BMW F1X M5 / M5 S63 Downpipes 11247565233 this dense core provides a

this dense core provides a 32% increase in coolant surface area

is designed for the turbocharged inline 6-cylinder BMW B58 engine

268° Intake / 268° Exhaust   10

In addition to the flow benefits

(2) Robust Reinforced Tooth Jacket

BMW F1X M5 / M5 S63 Downpipes 11247565233 this dense core provides aUpgrade your BMWs performance with RK Autowerks Catless Race Downpipes for the F10 M5 and F06 F12 F13 M6 equipped with the S63 engine. Designed to eliminate the restrictive factory catalytic converters, these downpipes dramatically reduce backpressure and allow your turbos to spool faster for sharper throttle response and immediate gains in horsepower and torque. Each set is engineered using advanced 3D scanning and prototyping technology to ensure