Stainless Bros 2.50in Normally Closed / Boost Open 304SS Valve

If you're looking to add some serious growl to your exhaust note or want to bypass your muffler for track days, this Stainless Bros exhaust cutout valve is a solid option. It's a 2.50-inch valve designed to be normally closed, meaning your exhaust stays routed through your muffler until you decide otherwise. The clever part is its 'boost open' functionality, which allows it to automatically open up when your engine builds boost, giving you a more aggressive sound and potentially a slight performance bump during spirited driving.

This valve is constructed from 304 stainless steel, which is known for its good resistance to corrosion, especially important for exhaust components that deal with heat and moisture. The 2.50-inch diameter is a common size for many performance exhaust systems, making it a versatile choice. Installation typically involves cutting a section out of your existing exhaust pipe and welding this valve in place, allowing you to control when it opens, either manually with a switch or automatically via its boost-actuated design.

Keep in mind that this valve is not CARB approved and cannot be shipped to California. It's a great way to get two distinct exhaust sounds from one system, offering a more aggressive tone when you want it and a quieter ride when you don't.