This Milltek Sport upgrade kit is designed to convert an existing Milltek Sport Cat-Back system to a Golf R-style configuration, specifically tailored for vehicles equipped with a Maxton Design rear diffuser. The kit allows seamless adaptation to the new diffuser layout, enhancing both visual appeal and exhaust functionality. To complete the transformation, it is essential to purchase two additional tailpipes matching the original tip specification (compatible part numbers: MSTIP250, MSTIP251, MSTIP252, MSTIP253, or MSTIP244). - Pipe diameter - 3.15'' - Enables conversion from standard Cat-Back to Golf R-style outlet - Designed for use with Maxton Design rear diffuser - Requires two additional tailpipes for full compatibility - Ensures factory-grade fitment with Milltek Sport exhaust systems