Rear Sway Bar for Honda Fit: What You Need to Know
The Honda Fit is beloved for its compact size, fuel efficiency, and surprisingly versatile handling. For owners who want sharper cornering and reduced body roll, upgrading the rear sway bar (RSB) is one of the most effective modifications. This article explains why a rear sway bar matters, how to choose the right part—such as a 19 mm Progress Technology unit—and what to expect during installation and track use.
Why Upgrade the Rear Sway Bar?
A rear sway bar connects the left and right suspension components, resisting the opposite movement that occurs when the car leans into a turn. The stock RSB on most Honda Fit models is tuned for comfort, not performance. By installing a stiffer bar, you can:
- Reduce body roll during aggressive cornering.
- Improve rear‑end grip by keeping the tires flatter on the road surface.
- Enhance overall stability at higher speeds, especially on a track.
Many Fit owners describe the upgrade as a definitely good investment to have for the track life. The improvement is noticeable even on daily drives, but the benefits become most apparent when pushing the car through sweeps and hairpins.
Selecting the Right Rear Sway Bar
When shopping for a rear sway bar, consider the following factors:
- Diameter and material – A larger diameter (e.g., 19 mm) typically offers more stiffness. Progress Technology’s 19 mm rear sway bar is a popular choice because it balances rigidity with durability.
- Fitment – Ensure the bar is listed for the specific Honda Fit generation and trim level. A proper fit reduces the need for custom brackets.
- Adjustability – Some bars include adjustable end links, allowing fine‑tuning of the bar’s effective stiffness.
I decided to order the Progress RSB since I felt like the stock part was limiting my cornering confidence. The 19 mm size fit my Fit’s subframe perfectly
