On the final production aircraft the right side door has been eliminated to save weight.

They left the cassette box on Earth to save weight.

The transmission's case is made of magnesium, a first for the industry, to save weight.

To save weight, he did not bring a violin case.

When not required for a specific mission they can be omitted to save weight.

The design also works without a cooling system, saving weight.

Some steel was used in the hull to save weight.

This is the first place you want to save weight.

A single door might save weight, but it's not very convenient sometimes.

How much faster will a car go if you strip it to save weight?