Arrow exhaust system for MV Brutale 1090 is a full system, made of a set of stainless steel collectors (4:2:1 configuration) and a Pro-Racing stainless steel silencer (cone-shaped, with round section) with removable dB-killer and carbon endcap.
The system is easily fitted to the bike providing to remove the exhaust valve and its driving cables (leaving the valve actuator engine in place you won’t get any warning message on the display). Arrow collectors fit to the engine exhausts ports using the original x-shaped flanges and are fixed to the frame using the same fixing points as the original system.
Silencer is secured to the frame by means of a custom-made support bracket, to be fitted in between the right side rider’s footrest and the frame (this is not creating any difficulties when operating the rear brake lever). On the silencer’s body, a welded fixing point will match the bracket mounting hole to fix the silencer to the frame. A spring will secure the silencer to the mid-pipe.
Silencer has a built-in removable dB-killer.
b. power and torque values
1. test bench results (silencer with dB-killer)
2. test bench results (silencer without dB-killer)
c. noise figures
1. static noise with dB-killer: 110dBa @ 5150min-1
2: static noise without dB-killer: 112dBa @ 5150min-1
Static noise tests have been made following EU procedures (engine rpm during tests is the same as the levels stated on the id. plate of the bike).
d. images of the system
Images of the system fitted to the bike are not available at the moment. Below you will find some 3D images based on 3D model of the silencer.
Log
In 
2. test bench results (silencer without dB-killer)
