Sound Whistle Muffler Exhaust Pipe Auto Blow-off Valve Simulator for Universal Simulator Whistler

S is suitable for displacement of 1.0-1.6, exhaust pipe diameter 32-43 mm M is suitable for displacement of 1.6-2.0, and the exhaust pipe diameter is 37-48 mm L is suitable for displacement of 2.0-2.4, exhaust pipe diameter 44-55 mm XL is suitable for displacement of 2.4 or more, and the exhaust pipe diameter is 56-85 mm

Feature: Made of light weight aluminum CNC Machined from 6061 T-6 Aluminum 1" muffler tip for best effect (OEM Muffler) Install on Aftermarket muffler, Catback, Axleback muffler it will not produce any sound Easy installation Universal fits for most cars w/ A STRAIGHT OEM Muffler Exhaust, doesn't fit the ELBOW muffer.