Dr Downpipe Motorcycle Exhaust Downpipe Cleaner - 500ML Spray Bottle

Product Information

Washing up liquid does contain a ‘salt,’” he told me, “but this is the active ingredient and should not be confused with road salt; the term ‘salts’ covers a very wide range of anions that dissolve in water. Spray directly onto cold Downpipes, leave to soak in for up to 1 minute, we recommend using the cleaning pad provided to agitate the dirt. If the downpipes are heavily soiled repeat this process to optimise the result. Finally rinse clean. Keep out of reach of children. Many of the non-motorcycle-specific cleaners caused damage to polycarbonate during my immersion test. While this is an extreme test, it does highlight that while an all-purpose-cleaner might be effective for its market, it might not be 100% safe for use on motorcycle screens, headlights etc. For that reason, use caution. Muc-Off and R&G’s aerosol degreasers stood out as being effective with minimal effort, and are great degreasers, though they do work out rather expensive so they’re best on the smaller, most grotty areas –I use these just on the greasy metal parts of the bike. R&G has a lower RRP, but my can’s nozzle leaked (as did both of the bottles of R&G’s liquid cleaners, so keep them upright). Muc-Off also smells the better of the two. Introducing our all new DrDownpipe premium formulation chain lube. This has been brought to market after extensive testing,trialing and analysis, to establish a premium product to market. Our premium chain lube follows on from our number one selling motorcycle downpipe cleaner. An aerosol spray lubricant with excellent penetrating properties specially formulated for use on all chains. It leaves a fine clear film of P.T.F.E., eliminating the need for cleaning of chains prior to safety inspection.

There’s nothing in a washing-up liquid that will exacerbate corrosion – there’s no sodium chloride salt to worry about. None of the cleaners I test here will instantly ruin your bike, but it’s important to understand that some have the potential to cause harm, which is why we have the selection of recommended products above. As reactions between the materials and chemicals were, in some cases, immediately visible, I believe it’s worth considering. I will say overall the result on the wife bike was ok, mine however would go with poor and little change, both our system as SS so unsure why one was better than the other. Maybe someone local to me would like to do a test with the spare remainder and get a 3rd review out of the bottle.Apply your cleaner, then agitate with a Vikan brush. Keep the brush rinsed clean. Consider using a noodle mitt or microfibre towel to clean the bodywork, as long as there’s no grit present.

Rinse the bike again then dry it with a microfibre drying towel. A dryer (I have a Brühl) is great for getting moisture out of the nooks and crannies of the engine, radiator and switchgear (blow across the controls to draw the water out, rather than blast it in). You could use a dog dryer, though these don’t tend to have the protection circuits that make them safer to use outside near garden hoses.

I haven’t tested any exhaust cleaners, but Dr Downpipe is one example of a product designed for the job – it’s milder, and takes more agitation, but carries fewer risks.