That is not normal, the pipes deteriorate from the inside so it will look fine on the outside.

Do not use anything other than the correct pipe as they are designed differently to "most" automotive pipes...  Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand Sold
2002 L322 Vogue 4.4 V8 Epson Green (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Well strange Land Rover don't list this part anymore told me to get a piece from a motor store

Well Land Rover in there infinite wisdom has decided to sell the whole pipe as one piece
The price for there wisdom 130 pounds
How do they come to these decisions when you can clearly see the pipeis designed to be used in two parts