A strut bar, strut brace, or strut tower brace (STB) is an automotive suspension accessory usually used in conjunction with MacPherson struts on monocoque or unibody chassis to provide extra stiffness between the strut towers.
With a MacPherson strut suspension system where the spring and shock absorber are combined in the one suspension unit, the entire vertical suspension load is transmitted to the top of the vehicle’s strut tower, unlike a double wishbone suspensionwhere the spring and shock absorber may share the load separately. In general terms, a strut tower in a monocoque chassis is a reinforced portion of the inner wheel well and is not necessarily directly connected to the main chassis rails. For this reason there is inherent flex within the strut towers relative to the chassis rails.
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 which ties the two towers together and reduces chassis flex. To accomplish this effectively (especially on MacPherson strut suspensions), the bar must be rigid throughout its length.
Front Sturt Bar
& Rear Anti-roll
Front Anti-roll bar
Rear upper Front Lower, Mid Lower Rear Lower
An anti-roll bar (anti-sway bar, sway bar, stabilizer bar) is a part of many automobile suspensions that helps reduce thebody roll of a vehicle during fast cornering or over road irregularities. It connects opposite (left/right) wheels together through short lever arms linked by a torsion spring.
Purpose and operation
Anti-roll bar is intended to force each side of the vehicle to lower, or rise, to similar heights, to reduce the sideways tilting (roll) of the vehicle on curves, sharp corners, or large bumps. With the bar removed, a vehicle’s wheels can tilt away by much larger distances (as shown by the SUV image at right). Although there are many variations in design, a common function is to force the opposite wheel’s shock absorber, spring or suspension rod to lower, or rise, to a similar level as the other wheel. In a fast turn, a vehicle tends to drop closer onto the outer wheels, and the sway bar soon forces the opposite wheel to also get closer to the vehicle. As a result, the vehicle tends to “hug” the road closer in a fast turn, where all wheels are closer to the body. After the fast turn, then the downward pressure is reduced, and the paired wheels can return to their normal height against the vehicle, kept at similar levels by the connecting sway bar.
Established in year 2002, Ultra Racing is a Malaysian-based specialist manufacturer in Chassis Handling and Tuning components which offers “one-piece” design of solid brackets attached to the strut bars which makes the strut bar simply more durable and provides better resistance in chassis flex. Ultra Racing distributed to more than 14 countries, Ultra Racing is now a trusted brand worldwide. Ultra Racing will also greatly involve itself in all sorts of motorsport worldwide. Ultra Racing is also the first in the country to introduce the multi-point bars, which gives superior performance against conventional bars in distributing the forces being stressed to the chassis. Followed by feedback collected from street and race track testing, enhancing, strengthening and improving the safety of the vehicle is our priority:
Design Philosophy – Enhance and strengthening the chassis of the vehicle without altering or affecting the original chassis specifications. Improve driving dynamics and drive comfort.
Safety Philosophy – Individually designed products to suit to different vehicles. The shape, material thickness and material strength is specially selected and chosen to minimize chassis damage and passengers injuries during an impact.
Ranging from Front Strut Bars, Rear Strut Bars, Side Fender Bars,Front Lower Arm Bars,Anti Roll Bars,Side Floor Bars to Torsion Bars. Made-to-order service is also available. All the products are designed with safety and superior handling in mind.
Ultra Racing has also been awarded the Asia Pacific Super Excellent Product Excellence Award (2007),Asia Pacific Top Brand (2009) and ISO 9001:2008 (2010). These achievements are important milestones in our quest to expand globally.
Above images will show you the differences between Honda Civic FD body roll with Ultra Safety Bar and Without Ultra Safety Bar.
Honda Civic FD installed front strut bar and rear anti roll bar to show you the differences
Old vehicle’s chassis will start to crack and unwanted noise will also generated.
How To Reduce Car Body-Roll with Vehicle Safety Bar
Front Strut Bar + Rear Sway Bar Comparison (Before & After)
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