06/17/2026
When tuning at the track, there are many ways to reduce body roll, get better engagement on corner entry and overall cornering stability. This can include spring adjustments, roll center adjustments, weight distribution adjustments and so on.
While all of these can reduce body roll, not all of them are equally desirable from a tuning standpoint.
Increasing spring stiffness is one of the most common methods, but it comes with compromises. Stiffer springs don't just reduce roll, they affect braking, acceleration, bump compliance, and mechanical grip. A spring change influences virtually every aspect of the car's behavior, making it a broad adjustment rather than a targeted one. You may achieve the roll control and stability you're looking for, but at the expense of traction and compliance elsewhere on the track.
Raising the roll center can also reduce body roll by changing the geometry of the suspension and reducing the leverage cornering forces have on the chassis. However, roll center changes affect much more than roll angle. They alter load transfer, jacking forces, camber gain rates, overall chassis feel and the cars general reaction to bumps/banking. While roll center changes are a very affective tuning tool, a roll center change is a very broad adjustment that doesn't concentrate on just one area on the racetrack.
A sway bar offers a different approach. Instead of changing the suspension geometry or the characteristics of the spring package and general platform, it increases roll stiffness directly. This allows racers to tune with body roll while preserving the mechanical grip, ride compliance, and platform characteristics that the springs provide. If the car handles well over bumps, puts power down effectively, and has the spring package you want, a sway bar lets you improve roll and cornering stability while minimizing altercations to other strengths in the right applications.
That's what makes a tunable sway bar such a valuable performance tool. It allows you to make targeted adjustments to roll stiffness and cornering balance without rebuilding the entire setup. Need more stability through the center of the corner? Need to fine-tune the balance as track conditions change? Adjust the sway bar. Need less roll without changing how the car reacts under braking straight line braking or over bumps? The sway bar is often the most direct solution.
For many racers, suspension geometry and spring rates establish the foundation of the setup, while the sway bar becomes the fine-tuning device. Rather than changing the entire personality of the race car with spring or roll center adjustments, a tunable sway bar gives you a faster, more precise way to control roll, optimize balance, and adapt to changing conditions. That's why it remains one of the most effective and versatile tuning tools in modern chassis setup.
At Speedway Engineering, we build sway bars for almost every application to give you the advantage of fine tuning some of the most critical spots in the racetrack.
Below is a rate chart that has some of our standard sway bars that fit most standard applications. We have many options above and below these bars in rate for applications that require more or less rate.
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