F-Series M5/M6 Catless Downpipes 2011+
Free up your exhaust with our Catless downpipes!
RK TUNES catless downpipes eliminate the heavy and restrictive catalytic converters in the factory exhaust system. By eliminating the catalytic converters, your turbos can breathe more efficiently which reduces back-pressure. This reduction in back-pressure creates a faster and more audible turbo spool, a deeper and aggressive exhaust note, and most importantly, a 10-30WHP increase depending on vehicle modifications. In order to prevent a Check Engine Light, an ECU retune or 02 sensor spacer is recommended.
F series M5 / M6 front mount intakes
$ 1,350.00 $ 1,500.00
Our RK-TUNES front mount F series M5 / M6 intake design will outflow all other Front mount intakes for M5/M6 's. Many companies use a reduced and squished pipe to...
F90 M5 Front Mount Intakes
Our RK-TUNES F90 M5 Front Mount Intakes design utilizing high quality aluminum piping that can be powder-coated or painted any color, 5-ply wire reinforced silicone that can never suck shut, full 3.5...
Performance tune for E39 M5 (2000-2003)
E39 M5 Tune This is our tried and tested tune for an E39 M5. These tunes were designed on a Dynojet dyno and tested in the real world! All tune...