BMW Z4 (E89) 2009-2016 - FRONT ANTI-SWAY (27MM) SOLID STEEL
Each product comes with a unique serial number found on the silver tag. This is for authentication.
All products are backed by a 5 year manufacturing warranty from the date you received your products. Warranty covers welds and metal snaps. If products are re-powder-coated a color other than our company color of white, warrantying may be on either a case-by-case basis or voided.
If you live in an area that sees snow, warranty is limited to 1 year.
MUST READ BEFORE PURCHASING: Bracing has been designed to fit stock vehicles with no aftermarket modifications. Vehicles with high mileage, body damage, or old age may have chassis flex that will cause mounting points for bracing to not line up perfectly. Modification may be needed for bracing to line up perfectly. If you are unsure about fitment, please email us.
ATTENTION: IF APPLICABLE, PLEASE EXPAND THE ADDITIONAL INFORMATION TAB AT THE BOTTOM OF THIS PAGE BEFORE PURCHASING.
BMW Z4 (E89) 2009-2016 - FRONT ANTI-SWAY (27MM) SOLID STEEL (URKR-AF27-469)
Made from ASTM A500 Grade A (American US Standard Mild Steel)
All materials used are carefully selected to ensure the best performance and safety. The brackets are made of 4MM to 5MM steel plates, while the hollow steel tubes and oval tubes are of 1.2MM to 1.6MM thickness. These materials' thicknesses ensure the bars are rigid and strong to maintain constant geometry at all times, yet safe enough to crumble during an impact.
For more information on the design, check out our knowledge page: https://ultraracing-usa.com/knowledge/
Front anti-sway bars - also called stabilizer bars, are used to keep your vehicle from rolling over. It is a U-shaped steel bar that is connected to each of the vehicle’s front wheels. When your vehicle goes around a turn, your vehicle’s body rolls to one side, or its weight shifts to one side. When this happens, your vehicle is experiencing “body roll” or “sway.” The sway bar will control each wheel’s suspension to even out your vehicle’s body roll and keep your vehicle more level and in control.
What makes Ultra Racing anti-sway bars unique?
Consumers opt for our anti-sway bars because they are made from solid steel. Some cars come with factory anti-sway bars that are made hollow, which allows for more flex and less rigidity that's needed for performance vehicles. Car manufacturers make their anti-sway bars hollow to allow some give so that modern vehicles of today ride smoother and more comfortably. With an upgraded solid steel anti-sway bar, your vehicle will gain more traction and handle better through hard cornering.
BEFORE VS AFTER A FRONT ANTI-SWAY BAR
When cornering a turn, the transfer of weight will make the car sway to one side, causing body roll and difficulty turning, weakening the steering response.
The upgraded version of Ultra Racing’s anti-roll bar will be more effective in preventing the car from swaying through corners, greatly reducing body roll and enhancing stability/handling.
WHAT IS VEHICLE HANDLING?
Under-steer is a condition where, while cornering a turn, the front tires begin to slip. With the front tires broken loose from the road and the rear tires continuing to grip, the vehicle will ultimately turn less than desired. The front wheels lose their traction and won’t turn any sharper, even when the steering is being corrected to turn the car more. This will cause the car to go wide instead of following the turn. The dangers of under-steer lead to your vehicle running off the road, possibly hitting obstacles or other vehicles. Under-steer occurs in front-wheel-drive vehicles more often than in rear-wheel-drive vehicles.
Car manufacturers employ the FF (front-engine, front-wheel-drive) setup in modern cars for improving driver and passenger safety. The natural behavior of an FF car causes it to have inevitable under-steer due to its heavier front end. Under-steer can be corrected by stiffening the rear end of the vehicle by adding a rear strut bar and a rear anti-roll bar.
Over-steer is the direct opposite of under-steer. The front tires continue to grip the road and complete the turn while the rear tires break loose. This causes the rear of the vehicle to kick out, turning the front of the vehicle into the turn even further. Over-steer occurs in rear-wheel-drive vehicles more often than front-wheel-drive vehicles. Sometimes over-steer is done purposefully, which is called "drifting".
FR (front-engine, rear-wheel-drive) or RR (rear-engine, rear-wheel-drive) cars mostly experience over-steer when cornering. Over-steer can be corrected by stiffening the front end of the vehicle by adding a front strut bar and front anti-roll bar.
- BMW Z4 (E89) 2009-2016
- Will work on 3.0TT