ROCKBROSBike Fender Adjustable Bicycle Fenders for 26"/27.5"/29" Mountain Bike Universal Front Rear Mud Guards for MTB

Works great! Stays right in place after it's tightened up properly, Looks nice, and my tookis stays dry going over puddles.

Looks pretty darn good on the bike. Easy enough to install. Have to tighten the heck out of those screws to keep from re-adjusting it after a ride, but certainly functional and I like the look!

A lot to say here...mostly good and debunking others negative feedback.For an XS bike I felt it looked much better with the side tubes cut down about 2" per side so it sat closer to the tire. This was super easy using a small hand held tubing cutter from any box store that sells home stuff.There was an engineer that went on about how they scrwed up and made a mold and now it's to late to fix. Kind sir, just take one mounting bracket side, doesnt matter which side and rotate the base 180 degrees then flip the tube 180 degrees and now you have both brackets symetrical.The only thing that I found as a flaw with the kit was the massive zip ties, omg they are huge. The larger the zip tie the less likely it is to cinch with maximum coverage, there will be large gaps...I used much smaller zip ties and it worked great, I was able to cinch them up much tighter.Solid item, worth a 5 star? Is anything worth 5 stars? I mean it is just a tad bit flimsy but it does look good and it does it's job well. It's built with really good materials and it's very easy to adjust it by either rotating the position of the brakets on the tubes, raising or lowering the side struts and all 4 nut and screw joints.

The fenders themselves are fine and I like the adjustments available to set it up. However, the tie straps are completely inadequate. I ended up going to a hardware store and buying metal straps as a workaround. Now they are fine and hold in place fine even with tough single track. One note for those using a bike carrier, take the fenders off for travel, they will catch the wind and flutter like crazy.

Nice quality I love it

As a mountain biker who frequently rides in wet and muddy conditions, I was excited to try this bike fender to keep spray off my face and bike. While the concept is solid and it performs adequately when it works, the fender’s flimsy construction and lack of stability make it a frustrating addition to my setup. For the price, I expected better durability and functionality.Weak and Flimsy ConstructionThe fender feels incredibly flimsy right out of the box. The material—likely a thin aluminum pole—lacks the rigidity needed for the rigors of mountain biking. Even on moderate trails with light bumps, the fender wobbles and flexes excessively, making it feel like it could snap at any moment. After just a few rides, I noticed stress marks forming near the mounting points, suggesting it won’t last long under regular use. For a product meant to handle mud, rocks, and rough terrain, this lack of durability is a major disappointment.Constant Movement and Alignment IssuesOne of the most aggravating issues is the fender’s inability to stay in place. No matter how carefully I adjusted it, I could never get it centered properly. The mounting system, which relies on basic screws and nuts, is too loose and allows the fender to shift side to side during rides. On rougher trails with roots or jumps, it moves so much that it becomes misaligned, rubbing against the tire or failing to cover the right area. I spent more time fiddling with it than actually enjoying its benefits, which defeats the purpose of a quick-install fender.Does the Job (When It Works)To its credit, when the fender is momentarily aligned and not wobbling, it does the job of keeping mud and water off my face and fork. It’s effective at blocking spray on wet trails, and the design covers enough of the tire to protect both me and the bike’s components. The idea behind it—a lightweight, easy-to-install fender—is a good one, and it could be great with better execution.Not Durable or Strong EnoughThe core issue is that the fender’s lack of strength and durability undermines its functionality. It’s not built to withstand the vibrations and impacts of mountain biking, even on moderate trails. I’ve used other fenders (like those from Mudhugger or SKS) that stay firmly in place and handle abuse without issue, but this one feels like a budget knockoff in comparison. The flimsy material and weak mounting system make it unreliable for anything beyond casual, smooth rides.Overall ExperienceThis MTB fender has a good idea at its core—keeping mud and water at bay—but its weak, flimsy construction and constant movement make it more trouble than it’s worth. The inability to keep it centered and its lack of durability under normal trail conditions are dealbreakers for serious riders. While it can work temporarily to block spray, the hassle of constant adjustments and fear of it breaking outweigh the benefits. I’d recommend investing in a more robust fender from a reputable brand for better stability and longevity. This one just doesn’t cut it for real mountain biking.

Looks great on my Hybrid MB. I like that i can adjust cover so it fit my skinnies and fatty tires. Don't know yet if I'll eat street water yet. Post a another day with that. They seem strong and easily adjustable. .

Easy to fit, great adjustability, seems to be built well.