Akrapovic Aprilia RSV4 21-24, TUONO V4 21-24 Optional Link Pipe Track Day (Titanium) - L-A10E11/TDDesigned for use on closed course competition circuits, this lightweight titanium link pipe with resonator lowers the static noise level at 5,500 rpm to 100 dB when installed with the muffler and headers from the Evolution Line (Carbon) exhaust system. This track dayorientated product, which complements the Evolution Line (Carbon) without compromising power and torque gains, requires mandatory remapping when installed. Weighing 3. 0 kg less 37. 2%