Motorcycle Detailing: How to Safely Clean Your Bike

Why should you never pressure-wash a motorcycle?

A pressure washer pushes water past seals that were designed to shed rain, not to survive 1,500 PSI from six inches away. On a car, a bad pressure-wash means a wet floor mat. On a bike, it means water sitting inside a wheel bearing or a connector you cannot see until something starts to fail.

Every part of a motorcycle that spins or carries current is exposed.

• Wheel and steering-head bearings: water gets in, grease washes out, and the bearing runs dry until it notches.
• Chain O-rings and X-rings: high pressure flushes the factory grease out from behind the seals, and no amount of chain lube puts it back.
• Fork and shock seals: a direct jet drives grit past the wiper and scores the tube.
• Electrics: the ignition switch, ECU plugs, coil boots and stator connectors all sit under the tank or behind the side covers with nothing over them.
• Gauges and switchgear: bar controls and instrument housings are splash-rated, not jet-rated.

What is the safest way to wash a bike?

Most motorcycles never need a running hose. A rinseless wash gets a whole bike clean with roughly two gallons of water and a stack of microfiber towels, which is why it works on street parking, in a shared garage, and anywhere there is no drain.

Let the bike cool completely first. Washing a hot engine flashes water to steam, streaks the clear coat and can stain plated headers.

Waterless spray is for a bike that is dusty, not one caked in road grime. Dragging a towel across grit is exactly how swirl marks end up in a tank.

• Rinseless: one capful of Optimum No Rinse or Griot's Rinse and Wax in two gallons, then one clean folded microfiber panel per section.
• Heavy grime: pre-soak with a pH-neutral bike cleaner such as Muc-Off Nano Tech or S100 and let it dwell two to three minutes before you touch anything.
• Bug strikes on the fairing and fork lowers: lay a soaked microfiber over them and let the cleaner soften the shells instead of scrubbing.
• Work top down. Tank and tail first, wheels and lower engine last, with separate towels and buckets for anything below the footpegs.
• Bag a suede or perforated seat, and keep degreaser off every painted and plated surface.

How do you clean and re-lube a motorcycle chain?

The chain is the only genuinely dirty part of most bikes, and it is the part riders get wrong most often. Clean it gently, dry it fully, and lube it warm.

Skip gasoline, brake cleaner and strong caustic degreasers. They attack the rubber O-rings and turn a good chain into a short-lived one, and the failure shows up as tight spots months later.

• Put the bike on a rear paddock stand or center stand so the wheel spins freely.
• Spray an O-ring-safe cleaner such as Muc-Off Drivetrain Cleaner or Motul Chain Clean onto the chain itself, not across the wheel.
• Work it with a three-sided grunge brush or a soft nylon brush. Never a wire brush, never a screwdriver.
• Wipe the chain dry with a rag held in a gloved hand while you rotate the wheel by hand, not with the engine running.
• Lube while the chain is warm from a short ride, one thin pass along the inside of the lower run, then let it set 20 to 30 minutes before you ride.

How do you clean spoked wheels and engine fins?

Wheels, spokes and engine cases are where the hours actually go on a bike. There is no shortcut other than small brushes and patience.

Use a pH-neutral wheel cleaner. Acidic cleaners eat anodized rims, polished lips and raw aluminum, and the damage shows up as a cloudy grey haze that no polish will bring back.

• Spokes: a soft detail brush down each spoke and a bottle-style brush at the nipples. Boar's-hair bristles are safe on chrome.
• Fins and cases: a one-inch soft brush plus foam swabs, then a damp rinseless towel to lift the dirt out rather than push it deeper.
• Rear rim and swingarm: pre-soak chain fling with an all-purpose cleaner around 10:1 and let it dwell instead of scrubbing hard.
• Blow or wick water out of every corner as you go so nothing dries in place while you finish the other side.

How do you polish chrome and bare aluminum?

Chrome and raw aluminum are the two finishes on a bike that need actual polish rather than wax. Both oxidize, and near the coast both do it quickly.

Chrome takes a mild metal polish on a folded microfiber. Aluminum takes a dedicated aluminum polish and more passes. Once either one is bright, seal it, because polish alone leaves the metal bare.

Washing, chain care and plastic cleaning are all fine to do yourself. Machine polishing a tank, correcting paint before a coating, and applying a warrantied ceramic are where a pro pays for itself, because bike panels are small, curved and full of edges where it is easy to burn through clear coat.

How do you clean plastics and the windscreen without hazing them?

Never put household glass cleaner on a motorcycle windscreen. Ammonia crazes polycarbonate and acrylic into a spiderweb of fine cracks that shows up in oncoming headlights and cannot be reversed.

Use a plastic-specific cleaner and only plush microfiber, folded, with almost no pressure. Paper towels and shop rags are abrasive enough to haze a screen in a single wipe.

If a screen is already lightly scratched, Novus 2 worked by hand will clear the top layer. Deep gouges mean a new screen, since polishing thin plastic aggressively enough to remove them distorts your view through it.

• Textured plastics: soft brush plus a diluted interior cleaner, then a matte protectant so nothing ends up slippery under your knees.
• Gauges: mist the towel, never the cluster, so nothing wicks into the housing.
• Faded black plastic responds well to a trim restorer, but degrease it first or the dressing will not hold.

Is ceramic coating worth it on a motorcycle?

Ceramic coating makes more sense on a bike than on a car in one specific way: it makes the parts you can barely reach easy to clean. Coated wheels, swingarms, engine covers and fairings shed chain fling, brake dust and bug guts with a wipe instead of a brush.

A motorcycle also has far less surface area than a car, so a coating covers most of the machine. What it will not do is stop rock chips or reverse pitting that has already started in old chrome, and the hottest section of an exhaust header is better polished and sealed than coated.

Coat after correction, not before. A coating locks in whatever the paint looks like on the day it goes on, which is why a one-step correction is included with every System X ceramic tier we install.

Why does San Francisco air make drying the most important step?

Fog and salt air are a corrosion problem, not a cosmetic one. Water left in a bolt head, a spoke nipple or a chain link overnight out toward Ocean Beach or the Sunset starts surface rust within days, and hard water from a city hose dries into mineral spots that etch clear coat once the sun hits them.

Drying a bike is really three jobs: blow, wipe, ride.

This is also why we bring the work to the bike. Golden Bay is mobile, we arrive with our own water and power, and we detail in your driveway, garage or at the curb across San Francisco, the Peninsula down to San Mateo and Marin through San Rafael. Your motorcycle never has to be ridden dirty or cold-started just to get cleaned, and there is no travel fee in the standard area. Bikes are quoted individually, so send a few photos and we will price yours.

• Blow water out of the switchgear, spokes, chain, fasteners and radiator fins with a blower or low-pressure air.
• Wipe with a plush drying towel, then a second dry towel for panel seams and under the tank.
• Ride five to ten minutes to evaporate whatever is still trapped, then lube the chain while it is warm.
• Finish with a spray sealant on painted and chrome surfaces so the marine layer has something to sit on besides bare metal.

Frequently Asked Questions