BC RACING COILOVERS RM SERIES - BMW 3 SERIES E46 CONVERTIBLE (98-06) Type:MA All shiftmaps have been recalibrated

All shiftmaps have been recalibrated to create a way more lively driving experience than before

The M54B30 is legendary for its reliability and all-around performance

If you need guidance on the best spring rate for your tyre choice

having done 10

ECU Unlock Service

BC RACING COILOVERS RM SERIES - BMW 3 SERIES E46 CONVERTIBLE (98-06) Type:MA All shiftmaps have been recalibratedThe BC Racing RM Series uses inverted monotube dampers on the front, or on both front and rear depending on the application. It offers many of the same features as the BR Series but with the added advantages of an inverted damper design, making the RM Series better suited to fast road and track focused driving. Inverting the damper reduces unsprung weight, improves steering response, and moves critical damper fluid away from brake and hub heat. This