Honda CBR1000RR Fireblade 2021 Manual page 216

Caring for Your Vehicle
Exhaust Pipe and Muffler
The exhaust pipe and muffler are titanium and
stainless steel but may become stained by mud
or dust.
The part in the following illustration is coated to
prevent oxidation.
To avoid damaging the coating, do not use
aggressive chemical cleaners or compounds.
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Coated area
Coated area
To remove mud or dust, use a wet sponge and
a mild detergent, then rinse well with clean
water. Dry with chamois or a soft towel.
Use a soft cloth sprayed with a multi-purpose
spray lubricant and wipe clean.
Uncoated area
To remove mud or dust, use a wet sponge and
a liquid kitchen abrasive, then rinse well with
clean water. Dry with chamois or a soft towel.
If necessary, remove heat stains by using a
commercially available fine texture compound.
Then rinse by the same manner as removing
mud or dust.
NOTICE
Even though the exhaust is made of titanium and
stainless steel, it can become stained. Remove all
marks and blemishes as soon as they are noticed.