Strut Brace Buyer's Guide

Strut braces are most commonly mounted across the front strut towers in the engine bay, though rear strut braces are also available. Front braces are more popular because that's where the majority of braking and steering forces are concentrated. Rear braces, while effective at improving rigidity in the back of the car, come with the notable downside of reduced trunk or cargo space.

MacPherson Struts: Why Strut Braces Work Best Here

Strut braces are most common — and most effective — on vehicles with a MacPherson strut suspension. In this design, the strut itself acts as the upper control arm, meaning the strut towers experience much higher lateral forces during cornering compared to double wishbone setups. By connecting both towers, the brace distributes this load across the chassis rather than concentrating it at each individual mounting point.

Strut Brace vs. Sway Bar

These two parts are often confused, but they address different problems:

• Sway bars reduce body roll by linking the left and right control arms.

• Strut braces improve chassis rigidity by linking the strut mounting points, reducing chassis flex.

For the best handling, these two modifications should be paired together. You can read more about sway bars here.

How to Choose a Strut Brace

Compatibility and Clearance

Strut braces are highly vehicle-specific. Always choose a strut brace specifically designed for your vehicle. Additionally, not every car can accommodate one. Some engine bays lack the necessary mounting points or have other components like the intake manifold in the path between the two towers. If you have other aftermarket parts installed, always double check engine bay clearance before purchasing.

Position: Front vs. Rear

• Front: The most common position as this is where braking and steering forces are concentrated.

• Rear: Useful for improving rigidity at the back of the car, particularly on hatchbacks and wagons where the rear structure is more open. Be aware that installation may require removing or trimming interior trim panels and will reduce available cargo space.

Mounting Style: 2-Point vs. 3-Point

Most braces are 2-point, connecting the two towers. For maximum rigidity, 3-point braces include an additional mounting point to the firewall. 3-point braces are more common on track builds.

Material

• Steel: Strong, affordable, but heavier than alternatives. Best for budget builds or heavy-duty track use.

• Aluminum: Good strength and meaningful weight savings. Best for street use and moderate track use.

• Carbon Fiber: Maximum weight savings and excellent rigidity. Best for performance builds willing to pay premium prices.

Conclusion

A strut brace is one of the simplest, most accessible chassis upgrades available. It's a bolt-on modification that improves chassis rigidity and handling consistency, without meaningfully affecting ride quality. By reducing flex between strut tower mounting points, it helps your suspension work more predictably under load.

For the best results, pair your strut brace with complementary suspension upgrades like sway bars, coilovers, or lowering springs. You can find all the parts you need and plan your build on RideBuilder.

Additional Resources

• Coilover Buyer's Guide

• Sway Bar Buyer's Guide

• Lowering Spring Buyer's Guide

• Control Arm Buyer's Guide