BRAE Cycling Mudflaps
Rear Mudguard Flaps for Cyclists — Made in the UK
Nobody wants to be the rider who soaks their mates. Brae Cycling's mudguard flaps attach to your rear mudguard and extend its length, stopping spray and road muck from hitting the riders behind you — essential kit for group rides and commuting in British weather.
Designed in partnership with RAW Mudflaps UK and made from durable polypropylene, our mudflaps are built to last through season after season of wet riding. Available in two widths to fit standard (35–45mm) and wide (45–55mm) mudguards, with all fittings and instructions included.
- Extends rear mudguard for superior spray protection
- Available in standard (35–45mm) and wide (45–55mm) sizes
- Durable polypropylene — made in the UK
- 2-bolt attachment with all fittings included
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Brae Standard Rear Mudguard Flap - 35-45mm
Vendor:Brae CyclingSale price £8.99 GBP Regular priceRegular price £8.99 GBPUnit price / per -
Brae Wide Rear Mudguard Flap - 45-55mm
Vendor:Brae Cycling5.0 / 5.0
(1) 1 total reviews
Sale price £9.50 GBP Regular priceRegular price £9.50 GBPUnit price / per
Stop the Spray — Ride Considerately in Any Weather
At Brae Cycling, we believe good kit makes you a better riding companion. Our rear mudguard flaps are a simple, effective upgrade that keeps the riders behind you dry and clean — whether you're on a winter club run, a commute, or a loaded touring ride in the rain.
Designed in partnership with RAW Mudflaps UK and manufactured in Britain, each flap attaches to your existing rear mudguard using a 2-bolt system. All fittings and instructions are included, so installation is straightforward — though it does require drilling at least one hole in your mudguard.
Key Features of Brae Mudguard Flaps
- Superior Spray Protection: Extends your rear mudguard to prevent road spray and muck from reaching riders behind you.
- Two Width Options: Standard (35–45mm) and Wide (45–55mm) versions to suit most mudguard setups.
- Durable Polypropylene: Built to withstand regular use in wet, muddy British riding conditions without cracking or warping.
- Made in the UK: Designed for Brae Cycling in partnership with RAW Mudflaps UK.
- Easy Installation: Comes with all mounting bolts, fittings, and an installation guide.
Why Choose Brae Cycling?
Brae Cycling products are designed by cyclists, for cyclists. Our mudguard flaps are a small addition that makes a big difference on group rides — and they're built with the same attention to quality and durability as our full bag range. If you ride in the UK, you need one.
Our mudflaps collection includes:
- Brae Standard Rear Mudguard Flap — fits 35–45mm mudguards
- Brae Wide Rear Mudguard Flap — fits 45–55mm mudguards
Upgrade Your Winter Cycling Setup
Browse Brae Cycling's mudguard flaps and make your next wet ride a cleaner, more considerate experience for everyone in the group.
FAQs
Which size mudguard flap do I need?
Measure the width of your rear mudguard. If it's between 35mm and 45mm, choose the Standard flap. If it's between 45mm and 55mm, choose the Wide version.
Do I need to drill my mudguard to fit the flap?
Yes — installation requires drilling at least one hole in your rear mudguard. Full instructions and all fittings are included in the box.
Are the mudflaps suitable for year-round use?
Absolutely. While they're especially useful in winter, the durable polypropylene construction means they'll handle wet and muddy conditions in any season without degrading.
Can I use these on a touring or commuting bike?
Yes — they're ideal for any bike fitted with a rear mudguard, including commuters, tourers, and winter training bikes.
Let customers speak for us
from 158 reviewsI couldn’t be more happy with these bags.
I’m so glad I bought these over the market leader (you know the one that starts with ‘O’)
I’ve had those before and I would say these are better. They are better constructed with stronger material and a simpler design. They fitted snugly onto my rack with minimal adjustment.
I haven’t used them in anger yet but I can’t see that there would be any issue with such well made bags.
perfect for putting your single speed tool and micro pump and tools in.... this longer bag is super useful. just be aware it uses a lot of seat post, so you may need to get creative if you need to use a rear light.
fitted on downtube using cage mounts - perfect sized dry bag for jetboil flash + larger gas.
Review after first use:
I was looking for some decent dry bags for my front fork cages, and these are a great size even for my size S frame.
The 5l version fit my tent or sleep system inside, so I can keep wet stuff away from dry. Kept my sleeping stuff clean and dry after a long wet day in Scotland on my latest trip.
I'm really happy with these panniers. They fit a lot in them and are very waterproof. After about 6 hours cycling in torrential rain everything was still dry.
The material is quite thick, which seems good for durability but does make them quite heavy and chunky. For my purposes that's not an issue though.
If I were to suggest any improvements - the clip that attaches to the side of the rack at the bottom sometimes gets stuck and can be quite difficult to undo. It feels like it would break quite easily too, although it hasn't actually broken so I could be wrong. I'd also like it if there was a way to lock the bags to the rack, so that I can leave them on the bike when it's parked without risking them being stolen.
I think these panniers are a great buy for the price. I've had several other cyclists ask me about them too.
Awesome little stem bag.
Put a 550ml bottle plus snacks in it for a 60 mile gravel and road bike ride. Added , some tape round my fork to protect from any rubbing from the stem bag strapping , so all good, would recommend.
Well made and detailed
Highly recommend Brae for their quality products and outstanding service.Mine was a small order too
Perfect replacement panier spaces to replace missing ones.
Very good quality, easy to mount, kept everything dry
I’ve been looking for a bag that would fit my Brompton G Line rack, and the Wynd Bag is absolutely perfect.
It fits the rack brilliantly and can be removed in seconds, so you can simply throw it over your shoulder before folding the bike at the train station. It’s just as easy when you arrive and unfold the bike.
The bag itself is excellent quality and feels really well made. It’s exactly what I was looking for and makes using the G Line with the train so much easier. Highly recommended!
Great pannier bags. Just tried them for a Tesco shop and they held loads of shopping.
Considering it looks small surprising how spaces its to hold all my essential bike equipment one off the better handle bar bags ave had.
I was after small waterproof luggage options to spread the weight of my gear on my motorcycle. These are perfect and work really well on motorcycles to attach to editing luggage or frames.
Very well made. Fit nicely on the forks and my tent and mat fit well.

