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The Subaru WRX is known for its performance and rally heritage. However, to truly unlock its potential, especially when aiming for over 350 horsepower, differential upgrades are essential. In this article, we will explore the best differential upgrades for the Subaru WRX that can help achieve significant power gains while keeping installation costs around $800.
Understanding Differentials
A differential is a critical component of your vehicle’s drivetrain. It allows the wheels to rotate at different speeds, especially during turns. Upgrading your differential can improve traction, handling, and overall performance, especially in high-power applications.
Types of Differentials
There are several types of differentials available for the Subaru WRX, each with its advantages and disadvantages:
- Open Differential: The standard option, providing basic functionality.
- Limited Slip Differential (LSD): Offers improved traction by distributing power to the wheel with the most grip.
- Locking Differential: Allows for complete locking of both wheels for maximum traction in extreme conditions.
- Torque Vectoring Differential: Provides dynamic power distribution between wheels for superior handling.
Top Differential Upgrades for Subaru WRX
Here are some of the best differential upgrades that can help you achieve over 350 horsepower while maintaining reasonable installation costs:
1. Cusco Type RS Limited Slip Differential
The Cusco Type RS LSD is a popular choice among WRX enthusiasts. It features a 1.5-way design, which provides excellent balance between street and track performance. This differential can significantly improve traction during acceleration and cornering.
2. STI Rear Differential
The Subaru Tecnica International (STI) rear differential is designed for performance. It offers a more aggressive torque distribution, which enhances grip and stability. Installing an STI rear differential can be a straightforward upgrade for those looking to enhance their WRX’s capabilities.
3. Kaaz 1.5-Way Limited Slip Differential
The Kaaz 1.5-way LSD is another excellent option for WRX owners. It provides a good balance of street and race performance, allowing for better handling and acceleration. This differential is known for its durability and reliability under high-stress conditions.
4. Wavetrac Differential
The Wavetrac differential is unique due to its design that allows for improved performance in low traction situations. It automatically engages when needed, making it a versatile choice for both street and track use. This differential can provide added confidence during aggressive driving.
Installation Costs and Considerations
Most differential upgrades for the Subaru WRX can be installed for around $800, depending on the specific model and labor costs. It is essential to consider:
- Labor Costs: Professional installation is recommended for complex differentials.
- Compatibility: Ensure the differential is compatible with your specific WRX model and year.
- Performance Goals: Choose a differential that aligns with your driving style and performance objectives.
Benefits of Upgrading Your Differential
Upgrading your Subaru WRX’s differential can lead to several benefits, including:
- Improved Traction: Better power distribution leads to enhanced grip on the road.
- Enhanced Handling: A more responsive differential can improve cornering performance.
- Increased Stability: A well-matched differential can help maintain stability during aggressive maneuvers.
- Better Acceleration: Reduced wheel slip allows for quicker take-offs and better overall speed.
Conclusion
Upgrading the differential in your Subaru WRX is a crucial step in maximizing performance, especially when targeting over 350 horsepower. With several options available, including the Cusco Type RS, STI Rear Differential, Kaaz LSD, and Wavetrac, you can find the perfect fit for your driving needs. With installation costs around $800, these upgrades offer an excellent return on investment for any WRX enthusiast.