HP Corse - Hydroform Short R for Diavel 1260
It is hard to imagine anything being able to improve on the stock style, sound and performance of the 159 hp DVT 1262 Testastretta engine, but the Bologna based exhaust manufacturer brings over 20 years of material modelling and applied fluid dynamics R&D experience to the party, and the result is the stacked double short muffler of the Hydroform Short R with removable mesh and stylish sloping back-cut outlet - "the most evocative of HP Corse racing products, characterised by exquisitely clean lines and breathtaking curves".
The most incredible cut and weld-free shapes and variable diameters of the Short R can only be achieved by hydroforming, and the removable mesh allows the dB killer to be removed. The unapproved (racing) version, built specifically for the Diavel 1260, is a semi-complete 2-into-2 system that keeps the original primary collectors and then continues with the double Hydroform Short R exhaust, available in both light satin steel finish and in a high temperature resistant black ceramic version.
There is a dyno performance video available by following the links at the HP Corse website, and the company says that it has measured a +4.26 hp power increase at 9,200 rpm and massive torque gains of more than +7 ft lbs. at 5,300 rpm.