Performance Mufflers by MBRP. MBRP Universal Mufflers Features - Turn up the volume on your exhaust system with MBRP Universal Mufflers. Free-flowing chambered or spiral core designs speed up exhaust flow for enhanced performance. Available in a wide range of inlet/outlet sizes and patterns to work with cars, trucks and SUVs. Fits inlet piping from 2.5 to a full 5. Wrought from brushed aluminized steel, black coated aluminized steel, T409 stainless steel or T304 stainless steel. MBRP Mufflers - Best Price on MBRP Universal Exhaust Mufflers - Free Shipping. For the top selection of MBRP Exhaust, Mufflers & Tips shop online today. The MBRP Mufflers - Best Price on MBRP Universal Exhaust Mufflers - Free Shipping will improve and personalize your vehicle. Performance Mufflers by MBRP - selected by many auto enthusiasts in the top automotive discussion forums. MBRP Universal Mufflers for your vehicle will deliver the results you are looking for! MBRP Universal Mufflers - Exhaust, Mufflers & Tips - Performance Mufflers.