-10%
Whiteline-Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar
Whiteline-Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar
Whiteline-Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar
Whiteline-Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar
Whiteline-Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar
Click to zoom in

Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar

Whiteline
WHLBTR99Z
9319924462889
Sway Bars
2 Units In Stock
$ 213.88 $ 192.49
$ 192.49

Whiteline 19-20 BMW Z4 Rear 18mm Heavy Duty Adjustable Swaybar is the exact Whiteline sway bars identified by manufacturer part number BTR99Z. Match the part number, vehicle application, mounting position, dimensions, and suspension configuration before ordering.

Key Features

  • BMW, Toyota Suspension Stabilizer Bar Assembly - Rear - Whiteline BTR99Z / 09319924462889 Sway Bar - 18mm 3 Point Adjustable Whiteline Suspension Stabilizer Bar Assembly.
  • Installation Difficulty: Difficult Installation Time (hrs): 4 Kit Contents: 1 Sway Bar, 2 Bushings, 2 Lateral Locks Website Position: Rear Wheel Alignment Required: Yes.
  • Larger diameter sway bars offer a higher torsional resistance which in turn increases overall roll stiffness.
  • Supplied with extreme pressure molybdenum disulphide (LM) based grease for extended life.
  • Forged ends ensure maximum strength and performance of the sway bar at the sway bar link mounting point.
  • Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway.

Fitment

Verified catalog applications: 2019-2021 BMW Z4, 2020-2021 Toyota GR Supra. Confirm trim, suspension configuration, position, and manufacturer exclusions for the exact vehicle before ordering.

Years Make Model
2019-2021 BMW Z4
2020-2021 Toyota GR Supra

Specifications

Brand Whiteline
Manufacturer Part Number BTR99Z
SKU WHLBTR99Z
UPC 9319924462889
Product Type Sway Bars
Fitment Type Vehicle Specific
Catalog Status Manufacturer Catalog Verified
Condition New

What's Included

One new Whiteline sway bars identified by manufacturer part number BTR99Z, plus only the hardware expressly supplied by Whiteline for this exact part number.

About Whiteline

Whiteline develops suspension components for street and performance applications, including sway bars, bushings, links, control arms, springs, and alignment hardware.

Related Whiteline Products

Frequently Asked Questions

Will Whiteline BTR99Z fit my vehicle?
Verified catalog applications: 2019-2021 BMW Z4, 2020-2021 Toyota GR Supra. Confirm trim, suspension configuration, position, and manufacturer exclusions for the exact vehicle before ordering.

What should I verify before ordering?
Verify the exact part number, year, make, model, suspension configuration, mounting position, dimensions, factory equipment, and manufacturer exclusions.

What is included?
The package contains only the Whiteline components and hardware specified for part number BTR99Z. Related service parts and tools are sold separately unless expressly listed.

Installation

Follow Whiteline's current instructions for part number BTR99Z. Support the vehicle safely, test-fit every component, torque fasteners at the specified suspension position, and complete an alignment when the procedure requires it.

BMW Z4 Parts and Accessories

BMW Z4 Parts and Accessories

Shop BMW Z4 parts for intake upgrades, cooling projects, brake maintenance and suspension work at Black Ops Auto Works. Explore Dinan and do88 airflow options alongside Bilstein dampers and chassis components. Start with your Z4 generation and engine to compare the parts that suit your roadster or coupe.Intakes and Cooling for Your Z4Dinan lists separate cold air intakes for stated G29 sDrive30i and M40i applications. do88 also lists G29 M40i B58 intake options, including a package with a turbo intake for the original turbo. Compare the full contents and engine coverage to decide whether you need an intake alone or a coordinated inlet project. Cooling components have their own engine and system applications.Bilstein Suspension and Chassis PartsCompare Bilstein B6 and B8 applications for your suspension project. Listings distinguish E85 coverage from M Roadster references, with side-specific front struts where stated. Review factory equipment and the intended spring-and-damper combin...

View BMW Z4 Parts and Accessories Products
Suspension

Suspension

Shop suspension parts and kits for maintenance, ride-height changes and a coordinated handling setup. Compare springs, coilovers, dampers, control arms, sway bars, links and service components for the actual vehicle and its factory equipment. Start with the driving goal, then choose a compatible system and the parts needed to complete it.Springs, Coilovers and DampersLowering springs change the spring specification while retaining a compatible damper arrangement. A coilover package can combine springs and adjustable damper hardware, while a shock-and-spring service kit may supply complete corner assemblies. Compare the exact contents and adjustments for each reference.Swift, Eibach and Silver’s options appear alongside application-specific service and upgrade components. Choose the intended ride height, use and retained factory equipment, then review spring/damper compatibility, available travel and clearance.Arms, Links and Roll ControlControl arms and toe links locate the wheel an...

