What makes Whiteline different from OEM suspension components?

Whiteline suspension products are engineered for performance and durability well beyond OEM standards. While factory (OEM) components often use soft rubber bushings that degrade over time and under load, Whiteline uses advanced polyurethane and bushing technology that resists oil, heat, abrasion, and weathering. This results in sharper handling, more responsive steering, better load control, and significantly improved lifespan — without the harshness of traditional solid bushings.

Do I need a wheel alignment after installing Whiteline components?

It’s recommended to perform a wheel alignment after installation to ensure optimal performance and tire wear.

Are Whiteline Fixed Offset Upper Control Arms (UCAs) necessary for lifted vehicles?

They help maintain correct alignment and steering geometry after a vehicle is lifted.

Can I install Whiteline products myself?

Some products are DIY-friendly, but professional installation is recommended for suspension components.

Do Whiteline products come with a warranty?

Yes. Please refer to our warranty policy for details.

BTR99Z

Rear Anti Roll Bar - 18mm 3 Point Adjustable to Suit Toyota Supra DB42 and BMW Z4 G29

Rear Anti Roll Bar - 18mm 3 Point Adjustable to Suit Toyota Supra DB42 and BMW Z4 G29

18mm 3 Point Adjustable

Item Price

£246.26 £197.02

SKU	BTR99Z
Warranty	lifetime warranty
Installation Time	4 Hours
Fitting Position	Rear Axle

Select your car to check fitment.

SALE ENDS IN

Pre-Order

Available for Preorder. Stock due on 19/8/2026.

Description

Benefit Note:
Engineered to 'Activate More Grip', sway bars are principally designed to reduce body roll or sway. By reducing body roll, lateral loads are spread more evenly across the tyres thereby increasing cornering grip and improving outright performance. This Whiteline 18mm 3 point adjustable sway bar = more grip = better handling = outright performance - it's the best dollar for dollar handling improvement you can make to your vehicle. In fact, benefits extend to improvements in handling, safety and tyre wear without affecting ride quality or comfort.

*All prices shown on the website include VAT. You will not be charged any additional fees related to tax. For international orders, VAT is removed, local import duties or taxes may apply but will not be charged by us.

Specifications

Kit Specifications

Diameter (mm)	Diameter (in) Fraction	Diameter (in) Decimal	Material	Sway Bar Adjustment Type
18	23/32"	0.708	Solid Spring Steel	3 Point Adjustable

Diameter (mm)	18
Diameter (in) Fraction	23/32"
Diameter (in) Decimal	0.708
Material	Solid Spring Steel
Sway Bar Adjustment Type	3 Point Adjustable

Adjusting the sway bar's soft to hard setting will modify its torsion regidity, causing the sway bar to operate as per the size below.

Sway Bar Adjustment Settings

Setting	Effective Bar Size (mm)	% Change vs Previous Setting	% Stiffer Than OE
Soft - Comfort / low grip	17 mm	-	-64.3%
Medium - Balanced	18 mm	+25.7%	-55.2%
Hard - Maximum roll control	19 mm	+24.1%	-44.4%

Packaged Weight and Dimensions

More Information
Units	Weight	Length	Width	Height
cm/kg	3.8kg	120cm	25cm	20cm
in/lbs	8.38lbs	47.24"	9.84"	7.87"

Units	cm/kg	in/lbs
Weight	3.8kg	8.38lbs
Length	120cm	47.24"
Width	25cm	9.84"
Height	20cm	7.87"

Misc. Product Information

More Information
SKU	BTR99Z
Components Per	1 Sway Bar, 2 Bushings, 2 Lateral Locks
Kits Required	1
Sub brand	Performance
Product Note	Engineered for precision and balance and maintains optimal suspension geometry under load; the perfect, complete upgrade. Includes: 1 Sway Bar, 2 Bushings, 2 Lateral Locks
EAN	9319924462889

Installation & Fitment Guide

More Information
Install Guide	Downloads
Installation Time	4 Hours
Installation Difficulty	Suspension Specialist recommended.
Wheel Alignment Required	Yes
Recommend Wheel Alignment	Rear Wheel Alignment

Compatible Vehicles

Select any of the below vehicles to get detailed specifications on how this product interacts with your car. Including fitting positions, time and other vehicle specific information.

Video

Shipping & Returns

Shipping Times

You can use the shipping calculator to find your shipping costs. The shipping calculator will also show all shipping prices.

Returns

We guarantee the fitment and quality of our products, but if you choose to return an item, we offer a generous 60 day returns policy. See our returns policy here.

Warranty

All products sold by Whiteline are covered by a national warranty. The product's warranty is subject to conditions from the date of purchase, unless otherwise stated on the item.

Warranty claims must meet certain criteria and be sent to Whiteline with a receipt to be eligible for a refund. See full warranty claim criteria here.