As end-cans go, you don’t get much simpler than this. The GP style titanium outer sleeve contains absolutely no baffling or sound-reducing equipment at all – it’s just a straight-through titanium tube. Fortunately it slips onto the back of the baffled standard collector box on 2006 and 2007 R6s, so noise won’t increase as much as you might think. There’s a minimal power gain/weight loss to be had too, and it bolts on to standard mounting points. It costs £299.