View Suspension Products
Sway Bars

Sway Bars

Shop front sway bars, rear sway bars, matched anti-roll bar kits, adjustable sway bars, heavy-duty truck stabilizer bars, off-road Antirock systems, bushings, and service components at Black Ops Auto Works. This collection covers street cars, muscle cars, trucks, SUVs, Jeeps, European performance vehicles, Japanese sport compacts, autocross builds, track cars, and off-road applications. Sway Bars and Anti-Roll Bar Kits A sway bar, also called an anti-roll bar or stabilizer bar, connects the left and right sides of a suspension through a torsion spring. When the suspension moves differently from one side to the other, the bar twists and contributes roll stiffness. This can reduce body roll and change how lateral load transfer is distributed between the front and rear axles. Sway bars from Eibach, H&R, Hellwig, Progress Technology, aFe Control, PERRIN, Whiteline, SuperPro, UMI Performance, QA1, RockJock, Ridetech, Pedders, Cusco, COBB, Dinan, APR, Bilstein, and Skyjacker cover a w...

View Sway Bars Products
Sway Bars & Bushings

Sway Bars & Bushings

Build a coordinated roll-control setup with sway bars, mounting bushings, brackets and end links. Compare Eibach, Progress, Hellwig, H&R, SuperPro, Whiteline, RockJock and other listed systems for the vehicle and intended use. Choose an axle upgrade, matched kit or service repair, then select compatible mounting components.Front, Rear and Matched Anti-Roll KitsA sway bar adds roll stiffness when the left and right suspension move differently. Front and rear changes affect the complete handling balance, so choose using application-specific guidance and the existing springs, dampers, tires and alignment.Compare single bars with matched front/rear systems. Adjustable holes can change effective rate, while material, wall thickness, arm length and mounting geometry also matter. Diameter alone does not establish equivalent stiffness across different designs.Bushings, Brackets and End LinksMount bushings must match the actual bar diameter and bracket shape. Measure the installed bar at...

View Sway Bars & Bushings Products
Toyota GR Supra Parts & Accessories

Toyota GR Supra Parts & Accessories

Explore Toyota GR Supra parts for exterior styling, intake or exhaust projects and chassis details at Black Ops Auto Works. Compare ADRO body components, aFe engine-specific systems, ACT clutch options and 3D MAXpider cabin protection. Select the exact generation, engine and transmission before planning the order.ADRO Exterior ChoicesThe selection includes stock-bumper front lips, a separate facelift bumper-and-lip package, side skirts, winglets and wing references. Tall uprights are a different purchase from a complete wing. Match actual bumper, full production coverage and mounting scope before combining body components.2.0L and 3.0L Intake or Exhaust ProjectsChoose aFe intakes and charge pipes using the exact 2.0L four-cylinder or 3.0L six-cylinder engine, production and installed induction layout. Compare complete kits with replacement filters or connection pieces, and review media-care and calibration requirements for the selected product. Confirm mating parts and required inst...

View Toyota GR Supra Parts & Accessories Products
Toyota Supra Parts and Accessories

Toyota Supra Parts and Accessories

Shop Toyota Supra parts for exhaust, cooling, chassis and styling projects at Black Ops Auto Works. Explore AWE exhaust systems, do88 cooling choices, Dinan body details and Seibon panels alongside manual drivetrain and engine-build components. Select the actual generation, engine and transmission before coordinating the order.A90/A91 Exhaust and Cooling ProjectsCompare AWE Touring and Dinan valved exhaust systems by exact later-Supra engine and production coverage. Match engine and current connections before comparing supplied sections or finish. do88 auxiliary radiators, transmission coolers, intake systems and charge-cooler manifolds serve separate systems and require exact engine-generation support.Chassis and Brake ChoicesChoose Dinan springs, handling components and HKS braces by exact Supra chassis and factory-suspension coverage. Review supplied pieces, supported mounts and the alignment plan before installation. For EBC big-brake or service-brake options, match generation, ...

View Toyota Supra Parts and Accessories Products
Whiteline

Whiteline

Shop Whiteline suspension and chassis components at Black Ops Auto Works. Compare sway bars and links, control arms, mounting bushings and selected spring or lift-kit references, choosing parts around a defined repair or handling project.Sway Bars, Links and Mount BushingsCompare complete bars, adjustable links and individual mounting bushings as separate product choices. Diameter-specific bushes require measurement of the installed bar. Adjustable-link applications also have their own mounting and adjustment requirements; review current suspension geometry with the installer.Control Arms and Service KitsComplete control arms and replacement bushings address different jobs. Some service-kit listings specify an existing Whiteline arm reference, including KTA262. Choose a service piece for the installed assembly rather than assuming the kit includes a complete arm.Springs and Lift ApplicationsLowering-spring and trail-lift references have specific vehicle and equipment coverage. Heavy...

View Whiteline Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×