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Dial In Real Caster Adjustment On Your S-Chassis Or Z32
Lowering your 240SX or 300ZX or adding aggressive camber for track use throws off caster angle, and the factory radius rod bushings give you zero way to correct it. This Whiteline KCA331 caster adjusting kit replaces the front radius rod bushing with an adjustable design, giving you up to 0.75 degrees of caster correction so your alignment shop can actually dial the front end back in.
Key Features
- Adds up to plus or minus 0.75 degrees of front caster adjustment
- Replaces the compliant factory radius rod bushing with a firmer adjustable design
- Improves steering feel and on center stability after lowering or alignment changes
- Durable polyurethane construction resists the wear that leads to factory bushing collapse
- Direct bolt in replacement using the factory radius rod mounting point
- KCA331 shares the same front radius rod design across the S13, S14, and Z32 platforms
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 1989-1994 | Nissan | 240SX | SE |
| 1995-1998 | Nissan | 240SX | SE |
| 1990-1996 | Nissan | 300ZX | Turbo |
Specifications
| Detail | Value |
|---|---|
| Manufacturer | Whiteline |
| MPN | KCA331 |
| UPC | KCA331 |
| Position | Front |
| Adjustment Range | Up to 0.75 Degrees Caster |
| Material | Polyurethane |
| Application | Radius Rod Bushing Kit |
What's Included
- Front adjustable radius rod bushing kit for one side pair
- Required hardware for installation
About Whiteline
Whiteline designs and manufactures suspension components engineered to sharpen handling while preserving daily drivability. Their caster and camber correction kits, control arms, and bushing sets use proprietary synthetic elastomers and precision engineered geometry to correct factory suspension compliance and unlock more consistent, predictable handling.
FAQ
What is the KCA331?The KCA331 is a Whiteline front caster adjusting kit that replaces the factory radius rod bushing on the Nissan 240SX and 300ZX, adding up to 0.75 degrees of caster correction.
Why do I need extra caster adjustment on my 240SX or 300ZX?Lowering the vehicle or making significant camber changes shifts caster outside the factory adjustment range, and this kit gives your alignment technician the range needed to correct it.
Does this kit affect ride quality?The polyurethane bushing is firmer than the factory rubber piece, which slightly sharpens steering feel while remaining suitable for street use.
Do I need an alignment after installing this kit?Yes, since this kit is specifically designed to change caster angle, a full alignment is required after installation to set your desired specification.
Will this kit work with coilovers or a lowering spring setup?Yes, this kit is commonly installed alongside lowering springs or coilovers specifically to correct the caster shift that comes with a lower ride height.
Can I install this kit in my home garage?Yes, most installers with basic hand tools and jack stands can complete this swap, though a proper alignment afterward requires shop equipment.
Does this kit include the radius rod itself?No, this kit includes the replacement adjustable bushing only and reuses your factory radius rod.
Is this kit front or rear specific?This kit is for the front radius rod only and does not include any rear suspension components.
Install Instructions
- Raise and safely support the front of the vehicle on jack stands
- Remove the front radius rod from its chassis and control arm mounting points
- Press out the factory bushing from the radius rod
- Install the new Whiteline adjustable bushing into the radius rod
- Reinstall the radius rod and torque all fasteners to factory specification
- Lower the vehicle and have a professional alignment performed to set caster
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