Chassis underbracing is a great modification that will dramatically improve the body rigidity of your FR-S, reducing body flex and improving steering quality, response and overall traction to give you lower track times while preventing unwanted behavior from your FR-S. Improving the chassis bracing will also directly improve the effects of upgraded springs, sway bars or coilovers, completing the prefect suspension setup for any application. Tanabe suspension braces are designed with a unique double I-beam construction which makes it highly durable and lightweight. Tanabe suspension braces come powder coated for long lasting quality, protecting the metals from corrosion and rust. This is the perfect compliment for the enthusiast racing time attack or drags, the Tanabe Underbrace will eliminate chassis flex for high horsepower vehicles.