BC RACING COILOVERS ER SERIES - BMW 1 SERIES F20 M140I (14+) (3-BOLT TOP MOUNT) Model-E90/E92/E93 M3Final Drive Calibration Flex Glitch unlocking & resealing

Flex Glitch unlocking & resealing

Once the device has started and you’re on the landing page

Stage 2 TRS Custom Tune

Once the ECU has been unlocked

BC RACING COILOVERS ER SERIES - BMW 1 SERIES F20 M140I (14+) (3-BOLT TOP MOUNT) Model-E90/E92/E93 M3Final Drive Calibration Flex Glitch unlocking & resealingThe BC Racing ER Series is a high performance coilover system featuring external reservoirs and completely separate compression and rebound damping adjustment. It builds on the proven quality of the BR and DS Series but adds far greater tuning control, making the ER Series ideal for drivers who want more precise handling balance on fast road cars and track focused builds. Key Features Digressive piston and damping curve External reservoirs with 30