G80 M3 and G82 M4 Valved Rear Axle-back Exhaust Exhaust w Tips:w matte black tips APR's Calibration Experts spent months

APR's Calibration Experts spent months fully recalibrating the factory engine management system to operate with both MPI and GDI injectors

This system is not compatible with the MS100100 intake mounted Catch Can System

Rugged and precise mounting brackets

5mm CB - 5x112 - 17mm Thick

5 with factory K04 turbo conversion

G80 M3 and G82 M4 Valved Rear Axle-back Exhaust Exhaust w Tips:w matte black tips APR's Calibration Experts spent monthsG80 G82 BMW M3 M4 Rear Exhaust Active Autowerke is proud to release the Active Autowerke Valved Rear Exhaust for the BMW G80 M3 and G82 M4. While these cars have received rave reviews for their performance, the sound is a muffled one leaving the driver to wonder if they are really driving a BMW M car. In order to solve this, Active Autowerke has created a full exhaust system for the G80 G82 which comprises this rear axle back valved exhaust, a mid