Hey guys, if you're a 350Z enthusiast looking to dial in your suspension and get the most out of your ride, you've probably heard about the magic of aftermarket parts. One of the most impactful upgrades you can make is swapping out your stock front upper control arms (FUCA) for a set of high-performance units, and that's where SPL parts come into play. SPL Parts are known for their quality and engineering, making them a popular choice for 350Z owners. Let's dive deep into why upgrading to SPL front upper control arms is a game-changer and how it can transform your car's handling.

Why Upgrade to SPL Front Upper Control Arms?

So, why bother replacing your stock front upper control arms with SPL parts? Well, the factory arms, while functional, are designed with compromises in mind. They're built for a wide range of driving conditions and, frankly, aren't optimized for performance. When you start modifying your 350Z for track use, spirited driving, or even just a more aggressive stance, the limitations of the stock arms become apparent. That's where SPL front upper control arms come in. These are precision-engineered to provide a host of benefits that directly translate to improved performance and adjustability.

Enhanced Suspension Geometry

One of the primary benefits of SPL front upper control arms is the ability to fine-tune your suspension geometry. SPL arms typically offer a wider range of adjustability compared to the stock units. This means you can precisely set your camber, which is the angle of your wheels relative to the vertical. Why is camber so important? Well, it significantly affects how your tires grip the road. With adjustable SPL arms, you can dial in the perfect camber settings for your driving style and the type of tires you're running. For example, if you're primarily focused on track days, you might want to run more negative camber to maximize grip during cornering. This helps the tire contact patch stay flat on the road, increasing the contact area during cornering. Conversely, if you're looking for a more aggressive street stance, you can use the adjustment to get a look you like while still maintaining some level of handling performance.

Improved Handling and Performance

With the ability to adjust camber comes improved handling and overall performance. By optimizing your suspension geometry, SPL front upper control arms allow your tires to work more effectively. This results in sharper turn-in, reduced body roll, and increased grip, ultimately giving you more confidence behind the wheel. The improved handling also translates to better lap times on the track and more enjoyment during spirited driving. You'll feel a noticeable difference in how your 350Z responds to your inputs, making it feel more planted and connected to the road. This is especially true if you are using high-performance tires, which can make the adjustment even more significant.

Durability and Reliability

SPL parts are built to last. They're typically constructed from high-quality materials such as aircraft-grade aluminum or chromoly steel, which offer superior strength and durability compared to the stock arms. This means they can withstand the stresses of aggressive driving and track use without bending or breaking. SPL front upper control arms often use spherical bearings (also known as rod ends) instead of the rubber bushings found in the stock arms. Spherical bearings provide a more direct and precise feel, reducing unwanted play in the suspension and improving overall handling. They also tend to last longer than rubber bushings, reducing the need for frequent replacements. So, you're not only getting improved performance but also increased reliability and peace of mind.

Key Features of SPL Front Upper Control Arms

Let's get into the nitty-gritty of what makes SPL front upper control arms stand out from the crowd. These components are packed with features designed to enhance performance and provide a superior driving experience.

Adjustable Camber

As mentioned earlier, the ability to adjust camber is a defining feature of SPL arms. This adjustability allows you to fine-tune your suspension geometry to suit your driving style, tire choice, and track conditions. SPL arms typically offer a wide range of camber adjustment, allowing you to dial in everything from mild street settings to aggressive track setups. This level of adjustability is simply not possible with the stock arms, making SPL a must-have for serious performance enthusiasts.

High-Quality Materials and Construction

SPL is known for using only the best materials in their parts. Their front upper control arms are typically made from aircraft-grade aluminum or chromoly steel, which provide exceptional strength and durability. These materials are chosen for their ability to withstand the stresses of high-performance driving without bending or breaking. The arms are also often anodized or powder-coated for corrosion resistance and a sleek, professional look.

Spherical Bearings

Instead of rubber bushings, SPL front upper control arms often utilize spherical bearings (rod ends). These bearings offer several advantages over rubber bushings, including reduced deflection, improved precision, and increased durability. Spherical bearings allow for more precise control of suspension movement, resulting in sharper handling and a more direct feel. They also tend to last longer than rubber bushings, reducing the need for replacements and saving you money in the long run.

