MBRP PRO Series 2.5" Cat back Dual Exhaust System - Audi / S5 / S4Our PRO Series is the best performance exhaust system that money can buy. It is a series designed and built for the serious enthusiast who will settle for nothing less. Constructed from T304 stainless steel it delivers you optimal durability that keeps on looking its best. Built to Perform MBRP's performance exhaust systems are built to perform. Designed to maximize exhaust flow and minimize exhaust temperatures your vehicle. Every system we sell has

clean shine to your paint surface every time

NOTE: For cylinders 1-4

Inside Diameter: 60mm ID Length: 300mm Spring Rate: 150 N/mm or 857 lbs/inch

OE Part # 51237893236 / 51-23-7-893-236 / 51 23 7 893 236

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Replacing old worn out transmission mounts with our upgraded mounts will provide for a sportier driving experience

Includes new sealing o-ring

Race Springs are made with extremely high tensile strength wire alloy which allows the use of a thinner wire

The kit also comes with the connectors you'll need

18-30-7-553-601 / 18 30 7 553 601 / 18307553601

Includes: One heavy weight GS2 shift knob

They are made with OEM standard quality and are designed for stock lights direct replacement