9.5 x 7 Trapezoid, 18" Length, 1.75" Bore, Twin Special S957TRAPEZOID250

9.5 x 7 Trapezoid, 18" Length, 1.75" Bore, Twin Special. A twin special consists of a silencer with a single centre to offset inlet and two centre to offset outlets on opposite sides- one on the same side as the inlet and one on the opposite side. The gases also pass through a chamber. This silencer is highly customisable and we can advise on the degree of volume achievable by customising the size of the chamber, perf size etc.