Join Date: Feb 2017
Location: Palma de Mallorca
The discoloration on the exhaust is from the build up of heat exactly next to the non-removable baffles.
It would seem that the US version V&H slip ons should not suffer from this problem as they have no baffles.
If the discoloration could have been avoided with the cat delete pipe, I cannot answer as i have had my V&H´s on for over 900km now.
Report on the cat xpipe soon! (Going to pick up the bike in a few hours...)