Storing Your Motorcycle for Winter: Parts and Prep Guide

Winter storage done properly means a bike that starts first time in spring, components that haven't degraded in storage, and no nasty surprises when you pull the cover off. This guide covers the key parts and preparation steps — including some less obvious considerations for aftermarket components.

Exhaust: Protecting Against Winter Moisture

This is the most commonly overlooked aspect of winter storage for bikes with aftermarket exhausts. Moisture accumulates inside exhaust systems during storage, particularly in the UK's damp winter environment. Steel systems can develop surface rust inside the headers. Carbon end cans are not immune to moisture either — the carbon weave can delaminate if repeatedly wet and frozen.

Before storage:

• Run the engine until fully warm to evaporate any moisture from the system
• While still slightly warm, spray WD-40 or a dedicated exhaust inhibitor into the end can entrance — this coats the internal surfaces and displaces moisture
• Plug the exhaust outlet with a rag or dedicated bung to prevent moisture ingress and stop small animals nesting (this happens more than you'd think)
• For carbon end cans, wipe down the exterior and apply a heat-resistant wax to protect the lacquer coat

Seat Cover: Storage Considerations

UK garages are often damp — particularly detached garages and outbuildings. Alcantara seat covers can absorb moisture from a consistently damp environment over a long winter storage period, which accelerates degradation and can cause the material to feel flat and lifeless when you return in spring.

If your garage is damp:

• Remove the seat and store it inside the house for winter
• Alternatively, use a fitted seat cover or breathable bike cover that prevents moisture settling on the seat surface
• A silica gel pack under the bike cover helps absorb ambient moisture in a small enclosed space

Vinyl seat covers are more resistant to damp storage — they don't absorb moisture in the same way. If you're in a consistently damp storage environment and choosing between materials, vinyl longevity advantage is worth considering.

Crash Protection: Inspection Before Storage

Winter storage is the ideal time to inspect crash protection components — you have the bike stationary with time to check properly, and any replacements can be ordered in time for spring riding.

What to check:

• Frame slider pucks: Check for wear or flat spots from any slides during the season. Worn pucks should be replaced — they're inexpensive and doing the job correctly is the point.
• Mounting bolts: Slider bolts should be checked for torque and corrosion. Apply copper grease to threads during reassembly to prevent seizing over winter.
• Engine case cover condition: If a cover was scratched or partially damaged during the season, now is the time to replace it before spring.

Battery: The Most Common Spring Problem

A flat battery is the most common reason bikes don't start in spring. Li-Ion batteries (fitted to some modern bikes) are particularly sensitive to being left fully discharged — this can permanently damage the cell. Lead-acid batteries will sulphate if left uncharged over winter.

Use a quality trickle charger (CTEK is the standard recommendation) throughout winter storage. Connect it every few weeks at minimum, or leave it connected to a smart charger that cycles automatically. This single step prevents the majority of spring starting issues.

Brake Fluid

Brake fluid is hygroscopic — it absorbs moisture from the air over time. The boiling point decreases as moisture content increases, creating a fading risk on track. The standard recommendation is to replace brake fluid every two years.

If your fluid is overdue, winter storage is the ideal time to replace it — you have plenty of time, and the bike will be ready to use from day one in spring.

Anti-Corrosion Protection

Exposed aluminium components — engine casings, swing arm, frame joints — benefit from an anti-corrosion treatment before winter storage. ACF-50 or Scottoiler FS365 are the standard choices for UK motorcycles. Applied before storage, they provide months of protection against the salt and moisture that accumulate even on stored bikes in damp UK conditions.

Spring Checklist

Before the first ride of spring: remove exhaust bung, check tyre pressures and condition, check brake fluid level and feel, inspect the drive chain (stretched chains can cause issues after extended storage), and do one short road check before any enthusiastic riding.

Shop Winter Prep Parts at Euro Motards

We stock exhaust end can bungs, replacement frame slider pucks, and maintenance consumables. We ship worldwide. Browse our exhaust range, crash protection, or seating.