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.

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

Description

Whiteline caster kits are designed to improve cornering grip and vehicle straight line stability through increased static caster and dynamic negative camber gain. In addition, synthetic elastomer bushings provide improved steering feedback and braking performance.

*Tax is calculated at checkout based on local regions tax laws. For international orders, tax 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

Misc. Product Information

More Information
SKU	KCA380
Components Per	2 Bushings
Kits Required	1
Kit Contents	2 Bushings
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	Tricky installation may take longer then you think if you are not experienced.
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

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 products 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.