Supersprint BMW E60 M5, E61 M5, E63 M6 & E64 M6 Stainless Steel Sleeve Pipes Kit for the Stock Catalytic M3 (E90/E92/E93) INTERIOR STYLING - Road style refinement but

- Road style refinement but with race material ability to withstand heat with respect to life and μ

BMW part number 18305A09B63

This includes

each set is precisely tuned for the 435i/440i platform

Supersprint BMW E60 M5, E61 M5, E63 M6 & E64 M6 Stainless Steel Sleeve Pipes Kit for the Stock Catalytic M3 (E90/E92/E93) INTERIOR STYLING - Road style refinement butThe Supersprint Sleeve Pipes Kit for the Stock Catalytic is a precision, direct fit stainless steel upgrade engineered for the BMW E60 M5, E61 M5, E63 M6 & E64 M6. It replaces the restrictive factory component to free up exhaust flow, sharpen throttle response and give your BMW a deeper, more purposeful note. Supersprint has been handcrafting performance exhausts in Mantova, Italy since 1955. Every system is designed and validated on the dyno not by