Is there a way to remove rust from front exhaust pipe?

[Motocrossguy17]

Hi guys im looking to see if there is a inexpensive way of removing rust from a chrome exhaust pipe (front part not silencer) its quite badly rusted (bike has been lying for 13 years)

just wondering if there is a way of removing it without having to buy any special stuff

 

[Jimmer]

Crumpled up aluminum foil with soapy water.

 

[Larry's Shee]

Coke and aluminium foil, lots of elbow grease