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Jeep 4Speed concept drops weight with lots of carbon fiber and aluminum

Jeep's latest lightweight 4Speed concept goes on a high carbon fiber and aluminum diet to cut weight, while better aerodynamics come courtesy of a raked windshield and heavily raked rear cage.

Jon Wong
Jon Wong was a reviews editor for CNET Cars. He test drove and wrote about new cars and oversaw coverage of automotive accessories and garage gear. In his spare time, he enjoys track days, caring for his fleet of old Japanese cars and searching for the next one to add to his garage.
Jon Wong
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The Jeep 4Speed concept is a lightweight, Wrangler-based concept. 

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To shave weight, lots of carbon fiber and aluminum were used.

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Power comes from a 2.0-liter turbocharged four-cylinder engine for the 4Speed concept.

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Compared to a stock Wrangler, the 4Speed has been shortened by 22 inches, while retaining a stock wheelbase length.

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The shorter overhangs give the 4Speed better approach and departure angles.

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The turbocharged engine works with an 8-speed automatic transmission.

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The 4Speed's interior boasts a customized instrument panel and exclusive seat coverings. 

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Aluminum has been used for the foot wells to save weight. 

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For improved off-road capability, the 4Speed gets upgraded axles and 18-inch wheels wrapped with 35-inch BF Goodrich Mud Terrain tires.

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Compared to a stock Jeep Wrangler, the 4Speed boasts a 2-inch higher ride height.

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