The B1 Dynamics Package is a combination of three Birds-exclusive performance upgrades designed to transform the chassis of the BMW 1 Series.
It includes the Quaife ATB Limited-Slip Differential, the B1 Sport Suspension upgrade, and the B1 Anti-Roll Bar Kit. This package is available for all BMW E87 and E82 1 series variants, most popularly the 130i and 135i.
The B3 Dynamics Package is a combination of three Birds-exclusive performance upgrades designed to transform the ride quality, handling performance and traction on UK roads.
The package includes the famous Quaife ATB Limited-Slip Differential, the B3 Sport Suspension upgrade, and the B3 Anti-Roll Bar Kit. This package is available for all BMW E9x 3 series variants, most popularly the 335i and 335d.
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Production 2011-present.
We've finally finished development and are quite amazed with the results. As 'petrol' heads, we were almost reluctant to deal with the 335d xdrive development car that arrived...
