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Marlin 4 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, 8-speed Shimano ESSA 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.

Trek

Trek Marlin 4 Gen 3 Blue Sage

£525.00

Size Guide

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Trek Marlin 4 Gen 3 Purple Flip to Black 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

Earn Rewards

When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

No Quibble Returns

Online/ Mail Order Returns:

If for any reason you are not satisfied, you can return any item ordered via mail order provided that the goods are complete with all relevant packaging in an unused and re-saleable condition within 14 days of the date of shipment for a refund or an exchange. It's that simple.
We make no charge for returns - there is no restocking fee
Returned goods must be unused, in a saleable condition and in their original packaging with all labels still attached. Please note that items showing signs of wear or those that have been engraved, altered, resized, or damaged in any way cannot be accepted for return.
We cannot accept returns on clothing that has been personalised e.g. with name printing
We will credit the card we have on file for you this may take up to 10 working days to appear as cleared funds
If the original payment was via PayPal we will credit the PayPal account that the order was placed with
Value of goods only will be refunded.
For the purpose of hygiene, shorts, knicks and tights with a seatpad cannot be returned

NOTE: Please do not tape up, or attach labels direct to the retail packaging, please wrap the product first.

Goods must be returned within 14 days of receipt.
Goods must be in original packaging.
Goods must not be fitted or used.
Goods must be accompanied with a copy of your Original Receipt and aCover note with your name, address, reason for return, explaining if you would like a exchange or refund

If you return something due to it not fitting or being suitable, you will need to pay the postage costs to return it to us.

If you return something due to it being faulty we refund up to £10 carriage for bikes & frames and £5 for smaller items. If your return exceeds this amount please contact us and we can arrange collection for you. Please state a date and collection address (not Saturday or Sunday) where the goods can be collected from.

We recommend you use recorded delivery or registered post to return items so as to cover yourself against loss.

Customers outside of the UK must follow the instructions belowalong with our standard returns procedure.

To help us deal with your return to us quickly and efficiently you must mark all returns as RETURNED GOODS – FAILED SALE. This must be clearly marked on the customs information document ( CN22 and/ or CN 23) on the outside of the packaging. Failure to do so may result in the goods being refused at customs in the UK and so being returned to the sender.

If you have paid import duty for goods received, and subsequently return the goods to us, it should be possible for you to claim a refund of duties from your local Customs Authority. To do this, you will need to show them proof of duty paid and proof of export (e.g. certificate of posting) when claiming your refund.

Should you have any further queries on duties payable/refundable, please contact your local Customs Authority.

Damaged Goods

Before you sign for your goods make sure you are satisfied the contents are not damaged.

If in any doubt write: "GOODS DAMAGED"

IMPORTANT: If you sign that the item as 'has been received in good condition' you will have no claim later if the product is found to be damaged.

Damaged goods must be reported within 24 hours of receipt.

Warranty & Warranty Returns

We never want an item to fail but we recognise that failures can happen. When you buy wih Pedal Revolution you can have total piece of mind and know that we will give you issue our full attention. Our team work with suppliers and brands to ensure any warranty case is handled with the upmost care and is processed as quickly as possible.

Warranty items need to be returned to us at the below address with the package clearly marked as "Warranty" so that we can send them to the supplier to start the warranty procedure - warranty cases are handled by the brand or supplier of the goods and normally have a 1-3 week turn around.

Warranty items must be returned with a copy of your original receipt (the is a requirement of the brands/ suppliers).

No monies can be refunded until an item is accepted for warranty by the brand/ supplier

