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Mountain Bike Shorts All Mountain

Sale price: $30.00 Regular price: $54.99

These All Mountain MTB shorts are very durable. Made from stretchy fabric, offering great freedom of movement. 2 flat secure pockets. Undershorts sold separately.

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Size: Select a size
Size Guide
Sale price: $30.00 Regular price: $54.99

Free shipping over $49

Final Sale: No returns or exchanges

Free returns

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8544455

Product Features

A photo of the Mountain Bike Shorts All Mountain in use

Mountain Bike Shorts All Mountain | These All Mountain shorts don't get in the way as you pedal, and hold up well to all your All Mountain rides.They're long enough to cover part of your kneepads.

These All Mountain MTB shorts are very durable. Made from stretchy fabric, offering great freedom of movement. 2 flat secure pockets. Undershorts sold separately.

Abrasion resistant

Thick, durable fabric, highly resistant to snagging while mountain biking.

Freedom of movement

Very comfortable 2-way stretch fabric. Adjustable waist size using rip-tabs.


2 flat pockets with zips to keep items safe.


Highly breathable material allows perspiration to escape.

Product Lifestyle Image Gallery

Image Gallery

Mountain Bike Shorts All Mountain,black 

Mountain Bike Shorts All Mountain,black 

Mountain Bike Shorts All Mountain,black 

Mountain Bike Shorts All Mountain,black 

Mountain Bike Shorts All Mountain,black

Questions & Answers

Product Customer Reviews

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166 Reviews
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Mountain Bike Shorts All Mountain,black
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Great shorts great price

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Value for money

Quality at its best, durable, well fitting and comfortable to wear.

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Excellent quality for the price point

To start with, as Decathlon is a completely new brand here in Australia, I would like to start this review on the subject of the overall quality of Decathlon products. I have worn and abused my previous Decathlon MTB shorts for about 15 years. These were completely worn out, torn, but with not a single defect (e.g. seams, zip) to complain about, as most of the decathlon products I have bought over the last 35 years, after 15 years, there were still going strong but needed a bit of an upgrade :) ). Therefore, I bought a pair of Rockrider 900 MTB Shorts a couple of month ago and I have been very pleased with these (the fabric is stretchy and resist abrasion very efficiently, many low speed falls and no hole or tear to be seen, I whish my skin had the same properties :) ). These shorts seem to be of an identical design, just longer which could be good on colder, rainy days or to wear with knee pads. Note that even with the longer legs, the shorts are still incredibly comfortable and flexible. My only little design critic is the hook closing system at the waist which seems to stretch the fabric and could lead to premature wear. Let's see how it goes and if these shorts can last 15 years of abuse like the previous ones! As usual, you would pay about double for a similar quality product elsewhere.

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Bike shorts

Shorts are comfortable and correct to size. Price was about right for quality shorts as cheaper ones do not last

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Excellent shorts, true fit to the sizing guide, very happy with these.

Good bike shorts.

Good in every day use, but not enough pockets for me.

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honest review :D

I like the material used but i hope it had more pockets :)

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Mountain bike shorts

Excellent product. Very comfortable and durable.

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A must apparel

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Thick fabric makes it more appropriate for cold te

Not for Sg.

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Hello Eugene!

Thank you for writing in, we appreciate your valuable feedback.

The All Mountain Bike Shorts - Black is manufactured with thick, rip resistant material to ensure reliability during unfortunate accidents in the trails. This results in the product being uncomfortable for long rides in the trails especially in Sunny Singapore.

With this in mind, we have a new redesigned All Mountain 500 shorts. It comes with ventilation holes around the shorts for better breath-ability. I invite you to come down to any one of our experience store when convenient to try the new product.

Once again, thank you for your pruchase and we hope to see you again soon! :)

Regards, Syed SYAFIQ Decathlon BEDOK (969) Oxelo/Geologic Leader (Urban) Road/MTB/Hybrid Leader (Btwin)



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Hi Ahchai,

Take you for taking the time to review our product! We are glad that you are satisfied with your purchase! :)

Thank you for shopping with us and we hope to see you again soon!

Regards, Syed SYAFIQ Decathlon BEDOK (969) Oxelo/Geologic Leader (Urban) Road/MTB/Hybrid Leader (Btwin)


Met my personal need for comfort, practical and reasonable priced

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Hi Mr Tan

Thank you for your kind review.
If you are looking for a new pair of riding shorts in the future, this model is now being replaced by this new pair.

Mountain Bike Sport Leader
Rock rider all mountain bike shorts - Black

Initially I bought two to try. The pants is easy to wash and dry. No ironing needed. The pants wear well and the waist is adjustable via some Velcro fastening bands at the wide of the pants. The material is very comfortable and stretchable. For cycling purpose stretchable material is important. It does not restrain the Cycling motion. There is also two side pocket for small items and keys. Overall I was so so satisfied that I bought a few more. In total I have five pairs.

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Hi Michael

Thank you for the kind review.
We hope you enjoy our products.

Mountain Bike Sport Leader
Love it so much, very comfortable

Suggest to have more colours on this shorts.. To have more choice for all riders. Thks

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Hello Shamrin

Thank you for taking the time to write us a review regarding our product.
In Decathlon, we believe that to get this kind of information from our users is the best way to improve what we are doing.
We are glad that you are satisfied with our products :)
Do check out more variety of our products at
We hope to be able to serve you again and see you around in Decathlon! :)


Ashley Maisarah | Sports Leader @ Decathlon Singapore Lab
ROCKRIDER Mountain Bike Shorts - Black

Fitting is comfort while cycling, even normal wear for other sports activities as well. Enough pockets (2 side) with lock which will not interrupt while driving or doing other sports activities.

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Hi Mr Velusamy

Thank you for your time in reviewing our products.

This is one of my favourite mountain biking shorts when I'm doing aggressive mountain biking because the length of this shorts is slightly longer than the Sport Trail 900 MTB Shorts. The extra length is designed to ensure that no skin is exposed when you put on your own mountain biking knee pads. The fabric of the product is made of durable and stretchable fabric for rugged mountain biking.

Mountain Bike Sport Leader
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Size Guide

Size Guide Visual

Additional Product Information


Main fabric

  • 85% Polyamide
  • 15% Spandex

Our advice: wear undershorts for added comfort!

We, at Rockrider, recommend wearing padded undershorts under your All Mountain MTB shorts. The undershorts fit discreetly under your shorts, and will keep you very comfortable as you ride. The 500 and 900 MTB men's undershorts are compatible with these MTB shorts.

Care tips

Machine wash at 86°F. Synthetics cycle. Turn the article inside out. Use a minimal amount of laundry detergent. Do not use fabric softener. Line-dry in a warm, ventilated area. Do not tumble dry. Do not dry-clean. Do not bleach. Do not place on a heater to dry.



Product testing

Our team of product designers based at the B'Twin Village in Lille is continuously working to make cycling more comfortable for our users. Our obsession is to create products that meet the specific cycling needs of our users and eliminate hindrances to a good cycling experience. We then test our products in the field, as we are convinced that only by subjecting them to real-world conditions, like the ones you experience on your bike, can we continuously improve our products.

Storage instructions

Store in a dry place.

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

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs