Hey guys! Thinking about turning your 2015 Subaru WRX into a rally-ready beast? You've come to the right place! Upgrading the suspension is one of the most crucial steps in transforming your WRX into a true rally machine. A well-chosen rally suspension not only enhances the car's handling and performance on challenging terrains but also significantly improves its durability and driver confidence. In this comprehensive guide, we'll dive deep into the world of rally suspensions for the 2015 WRX, exploring the key components, factors to consider, and some top-notch upgrade options. Let's get started!

Why Upgrade Your 2015 WRX Suspension for Rally?

Before we jump into the specifics, let's quickly discuss why upgrading your suspension is essential if you're serious about rallying your 2015 WRX. The stock suspension on the WRX is designed for street use, which means it's a compromise between comfort and performance. While it's perfectly adequate for daily driving, it's not built to handle the extreme demands of rally racing.

Here's why you should consider a rally suspension upgrade:

• Improved Handling and Control: Rally stages are notoriously unpredictable, with surfaces ranging from gravel and dirt to mud and tarmac. A rally-spec suspension provides increased wheel travel, allowing your WRX to soak up bumps and maintain contact with the ground, resulting in improved handling and control. This is crucial for maintaining speed and stability on challenging terrains.
• Enhanced Durability: The stock suspension components are not designed to withstand the constant pounding and stress of rally racing. Upgrading to stronger, more robust components will significantly reduce the risk of damage and ensure your WRX can handle the rigors of competition. Think of it as investing in peace of mind – fewer breakdowns mean more time on the stages!
• Increased Ride Height: Rally cars often need increased ride height to clear obstacles and navigate rough terrain. A rally suspension typically includes longer springs and struts, which lift the car and provide more ground clearance. This can be the difference between gliding over a rock and getting stuck on it.
• Adjustability: Many rally suspension systems offer adjustable dampers, allowing you to fine-tune the suspension's performance to match different road conditions and driving styles. This level of customization is invaluable for optimizing your car's performance on various rally stages.

Key Components of a Rally Suspension

Okay, so you're convinced that a suspension upgrade is the way to go. But what exactly does a rally suspension consist of? Let's break down the key components:

1. Struts and Shocks

The struts and shocks are the heart of any suspension system. They control the movement of the wheels and keep the tires in contact with the ground. Rally-spec struts and shocks are designed to be much more robust and capable than their stock counterparts. They typically feature:

• Increased damping force: This helps to control body roll and prevent the car from bottoming out on large bumps.
• Longer travel: This allows the wheels to move further up and down, absorbing impacts and maintaining contact with the ground.
• Heavy-duty construction: Rally struts and shocks are built to withstand the extreme stresses of rally racing.
• Adjustability: Many rally struts and shocks offer adjustable damping, allowing you to fine-tune the suspension's performance.

2. Springs

The springs support the weight of the car and determine its ride height. Rally springs are typically stiffer and longer than stock springs, providing increased ride height and preventing the car from bottoming out. The spring rate is a crucial factor to consider when choosing rally springs, as it affects the car's handling and ride quality.

3. Top Mounts

Top mounts connect the struts to the car's chassis. Rally top mounts are often made from stronger materials than stock mounts and may include features like camber adjustment, which allows you to fine-tune the car's alignment for optimal handling.

4. Control Arms and Bushings

Control arms connect the wheels to the chassis, while bushings are rubber or polyurethane components that cushion the connection points. Rally control arms are often made from stronger materials and may feature adjustable lengths, while rally bushings are typically stiffer than stock bushings, improving handling and reducing unwanted movement. Upgrading these components can significantly improve the car's stability and responsiveness.

5. Sway Bars

Sway bars (also known as anti-roll bars) connect the left and right wheels and help to reduce body roll during cornering. Rally sway bars are typically stiffer than stock sway bars, which further improves handling. However, it's important to choose the right sway bar stiffness, as too much stiffness can reduce traction.

Factors to Consider When Choosing a Rally Suspension for Your 2015 WRX

Alright, now that we've covered the key components, let's talk about the factors you should consider when choosing a rally suspension for your 2015 WRX. This isn't a one-size-fits-all situation, so it's important to think carefully about your specific needs and goals.

1. Intended Use

How will you be using your WRX? Will it be a dedicated rally car, or will it also be used for daily driving? If it's a dedicated rally car, you can prioritize performance over comfort. But if it's a dual-purpose vehicle, you'll need to find a suspension that offers a good balance of both. Think about the types of surfaces you'll be driving on most often – gravel, dirt, tarmac, or a mix? This will influence your choice of spring rates and damping settings.

2. Budget

Rally suspensions can range in price from a few hundred dollars to several thousand. It's important to set a budget and stick to it. Keep in mind that you'll also need to factor in the cost of installation. While it might be tempting to go for the cheapest option, remember that you often get what you pay for. Investing in a quality suspension system is crucial for both performance and safety.

