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The Subaru WRX is a popular choice among car enthusiasts, especially those looking to upgrade their vehicles for high horsepower. While many focus on engine modifications, upgrading the transmission and drivetrain is equally crucial for maximizing performance and reliability. In this article, we will explore the essential upgrades needed for WRX builds aimed at achieving high horsepower.
Understanding the Importance of Transmission and Drivetrain Upgrades
High-horsepower builds place significant stress on the vehicle’s transmission and drivetrain. Without appropriate upgrades, you risk damaging these components, leading to costly repairs and downtime. Upgrading these systems ensures that your WRX can handle increased power while maintaining performance and safety.
Key Components to Upgrade
- Transmission
- Clutch
- Differential
- Driveshaft
- Axles
Transmission Upgrades
The transmission is the heart of your WRX’s drivetrain. For high-horsepower builds, consider the following upgrades:
- Short-throw shifter: Provides quicker gear changes.
- Upgraded transmission cooler: Helps manage heat during high-performance driving.
- Stronger gearsets: Designed to handle increased torque and horsepower.
Clutch Upgrades
A high-performance clutch is essential for transferring power effectively. When upgrading your clutch, consider:
- Stage 2 or 3 clutch kits: Designed for higher horsepower applications.
- Lightweight flywheel: Reduces rotational mass for quicker revs.
- Clutch master cylinder upgrade: Improves clutch pedal feel and engagement.
Differential Upgrades
The differential plays a crucial role in managing power distribution to the wheels. For high-horsepower WRX builds, consider:
- Limited-slip differentials (LSD): Improve traction during acceleration.
- Upgraded ring and pinion gears: Enhance durability and performance.
- Adjustable differentials: Allow tuning for specific driving conditions.
Driveshaft Upgrades
The driveshaft connects the transmission to the differential, making it a critical component in high-horsepower builds. Consider these upgrades:
- Lightweight driveshaft: Reduces weight and rotational inertia.
- High-strength materials: Ensures durability under increased power.
- One-piece driveshaft: Reduces flex and improves power delivery.
Axle Upgrades
Upgrading the axles is vital for handling the increased power and torque of high-horsepower builds. Key considerations include:
- Heavy-duty axles: Designed to withstand higher stress levels.
- Aftermarket CV joints: Improve reliability and performance.
- Adjustable axle lengths: Allow for fine-tuning suspension setups.
Installation Considerations
When upgrading your WRX’s transmission and drivetrain, proper installation is crucial. Consider these tips:
- Professional installation: Hiring experienced technicians can prevent future issues.
- Follow manufacturer guidelines: Ensure compatibility and performance.
- Regular maintenance: Keep components in good condition to prolong their lifespan.
Conclusion
Upgrading the transmission and drivetrain of your WRX is essential for achieving high horsepower and maintaining performance. By focusing on key components such as the transmission, clutch, differential, driveshaft, and axles, you can ensure that your vehicle can handle the demands of increased power. Remember to consider professional installation and regular maintenance to keep your upgrades functioning optimally.