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Mountain Biking Rear Mudguard 700

Sale price: $12.99 Regular price:
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Sale price: $12.99 Regular price:

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Model: 8363747

Product Features

A photo of the Mountain Biking Rear Mudguard 700 in use

Mountain Biking Rear Mudguard 700 is designed for protecting you from splashes when mountain biking.

This mudguard for the rear wheel can be directly attached to the seat post in one step, without tools. Its articulated arm allows it to be fitted to any type of bike.


Protects the buttocks and lower back from tire spray.

Easy assembly/dismantling

Tool-free attachment to a seat post in a single step.


Fits seat posts with a 24 to 36 mm diameter & wheels from 26" to 29".


Withstands the vibrations of mountain biking.


Total weight: 5.6 oz.

Product Customer Reviews

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307 Reviews
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Mountain Biking Rear Mudguard 700,black
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Really easy to fit

Bought for my son's bike -fitted in a couple of minutes

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700 MTB fender

Quality product-does the job keeping the mud off

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Basic but efficient

Does the job, time will tell on quality but can’t complain on price.

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Very Bad product

From first use its not fit on rod. The mechanism is very poor and from first day it’s not working

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Hello Rakeh, 

Thank you for taking the time to give us your review. Please ensure there is no grease on the seat post where the mudguard is installed. This is the reason in most cases for the mudguard to loosen up. If there is a problem with the clamp, try another piece from a Decathlon store closest to you. If you are still not happy with the product we can find other solutions for you at the store.  I remain available for more questions.  


Not bad

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rear mudguard

easy to fit does the job and looks stylish

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700 MTB rear mudguard by B’TWIN

Excellent value for money. Extremely easy to fit and it holds in position very well. Wide and long enough to cover the 27.5” wheel. I cannot comment on fragility of the product as so far I haven’t been involved in any falls but it feels strong and well made

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Great stuff and self installable

It is a very good quality product. Just ensure that you do not apply too much torque while tightening the clamp,else, it may break.

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Good procuct

Nice accessories for bike

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Good product

Its worth buying this

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Front and rear mud guards

Excellent quality and very reasonably priced. After buyin the Xl rockrider 340 which is an excellent quality bike I also just bought BTWIN 120 speedometer as I am doing a sponsored slim for cancer research I wonted to keep track on my mileage speed and time but sadly I cannot get this to work the instructions are not very help not much in English please could you help me with problem yours hopefully john

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my favourite cycle company BTWIN

Quality is good .. but not sufficient for a 29er .

straps in place .. looks good .. but still comes loose when someone accidently hits the locking system, also the ack gets spratyed with mud on a 29er .. falls a bit short for 29"tyres

Mudguard fixing not practical

Fixing mechanism is based on a wraparound notched strap and sprung ratchet that allows it to be fixed to any diameter tubing. Unfortunately if you have a narrow saddle then the riders leg/thigh can catch the ratchet clip making it come loose therefore item was returned for refund.

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Thank you for your feedback.
I'm glad that you were able to get a refund.
Peter Lazarus, National Cycling Manager, DECATHLON
700 mountain bike rear mudguard

Simple to fit, does the job effectively and great value for money

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Additional Product Information



  • 100% Polyamide 6. 6


  • 100% Polyamide 6. 6


  • 100% Stainless steel

Keep your buttocks and back protected from dirt!

This mudguard will protect your buttocks and back from rain and mud splashes. But be aware that you will always get dirty when mountain biking in wet and muddy conditions. You can never escape it entirely.



Care instructions

Wash with soap and water.

Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual