RK Autowerks S58 Catless Downpipes - F97/F98 X3M & X4M

OVERVIEW

RK Autowerks catless downpipes for the S58-powered X3 M and X4 M remove the main restriction in the exhaust, so the turbos spool sooner and the engine makes more horsepower and torque. They are designed from 3D scans of the factory parts so they fit like OEM.

SPECS

• T304 stainless steel construction using mandrel bends
• CNC velocity stack flanges at the turbo mount
• Precision TIG-welded joints
• Heavy-duty stainless V-band / exhaust flanges
• Factory O2 sensor locations retained with stainless steel bungs
• Reduced under-hood temperatures

PARTS INCLUDED

• Pair of RK Autowerks catless downpipes

TECH RESOURCES

• Requires a supporting ECU tune — pair with an S58 tune such as the bootmod3 S58 Tune
• For off-road use only; will trigger a check-engine light. Federal and many state laws prohibit removing or modifying emissions equipment on vehicles used on public roads

PART NUMBER

• RK.DP.S58.F97

VEHICLE APPLICATIONS