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The F9x M5 & M8 have 2 primary and 2 secondary catalytic converters for a total of 4 catalytic converters
Engineered and tested to work perfectly with stock dampers
it limits front axle grip and creates understeer
The 123 % increased core volume is an achievement we are proud of
Go lower or stiffer than these MMX Springs and your car will bounce and crash as the dampers are mismatched to spring-rate
MMX Performance BILLET DIFFERENTIAL INSERTS | BMW F2x | F3x BM3 The F9x M5 & M8Designed and engineered in house in the UK, the MMX differential insert kit for the BMW F2x and F3x chassis is designed to limit movement in the factory diff mounts to maintain proper suspension geometry when cornering and improve the responsiveness of the rear suspension and diff. Installation is very simple, can be performed in under an hour, and is completely reversible. By filling small voids in the four factory mounts as well as limiting vertical
