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Rockrider Flash Mountain Bike Rear Mudguard
This compact, lightweight mudguard protects your lower back from tire spray coming off the rear wheel. It is detachable, and easily attached or removed.
Free shipping over $49
Final Sale: No returns or exchanges
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Mess-free
It protects the buttocks and lower back from tire spray.
Easy assembly/dismantling
Attaches or detaches under the saddle in one step.
Compatibility
Handy: it fits practically all mountain bike saddles.
Compact design
It can be carried anywhere easily, in a bag or a pocket.
Questions & Answers
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Product Customer Reviews

Excellent product at 1/3 of the price you’d pay at a bike shop.
It works and is very inexpensive! It keeps much of the road slush and muck from reaching my seat, butt and lower back.
Thank Glen for your feedback
Sportignly
Kaushal
I cut it, drilled holes in it and attached it to the back of my rear rack because my fender wasn't long enough to protect me from road dirt being kicked up.
Great price
If it were not for the price id send it back, guard is not long enough and does not serve its purpose :(
Works a treat. 👍
Think a large amount of this mud guard relies on the wheel to seat angle. My seat is quite high making the guard next to useless.
It does the job at very good price.
Excellent product
So far so good, both boys very happy with their bikes and the protection this gives
Does the job but although I’ve installed it according Decathlon’s instructions on a Decathlon bike, it keeps turning sideways which doesn’t look cool. But it has saved my backside in the recent rains though.
Value for money
Very good
Make sure you get the wider version if you have a Mountain Bike
Bought as a package while purchasing a MTB. Needed something for a full sus MTB, does the job
Additional Product Information
Composition
Main fabric
- 100% Polypropylene
Keep your buttocks and back protected from dirt!
These ultra-compact and ultra-lightweight mudguards can be taken everywhere and 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.
Origin
Imported
Storage instructions
Store flat.
Care instructions
Can be washed with 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
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs

Rockrider Flash Mountain Bike Rear Mudguard
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
