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Guides ·24 December 2025 · 8 min read

Mudguards and the winter bike

The Moveee team

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There is a version of winter riding that is cold, wet and grim, and a version that is cold, dry-footed and rather enjoyable. The gap between them is mostly equipment, and most of that equipment is inexpensive.

Mudguards, and why this is not a style question

A wheel throws water forwards and upwards in an arc. Without a front guard, that water goes onto your feet and shins; without a rear guard, it goes up your back and — if you are in company — directly into the face of the rider behind.

Two consequences follow. First, wet feet at 3°C are what ends winter rides early, and a front mudguard with a proper mudflap is the single most effective fix available. Second, the social one: in plenty of clubs, a bike without guards is not welcome on a winter group ride, and the rule exists because the alternative is genuinely unpleasant for everyone else.

Full-length guards beat clip-on ones by a wide margin. Clip-ons keep a bit of water off you and almost none off the rider behind, which is the half that gets you invited back.

What to change, and how much it matters

Full-length mudguards Essential

Keeps a rooster tail of cold gritty water off your feet, your back and — crucially — the rider behind you. A long mudflap on the front guard is what protects your own feet; a long one on the rear is what makes you welcome on a group ride.

Wider, tougher tyres Essential

Winter roads carry flints, grit and potholes filled with water. A more robust 30–32 mm tyre punctures less and grips better in the wet, at a cost in speed nobody should care about in January.

Lights, front and rear Essential

Not just for the dark. Winter afternoons are gloomy enough that a rear light in daylight is genuinely useful — see our article on riding at night.

Durable chain lube Recommended

Wet lube through the winter, reapplied often. This is the season where dry lube and wax both struggle.

An older or cheaper bike Optional

A winter bike is not about the riding — it is about which frame and which drivetrain get destroyed by salt and grit. If you have two bikes, ride the one you mind less about.

Cheap deep pedals or flat-friendly shoes Optional

Winter destroys cleats and pedal bearings. Some riders keep a scruffy set for the season.

A cyclist riding on an open road
The difference between a good winter and a miserable one is mostly about feet.

Fitting guards to a bike that was not designed for them

Modern race frames frequently have no mudguard eyelets and limited clearance, which is how the whole category of compromise solutions came about. Realistically:

  • If your frame has eyelets and clearance: full-length guards, fitted properly, with mudflaps added. Best outcome by far.
  • If it has clearance but no eyelets: guards that mount with straps or brackets. Less elegant, nearly as effective.
  • If it has neither: a long clip-on rear guard and an ass-saver-style seat guard is the realistic ceiling. Accept it will not protect anyone behind you, and say so on a group ride.
  • Check clearance with the tyre you will actually use. A guard that clears a 28 mm tyre in the shop can jam with a 32 mm and a load of wet grit. Anything rubbing in winter will rub worse in slush.

The maintenance side

Salt and grit are far harder on a bike than mileage is. A winter bike needs the drivetrain cleaned and relubed much more often than a summer one, and the components that fail are usually bearings — bottom bracket, headset, hubs — because water gets in and stays there.

A rinse and a wipe after every wet ride does more for a bike's lifespan than any amount of careful riding. Washing your bike properly covers doing it quickly and without wrecking your brakes, and chain waxing vs lube covers why wet lube is the right call for these months specifically.

The rest of the winter problem

Equipment is one of three things that decide whether you ride through the winter. The other two are clothing — cycling in cold weather — and accepting that some evenings the right answer is indoors.

On those evenings, Moveee Indoor runs your own routes in a browser tab, which at least means the road on the screen is one you will recognise in April. And there is a maintenance bonus: every hour on the trainer is an hour of salt your drivetrain does not have to survive.

Sources 4

Where this article summarises a study, the study itself is linked — not a write-up of it.

  1. 1 Castellani JW, Young AJ Human physiological responses to cold exposure: Acute responses and acclimatization to prolonged exposure · Autonomic Neuroscience · 2016
  2. 2 Madsen JCO, Andersen T, Lahrmann HS Safety effects of permanent running lights for bicycles: A controlled experiment · Accident Analysis & Prevention · 2013
  3. 3 The Highway Code — Rules for cyclists (59 to 82) · GOV.UK · 2022
  4. 4 Spicer JB, Richardson CJK, Ehrlich MJ, Bernstein JR, Fukuda M, Terada M Effects of Frictional Loss on Bicycle Chain Drive Efficiency · Journal of Mechanical Design · 2001
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