SD MK3 Focus RS sound suppressor Auto Specialists Ultimate Lightweight high efficiency tube

Ultimate Lightweight high efficiency tube & fin intercooler core design

Turbocharger spool can drop nearly 500 RPMs

and are considered to be the best available

You don’t need any adjusting tools because of the patented compression adjuster at the lower end of the stainless steel housing

SD MK3 Focus RS sound suppressor Auto Specialists Ultimate Lightweight high efficiency tubeDesigned to stop the MK3 RS 'whistle' on idle or light throttle openings. The SD Performance sound suppressor is designed to cancel out this whistle. This is done by simply removing the standard part and replacing it with SD's sound suppressor. Features: Stops intake whistle SD Hoses silicone hose Easy DIY install Machined aluminium insert