The only clamps on the Invidia are for the rear tail pipes ~ this is a good thing as it allows you to get the tips positioned correctly with your rear bumper and also if you fancy a change of tip it's an easy swap or if your originals get damaged again easy swap.
Also the Invidia exhaust system has no flexi joints unlike that DC system. Hate flexi joints so much as they are so prone to damage & are a definite weak point on any exhaust system.
After researching a lot before getting my exhaust system I decided the best one for me was the Invidia Gemini exhaust system with Berks HFC's from Tarmac Sportz. Sounds great, looks ace, excellent quality & no drone.