Returns Address

Returns Dept
Pedal Revolution

63-67 Bethel Street

Norwich

Norfolk

NR2 1NR

Trek Marlin 4 Gen 3 Blue Sage

Season:2026

Brand:Trek

Code:57361GRN

Technical Information

*Please note – spec applies to all sizes unless listed separately

*Frame	Size:XS Alpha Silver Aluminium, curved top tube, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
*Frame	Size:S , M , ML , L , XL , XXL Alpha Silver Aluminium, internal derailleur and dropper post routing, rack and kickstand mount, 135x5 mm ThruSkew
*Fork	Size:XS , S RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 42mm offset for 27.5" wheel, 100mm QR, 100mm travel
*Fork	Size:M , ML , L , XL , XXL RockShox Judy Silver, Solo Air spring, rebound adjust, TurnKey hydraulic lockout, 46mm offset for 29" wheel, 100mm QR, 100mm travel
Hub front	Formula DC-20 LW, alloy, 6-bolt, 5x100 mm QR
Hub rear	Formula DC-22LW, 6-bolt, Shimano 8/9/10 freehub, 135x5 mm QR
Skewer rear	173x5 mm QR
*Rim	Size:XS , S , M , ML , L , XL , XXL Bontrager Kovee, double-wall, Tubeless-Ready, 28-hole, 23 mm width, Presta valve
*Rim	Size:M , ML , L , XL , XXL Bontrager Kovee, double-wall, Tubeless-Ready, 32-hole, 23 mm width, Presta valve
*Tyre	Size:XS , S Maxxis Rekon, tubeless ready, EXO casing, folding bead, 60 tpi, 27.5x2.40''
*Tyre	Size:M , ML , L , XL , XXL Maxxis Rekon, tubeless ready, EXO casing, folding bead, 60 tpi, 29x2.40''
Rim strip	Bontrager TLR
Shifter	SRAM SX Eagle, 12-speed
Rear derailleur	SRAM NX Eagle, 12-speed
*Crank	Size:XS , S , M SRAM SX Eagle, 30T steel ring, 49mm chainline, 170mm length
*Crank	Size:ML , L , XL , XXL SRAM SX Eagle, 30T steel ring, 49mm chainline, 175mm length
Bottom bracket	Truvativ Powerspline, 73 mm, threaded cartridge, 118 mm spindle
Cassette	SRAM PG-1210 Eagle, 11-50, 12-speed
Chain	SRAM SX Eagle, 12-speed
Pedal	VP-536 nylon platform
Saddle	Bontrager Verse Short, stainless steel rails
*Seatpost	Size:XS , S TranzX JD-YSI34, 100 mm travel, internal routing, 34.9 mm, 350 mm length
	Size:M TranzX JD-YSI34, 125 mm travel, internal routing, 34.9 mm, 405 mm length
	Size:ML , L TranzX JD-YSI34, 150 mm travel, internal routing, 34.9 mm, 456 mm length
	Size:XL , XXL TranzX JD-YSI34, 170 mm travel, internal routing, 34.9 mm, 500 mm length
*Handlebar	Size:XS Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width
	Size:S Bontrager alloy, 31.8 mm, 15 mm rise, 720 mm width
	Size:M , ML , L , XL , XXL Bontrager alloy, 31.8 mm, 15 mm rise, 750 mm width
Grips	Trek Line Comp, nylon lock-on
*Stem	Size:XS , S Bontrager Comp, 31.8 mm, 7-degree, 35 mm length
	Size:M , ML , L Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 50 mm length
	Size:XL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 60 mm length
	Size:XXL Bontrager Comp, 31.8 mm, Blendr compatible, 7-degree, 70 mm length
Head set	Semi-integrated, 1-1/8"
Brake	Shimano MT200 hydraulic disc
*Brake rotor	Size:XS , S , M , ML , L , XL , XXL Shimano RT26, 6-bolt, 160 mm
*Brake rotor	Size:M , ML , L , XL , XXL Shimano RT26, 6-bolt, 180 mm
Brake Set	Shimano MT200 hydraulic disc
Weight	M - 14.15 kg / 31.2 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

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.

What is your inside leg?

How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inside leg measurement. Your inside leg is very important to your final bike size so please measure carefully.

size-table
Size	Rider Height	Inseam
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 - 176 cm 5'5" - 5'9"	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"

All measurements provided in cm unless otherwise stated.

Sizing table
Frame size number	Frame size letter	Wheel size	A —Seat tube	B —Seat tube angle	Effective seat tube angle	C —Head tube length	D —Head angle	E —Effective top tube	F —Bottom bracket height	G —Bottom bracket drop	H —Chainstay length	I —Offset	J —Trail	K —Wheelbase	L —Standover	M —Frame reach	N —Frame stack
14.5"	XS	27.5"	34.0	73.8°	74.0°	9.0	66.5°	55.1	31.3	4.5	43.3	4.2	11.0	109.2	65.8	39.0	56.3
15.5"	S	27.5"	37.0	73.8°	74.0°	10.0	66.5°	57.9	31.3	4.5	43.3	4.2	11.0	112.1	69.2	41.5	57.2
17.5"	M	29"	41.9	71.9°	73.0°	9.0	69.5°	60.2	31.0	5.8	43.8	4.2	9.3	110.0	74.8	41.8	60.2
18.5"	ML	29"	44.4	71.9°	73.0°	9.0	69.5°	61.8	31.0	5.8	43.8	4.2	9.3	111.6	75.8	43.4	60.2
19.5"	L	29"	47.0	71.9°	73.0°	10.0	69.5°	63.8	31.0	5.8	43.8	4.2	9.3	113.7	75.7	45.1	61.1
21.5"	XL	29"	52.1	71.9°	73.0°	12.0	69.5°	65.9	31.0	5.8	43.8	4.2	9.3	115.9	76.9	46.6	63.0
23"	XXL	29"	55.9	71.9°	73.0°	12.0	69.5°	67.3	31.1	5.8	43.8	4.2	9.3	117.3	80.4	48.0	63.0

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Trek Marlin 4 Gen 3 Blue Sage

Trek Marlin 4 Gen 3 Blue Sage

How tall are you?

What is your inside leg?

Sizing

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