Mine have been dry fitted since I bought the bike, just seen on the pipe manufacturers website they are supposed to be fitted with gaskets so I ordered some. The pipes do fit very snug on the headers although there are some small gas leaks there certainly isnt enough space for the 4mm thick gaskets!

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Now have a 2017 S1000XR Sport SE

2006 XT660X - Cat D write off due to someone pulling out on me - Pipewerx carbon fibre exhausts - Snorkel removed and airbox drilled - DNA stage 1 + 2 air filters - Kevs fuel controller mod - Scottoiler V system - Oxford heated grips - HEL braided brake hoses - Wilbers 540 rear shock - Brembo brake pads - AFAM chain and sprockets - Michelin Pilot Street Radial's - Denali DX Xtreme dual intensity spotlights