3. Level of Adjustability

Do you want a suspension that's easily adjustable, or are you happy with a fixed setup? Adjustable suspensions allow you to fine-tune the car's handling to match different conditions and driving styles. However, they also require more knowledge and experience to set up properly. If you're new to rally, a fixed setup might be a better starting point.

4. Brand Reputation and Reviews

Do your research and choose a reputable brand with a proven track record. Read reviews from other WRX owners and rally drivers to get an idea of the suspension's performance and reliability. Online forums and social media groups can be great resources for gathering information and getting recommendations.

5. Installation

Are you planning to install the suspension yourself, or will you be taking it to a professional? If you're not comfortable working on cars, it's best to leave the installation to a qualified mechanic. Improper installation can lead to poor performance and even safety issues.

Top Rally Suspension Upgrade Options for the 2015 Subaru WRX

Now, let's take a look at some specific rally suspension upgrade options for your 2015 WRX. These are just a few of the many options available, but they represent a good range of price points and performance levels.

1. King Springs and KYB Struts

A popular choice for those looking for a balance of performance and affordability. King Springs offer increased ride height and improved handling, while KYB struts provide reliable damping. This combination is a great option for a dual-purpose WRX that sees both street and rally use. It's a solid upgrade that won't break the bank.

2. Feal Suspension 441 Road Race/Rally Coilovers

Feal Suspension is a well-respected brand in the rally world, and their 441 coilovers are a popular choice for serious competitors. These coilovers offer adjustable damping and ride height, allowing you to fine-tune the suspension to your exact needs. They're a fantastic option for those who want maximum performance and adjustability.

3. Bilstein B6 Struts and RalliTEK Springs

Bilstein is another renowned name in suspension technology, and their B6 struts are known for their excellent damping and durability. Paired with RalliTEK springs, this combination provides a significant upgrade over the stock suspension. It's a great option for those who want a high-quality, reliable setup.

4. Ohlins Road & Track Coilovers

Ohlins is a top-tier suspension manufacturer, and their Road & Track coilovers are considered by many to be the best on the market. These coilovers offer exceptional performance and adjustability, but they come at a premium price. If you're looking for the ultimate in rally suspension technology and have the budget for it, Ohlins is the way to go.

5. BC Racing BR Series Coilovers

BC Racing offers a range of coilovers for the WRX, including their popular BR Series. These coilovers offer adjustable damping and ride height at a competitive price point. They're a good option for those who want an adjustable suspension without breaking the bank.

Installation Tips and Considerations

Before you start wrenching on your WRX, here are a few installation tips and considerations to keep in mind:

• Gather the necessary tools and equipment. You'll need a good set of wrenches, sockets, a torque wrench, and potentially a spring compressor (depending on the suspension setup). Having the right tools will make the job much easier and safer.
• Follow the manufacturer's instructions carefully. Each suspension system is different, so it's crucial to follow the instructions provided by the manufacturer. Don't try to cut corners or skip steps – this could lead to problems down the road.
• Torque all fasteners to the correct specifications. Using a torque wrench is essential for ensuring that all fasteners are properly tightened. Over-tightening can damage components, while under-tightening can lead to loose connections and safety issues.
• Get a professional alignment after installation. After installing a new suspension, it's crucial to get a professional alignment. This will ensure that your car handles properly and prevent premature tire wear. A proper alignment is a critical step in maximizing the performance of your new suspension.
• Consider upgrading other components at the same time. While you're upgrading the suspension, it might be a good time to consider upgrading other components like control arms, bushings, and sway bars. This can provide a more comprehensive performance upgrade and ensure that all components work well together.

Maintaining Your Rally Suspension

Once you've installed your new rally suspension, it's important to maintain it properly to ensure its longevity and performance. Here are a few maintenance tips:

• Regularly inspect the suspension components for damage. Check for leaks, cracks, and worn bushings. Catching problems early can prevent them from escalating into more serious issues.
• Clean the suspension components regularly. Dirt and grime can damage the suspension components over time. Regular cleaning will help to keep them in good condition.
• Rebuild or replace the struts and shocks as needed. The struts and shocks will eventually wear out and need to be rebuilt or replaced. The frequency of this depends on how hard you're driving the car, but it's generally recommended to rebuild or replace them every few years.
• Check the alignment periodically. Even with proper installation, the alignment can drift over time due to impacts and wear. Regular alignment checks will help to maintain optimal handling and tire wear.

Conclusion

So, there you have it – a comprehensive guide to upgrading your 2015 Subaru WRX suspension for rally! As you've learned, a quality rally suspension is a game-changer, offering improved handling, durability, and adjustability for tackling challenging terrains. Remember to carefully consider your needs, budget, and driving style when making your choice, and don't hesitate to seek advice from experienced rally drivers or suspension specialists.

By investing in the right suspension upgrades and maintaining them properly, you'll be well on your way to transforming your 2015 WRX into a rally-ready machine that's both fun to drive and capable of conquering any stage. Now get out there and hit the dirt! Happy rallying, guys!