Whiteline 19-20 BMW Z4 18mm Heavy Duty Adjustable Swaybar (BTR99Z)

Regular price $148.41 USD Sale price $148.41 USD Regular price $197.88 USD
Sale 25.0% $49.47 USD (25.0%)
In Stock!
SKU: whlBTR99Z
Product Description

Sway bars are primarily made to 'Activate More Grip' and reduce body roll or sway. By minimizing body roll, lateral stresses are distributed more uniformly across the tires, enhancing overall performance and cornering grip. The best handling modification you can make to your car for the money is this Whiteline 18mm 3-point adjustable sway bar, which gives your car more grip, better handling, and overall performance. In actuality, benefits include increases in tire wear, safety, and handling without degrading ride comfort or quality.


  • BMW Z4 M40i (2019, 2020)


  1. Improved Vehicle Performance: Whiteline Springs are designed to enhance vehicle performance, providing benefits such as improved handling and responsiveness.

  2. Maintains Safety: While enhancing performance, these springs maintain important safety characteristics, ensuring a secure driving experience.

  3. Preserves Ride Quality: Despite performance improvements, ride quality remains a priority, allowing for a comfortable driving experience.

  4. Front and Rear Springs: This kit includes 3.5kg/mm (196lb/in) front-rated springs, offering a 30mm drop, and 3.3kg/mm (185lb/in) rated rear springs, providing a 25mm drop for the vehicle.

  5. Lowered Center of Gravity: By lowering the vehicle's center of gravity, these springs contribute to better stability and handling, and they also enhance the overall appearance of the vehicle.

  6. Unique Progressive Rate Coil Design: Whiteline Springs features a unique progressive rate coil design, which not only improves performance but also adds to the visual appeal of the vehicle.

  7. European Manufacturing: Developed and manufactured in Europe, these springs are crafted from the highest quality materials, coatings, and fine tolerances to ensure precise fitment.

  8. Compatibility: Whiteline Springs are engineered for optimal balance with both OEM and aftermarket shocks, offering versatility in compatibility.

  9. Enhanced Grip Activation: For maximum grip activation, these springs can be paired with the Whiteline Sway Bar and Essentials kit, providing unrivaled handling and optimal vehicle performance.

To provide faster delivery and turn around time; Kami Speed ships products out from different warehouses throughout the United States. Usually averaging 1-4 business days for processing prior to shipping.

Depending on the package, we ship using different carriers according to the item's location, content, and size.

Freight truck & international items, will require up to 7 business days to ship due to size and logistics.

All orders made after 3:00pm ET will be shipped or processed the next business day.

Unless otherwise noted as "In Stock" or exact ETA. Special Order items have an ETA of 5+ weeks.

Orders over $500 will ship insured and over $1,000 with signature and insurance in order to guarantee delivery. Orders over $1000 may not be able to ship to a different address not listed as the billing address or confirm payment address from the form of payment used. Orders with suite numbers, different billing, or apartment numbers will require signature if valued over $100.

All international orders outside of the USA are subject to duties and taxes fees per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.

Processing and logistics on in stock international orders can take up to 7 business days to process & ship.

In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail. All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to www.P65Warnings.ca.gov/passenger-vehicle.

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