useless

[[ion] C2]

that's cheap chief, most strut bars are $160+

body twist would be the front of the car twisting relative to the rear, the front strut tower bar stiffens up the steering as -Alero- said.

It's not useless.

A strut bar or strut brace is a mostly aftermarket car suspension accessory used in conjunction with MacPherson struts on monocoque or unibody chassis to provide extra strength between the strut towers.

A strut bar is designed to reduce this strut tower flex by tying two parallel strut towers together. This transmits the load of each strut tower during cornering via tension and compression of the strut bar which shares the load between both towers and reduces chassis flex.

Resulting from the improved chassis rigidity (similar to that gained from a lower tie bar); may be improved steering precision under high load conditions (cornering and braking). Reduced understeer, tire wear and metal fatigue in the strut tower area may also be experienced.