Easy Installation

While installing aftermarket suspension components can seem daunting, SPL front upper control arms are generally designed for relatively easy installation. They are often a direct bolt-on replacement for the stock arms, meaning you don't need to make any modifications to your car. However, it's always recommended to have a professional mechanic install these components, especially if you're not familiar with suspension work. This will ensure that the arms are installed correctly and that your suspension is properly aligned after installation.

Installation Guide

Alright, let's talk about how to get these bad boys installed on your 350Z. Disclaimer: This is a general overview, and you should always consult the manufacturer's instructions and/or a qualified mechanic for the most accurate and safe installation process. Installation can be tricky, so make sure you are confident in your abilities or seek professional help.

Tools You'll Need

Before you start, gather the necessary tools. You'll typically need:

• Jack and jack stands
• Wheel chocks
• Wrench set
• Socket set
• Torque wrench
• Camber gauge
• Penetrating oil (e.g., PB Blaster)
• Possibly a ball joint separator tool

Step-by-Step Installation

1. Preparation: Safely lift your 350Z and secure it on jack stands. Remove the front wheels.
2. Disassembly: Disconnect any components that may impede removal of the FUCA, such as brake lines and ABS sensors. Use penetrating oil on any stubborn bolts, and remove the stock control arms. Keep track of all bolts and hardware. You will need them.
3. Installation of New Arms: Install the SPL front upper control arms, following the manufacturer's instructions. Torque all bolts to the specified torque. It's really important here! Don't guess. Check the torque specs. Install the ball joint if required.
4. Reassembly: Reattach any components you disconnected, such as the brake lines, ABS sensors, and wheels.
5. Alignment: Take your car to a reputable alignment shop to have your suspension properly aligned. This is crucial for optimal performance and tire wear. The alignment shop will be able to adjust the camber, caster, and toe to your desired specifications.

Maintaining Your SPL Front Upper Control Arms

Once you have your SPL front upper control arms installed, proper maintenance is key to ensuring their longevity and optimal performance. Here's what you need to know:

Regular Inspection

Regularly inspect your front upper control arms for any signs of wear or damage. Check for play in the spherical bearings, cracks in the arms, or any other issues. Pay attention to any unusual noises or handling characteristics, as these could indicate a problem.

Lubrication

Some spherical bearings may require periodic lubrication. Consult the manufacturer's instructions for your specific SPL arms to determine if and how to lubricate the bearings. Use the recommended lubricant to avoid damaging the bearings.

Cleaning

Keep your front upper control arms clean by washing them regularly. Remove any dirt, grime, or road debris that could accumulate and potentially cause damage. You can use a mild soap and water solution to clean the arms.

Re-Torquing

After a period of driving, it's a good idea to re-torque the bolts on your front upper control arms. This will ensure that they remain securely fastened and that your suspension continues to perform optimally. Check the manufacturer's specifications for the correct torque values and tighten the bolts accordingly.

Conclusion: Is SPL Front Upper Control Arms Worth It?

So, are SPL front upper control arms worth the investment for your 350Z? Absolutely, yes! These components offer a significant upgrade in terms of performance, adjustability, and durability. They're a must-have for any 350Z owner looking to get the most out of their car, whether it's for track use, spirited driving, or simply enhancing the car's stance. While they may require some initial investment and installation effort, the benefits far outweigh the costs. By upgrading to SPL front upper control arms, you're investing in a more capable and enjoyable driving experience.

Before you dive in, consider your specific needs and driving goals. Do you want to fine-tune your suspension geometry for maximum grip on the track? Are you looking for a more aggressive stance and improved handling on the street? If you answered yes to any of these questions, then SPL front upper control arms are a fantastic choice. These arms are a great way to transform how your 350Z handles and performs, giving you more confidence and control behind the wheel.

Ready to take your 350Z to the next level? Upgrade to SPL front upper control arms and experience the difference for yourself! You won't regret it.