MMX Performance Ultimate Differential Track Pack - G8X M2 / M3 / M4The MMX Performance Ultimate Differential Track Pack is engineered for G8X owners who push their cars hard on track and need reliability lap after lap. This kit addresses the three most common weak links in the G87 M2, G80 G81 M3, and G82 G83 M4 drivetrain: oil starvation, differential movement under load, and heat soak during extended sessions. By reinforcing the diff system from multiple angles, it ensures consistent performance even during long