BWI Group, a global company specializing in braking and chassis systems, has developed lightweight passive dampers for B, C and D-segment vehicles. The reduced-mass shocks are claimed to improve a cars' handling without compromising ride comfort but, this being a green-minded site, we're more intrigued by the reduced fuel consumption that goes hand-in-hand with lower vehicle weight.

BWI describes how it designed its passive damper system to tip the scales less than that of conventional shocks, stating:
By using structural plastics instead of metal brackets and spring seats, by varying the wall thickness of the damper tube, and by using hollow piston rods, BWI is able to reduce typical damper weight from 4 kilograms (8.8 pounds) to 3 kg (6.6 pounds). A saving of 4 kg is possible on a typical C-segment car equipped with front and rear McPherson strut suspension.
With automakers increasingly interested in curbing mass, even nominal reductions in weight contribute to the overall goal and will help vehicles meet the looming emissions standards that are forcing many companies to employ fuel-saving measures in every stage of development.

[Source: Green Car Congress]

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