rim Strip
    ML , M , XS , L , S , XL , XXL Bontrager TLR
  • Shifter
    ML , M , XS , L , S , XL , XXL Shimano U6000, 10-speed
  • Rear Derailleur
    ML , M , XS , L , S , XL , XXL Shimano CUES U6000 GS
  • Crank
    ML , M , XS , S Shimano U4000, 30T chainring, 170 mm length
  • Crank
    L , XL , XXL Shimano U4000, 30T chainring, 175 mm length
  • Bottom Bracket
    ML , M , XS , L , S , XL , XXL Shimano, 73 mm, threaded cartridge, 122.5 mm spindle
  • Cassette
    ML , M , XS , L , S , XL , XXL Shimano CUES LG300, LINKGLIDE, 11-48, 10-speed
  • Chain
    ML , M , XS , L , S , XL , XXL Shimano LG500
  • Pedal
    ML , M , XS , L , S , XL , XXL VP-536 nylon platform
  • Saddle
    ML , M , XS , L , S , XL , XXL Bontrager Verse Short, stainless steel rails
  • Seatpost
    XS , S TranzX JD-YSI34, 100 mm travel, internal routing, 34.9 mm, 350 mm length
  • Seatpost
    M TranzX JD-YSI34, 125 mm travel, internal routing, 34.9 mm, 405 mm length
  • Seatpost
    ML , L , XL TranzX JD-YSI34, 150 mm travel, internal routing, 34.9 mm, 456 mm length
  • Seatpost
    XXL TranzX JD-YSI34, 170 mm travel, internal routing, 34.9 mm, 500 mm length
  • Handlebar
    XS Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
  • Handlebar
    S Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width
  • Handlebar
    ML , M , L , XL , XXL Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
  • Grips
    ML , M , XS , L , S , XL , XXL Trek Line Comp, nylon lock-on
  • Stem
    XS , S Bontrager Comp, 31.8 mm, 35 mm length
  • Stem
    ML , M , L Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
  • Stem
    XL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length
  • Stem
    XXL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length
  • Headset
    ML , M , XS , L , S , XL , XXL Semi-integrated, 1-1/8"
  • Brake
    ML , M , L , XL , XXL Shimano MT200 hydraulic disc
  • Brake Rotor
    ML , M , XS , L , S , XL , XXL Shimano RT26, 6-bolt, 160 mm
  • Brake Rotor
    ML , M , L , XL , XXL Shimano RT26, 6-bolt, 180 mm
  • Brake Set
    ML , M , XS , L , S , XL , XXL Shimano MT200 hydraulic disc
  • Weight
    M - 15.00 kg / 33.07 lbs
  • Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
Sizing Information
Professional Opinion
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