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.

KCA380

Front Lower Control Arm - Inner Rear Bushing Double Offset Caster Kit to Suit Mazda RX-7 FC Series 4 & 5

Front Lower Control Arm - Inner Rear Bushing Double Offset Caster Kit to Suit Mazda RX-7 FC Series 4 & 5

Performance Alignment - adds +1.0deg caster

Item Price

$69.45

SKU	KCA380
Warranty	3 years warranty or up to 60,000km
Installation Time	2.5 Hours
Fitting Position	Front Axle

Select your car to check fitment.

Pre-Order

Available for Preorder. Stock due on 9/5/2026.

Description

Benefit Note:
Whiteline caster kits are designed to improve cornering grip and vehicle straight line stability. This kit is supplied with dual offset bushings to give greater steering feel, more steering weight, greater precision all through increased static caster and dynamic negative camber gain. In addition, Whiteline bushings provide improved braking performance, and less under load alignment change.

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

Specifications

Bushing Design Dimensions (mm)

More Information
Bush Type	QTY	OD (A)	ID (B)	Length (C)	FL (D)	FLOD (E)	C/Tube Qty	C/Tube Size	Similar Bushings
4	1	55	31	63.2	7.5	61			Click Here
4	1	55	31	63.2	7.5	61			Click Here

Bush Type	4	4
QTY	1	1
OD (A)	55	55
ID (B)	31	31
Length (C)	63.2	63.2
FL (D)	7.5	7.5
FLOD (E)	61	61
C/Tube Qty
C/Tube Size
Similar Bushings	Click Here	Click Here

Looking for that hard-to-find part? Start your search here Whiteline Bushing Type & Size Register

Packaged Weight and Dimensions

More Information
Units	Weight	Length	Width	Height
cm/kg	0.5kg	10cm	26cm	16cm
in/lbs	1.1lbs	3.94"	10.24"	6.3"

Units	cm/kg	in/lbs
Weight	0.5kg	1.1lbs
Length	10cm	3.94"
Width	26cm	10.24"
Height	16cm	6.3"

Misc. Product Information

More Information
SKU	KCA380
Components Per	2 Bushings
Kits Required	1
Sub brand	Performance
Product Note	Ensures long-lasting durability, matter matter the purpose; the perfect, complete upgrade. Includes: 2 Bushings
EAN	9319924342846

Installation & Fitment Guide

More Information
Install Guide	Downloads
Installation Time	2.5 Hours
Installation Difficulty	Suspension Specialist recommended. Use our Click & Fit service.
Wheel Alignment Required	Yes
Recommend Wheel Alignment	Front 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.

Shipping & Returns

Product Stock

All stock is stored in our warehouses. Want your parts installed? Select Click & Fit at checkout.

Delivery Options

Click & Fit – Get your product delivered and installed by experts for a special fitted price. We'll handle everything for you.
Free Pickup – Collect your order from your nearest Fulcrum outlet. We'll send you tracking updates via text and email.
Deliver to Door – Have your order shipped directly to your address with tracking updates.

Shipping

FREE shipping to metro areas (excl. WA, TAS & NT).
Free shipping eligibility is based on location density and may change.
Express and free shipping both follow the same order processing times; the difference is transit time.
See our shipping policy for full details.

Returns

We offer a 60-day return policy if you need to return an item. See our returns policy.

Warranty

All products are covered by a national warranty. Claims require proof of purchase and must meet criteria. See our warranty details.

Click & Fit

Select “Click & Fit” as a delivery method during the checkout process and you will be given a special fitted price to have both the product delivered and installed. A suspension expert will be assigned to your order, who will organise everything and will help you every step of the way. You can sit back and relax, knowing that your car is going to be looked after by suspension experts.

Your assigned suspension expert will confirm all the details for your booking. Your parts will then be delivered to your closest Whiteline workshop and an installation date will be booked based on your preference. You then bring your car on the booking date and Whiteline will manage the installation for you.

Installation includes full product installation by a qualified suspension technician, a full wheel alignment, a complete suspension check, a visual brake inspection, and a complete report. We also offer a complimentary 1000km check-up service, which includes a suspension check and any retention work, your alignment and tyre wear will also be checked. If we find that anything needs to be amended during our 1000km check, we will carry out this work free of charge. This includes a wheel alignment, if required.

Throughout your order, installation, and service. You will be kept up to date every step of the way. Whiteline offers this service to ensure you get the best possible experience.