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Men's MTB Biking Shorts EXPL 500 - Black

Sale price: $49.99 Regular price:

With their built-in foam pad (designed for men), these durable shorts absorb vibrations and prevent rubbing and chafingAdvantages: glove attachment, 2 secure pockets and 2 cereal pockets.

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Size: Select a size
Sale price: $49.99 Regular price:

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8582728

Product Videos

Product Features

Men's MTB Biking Shorts EXPL 500 - Black | These mountain biking undershorts were designed for your mountain biking rides lasting 3 hours on average.

With their built-in foam pad (designed for men), these durable shorts absorb vibrations and prevent rubbing and chafingAdvantages: glove attachment, 2 secure pockets and 2 cereal pockets.

A photo of the Men's MTB Biking Shorts EXPL 500 - Black in use

Resistant to wild vegetation

The ”warp and weft” fabric withstands rubbing and snags.

Seat comfort

Ergonomic, pre-shaped, foam pad (13 mm)

Freedom of movement

Special ”relaxed” cut and elasticated fabric for riding comfortably.


Elasticated waistband with press stud

Moisture wicking

With undershorts that effectively wick away perspiration.


Take everything you need in the 4 handy pockets.


280 g in size L.

Product Lifestyle Image Gallery

Image Gallery

Men's MTB Biking Shorts EXPL 500 - Black,black 

Men's MTB Biking Shorts EXPL 500 - Black,black 

Men's MTB Biking Shorts EXPL 500 - Black,black 

Men's MTB Biking Shorts EXPL 500 - Black,black 

Men's MTB Biking Shorts EXPL 500 - Black,black

Product Customer Reviews

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Men's MTB Biking Shorts EXPL 500 - Black,black
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Can’t beat the price

The padded briefs can be separated and are really padded well. The shorts are sized well but the padded briefs are tight. I find everything at Decathlon are sized 1-2 sizes smaller than any other store in Canada. Quality is top notch. Store needs to maintain the racks better as everything is mixed up with makes it hard to find the right size

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Hello John, 

Thank you for taking the time to leave a review. If you are not satisfied with any product, you can always return or exchange it at the store. We have a 365 return policy for all the in-store purchases for members & we do a no questions asked return/exchange.

Also, do not hesitate to ask our advisors for help if you have any doubt about the product you need. We are more than happy to help and assist our customers. 

I also want to thank you for reporting the situation. First and foremost, I would like to apologize for the inconvenience. We are working every day to provide you with quality service and I see that this was not the case for you. We have raised this concern with our team & we will be adding in some extra steps to ensure that such a situation is never repeated again. We will work towards your feedback & we promise to serve you better in future. 

Thanks & Best Regards,

Decathlon Brampton Team

So far so good

Once getting the shorts home, I've noticed that the button and button hole seem a little flimsy. I hope they don't fail.

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Good but could be better, inner shorts too tight.

I bought the size that was the best compromise between the fit of the inner and out shorts. The inner are tight on my thighs and are difficult to pulll up, the outer shorts on the next size up were too loose. Decent enough quality. Pockets - has anyone who designed these ever put them on, the one pocket big enough for a phone is on the outer thigh and the zip isn't very fluid, what would have been wrong with a top zip, on a pocket higher up and a couple of front pockets for keys etc, i dont think a few more pockets, designed with more consideration would have burst the bank?

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It’s a good product go and buy it

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Sizing Issues

I got a size S, with the inner tights at 25", while the outer shorts is 31" with elastic band. the difference is simply too big.

Hi Robin,

Thanks for your feedback about the ST 500 shorts! I'm sorry that it did not provide a satisfactory experience with regards to the fit difference between the outer and inner shorts.

If you believe it to be a product defect or simply remain dissatisfied with its performance, you may return or exchange it at any of our Experience Stores.

Please rest assured that our product designers who are mountain bikers too are constantly monitoring customer reviews in order to continuously improve our products. Thanks and have a great day!


Digital Sport Leader

Cycling & Roller Sports


Really good quality but the inner is narrow on the legs. Also, the outer has weird small pockets in the leg side. Not big enough for a phone. Well padded

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Vše OK, jen pozor na velikost.

Doporučuji, skvělý materiál, jen pozor na velikost, doporučuji koupit spíše větší.

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Velmi pohodlné

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Pánské kraťasy

Příjemné, funkční, odolné.

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Chybí poutka na pásek

Chybí poutka na pásek

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Falsche Grössenangabe

Trotz Online Grössenberater speziell für diesen Artikel ist mir die Innenhose am Bund und an den Oberschenkeln viel zu eng. Sitz und Passform der Aussenhose kann ich nicht beurteilen, da ich die beiden Teile nicht wie vorgesehen mit der Schere voneinander getrennt habe.

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Zu klein

Die Größenangabe stimmte nicht mit den sonst von mir getragenen überein

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Hallo Thomas,

vielen Dank für deine Produktbewertung der Radhose kurz MTB ST 500 Herren schwarz von ROCKRIDER.

Wir bedauern, dass du Defizite bei der Größenwahl feststellen musstest. Wir arbeiten mit einem internationalen Team kontinuierlich an optimalen Größenangaben. Dein Feedback werden wir an den zuständigen Projektmanager der Marke ROCKRIDER weiterleiten, um die Auswahl weiter zu verbessern. 

Solltest du weitere Fragen haben, steht dir unser Serviceteam (service[at] jederzeit zur Verfügung.

Wir hoffen, dich in Zukunft wieder von unseren Produkten überzeugen zu können und wünschen dir einen guten Start in die neue Woche.

Mit sportlichen Grüßen



Innenhose zu klein, Überhose zu groß

Leider ist die Innenhose sehr eng, während die Überhose so grß ausfällt, dass der elastische Hüftsaum kaum zum tragen kommt. Die Überhose würde so beim hinter-den-Sattel-gehen und wieder hervor kommen hängen bleiben.

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Sehr gute Qualität - guter Preis

✅ sehr gute Qualität ✅ gute Passform ✅ Hose ist recht eng geschnitten daher eine Nummer größer kaufen ✅ guter Preis

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Additional Product Information


Main fabric: inner layer ; Yoke: 86.0% Polyester, 14.0% Elastane ; Back fabric: 63.0% Polyurethane, 6.29% Elastane, 30.71% Polyamide

Sizing information

Our model is wearing a size M top and size M bottoms.He is 1.83 meters tall.

A second skin with comfort to boot.

The pad has been designed for more regular users looking to progress in MTB. The support foam is also soft but more dense. It protects pressure zones for up to 3 hours. The foam is soft and the stretchy outer layer hugs the cyclist's body so the pad can follow their movements. Foam thickness: 13 mmFoam density: 100 KG/m3Foam firmness: 25 KPa


- At the back there's a zip-up pocket for things like keys, credit cards, etc. (14 cm x 7 cm)- There's a zip-up water-repellent pocket on the back of the thigh that's easy to access (even with one hand) and positioned to protect your phone from falls (20 cm x 12 cm).- There are two pockets along your thigh for storing cereal bars (15 cm x 4 cm each).

Keep your gloves to hand

When mountain biking, gloves are often the last thing you put on and the first thing you take off. These shorts have a buckle on the waist so you can keep hold of your gloves without having to rummage around in your pockets. You can snap your ST 100 and ST 500 gloves on them using the press stud to keep them handy at all times.

Care instructions

You can find detailed info on looking after your mountain bike clothing on our website

Product tests

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.

Product testing

Our engineers always have real riders test all our products in real conditions. These tests round out our lab tests and let us validate all our products before they hit store shelves.

Storage instructions

Store in a clean and 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.

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