This is the ultimate in Remus performance for the 2011 & Later KTM 450 SX-F. Dual Titanium ROXX Silencers matted to their Titanium Race Headers. We have had nothing but great experiences with Remus. Especially with their new ROXX Line of exhausts. We've installed them, tuned with them and most importantly ridden with them. They are well made and do exactly what Remus designed them to do and that is perform. Their 2011 & Later KTM 450 SX-F Titanium Full Exhaust System is nothing but perfection. With a price tag like this you would expect nothing else.