Description
The HKS LEGAMAX Sports Exhaust for the Toyota GR Corolla is engineered to deliver performance, style, and an exhilarating driving experience. This exhaust system enhances both sound and aesthetics, offering a significant reduction in exhaust resistance and improved power and torque across the RPM range.
Key Features
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Valve-less, Dual-Tip Design:
- Features a valve-less system with dual titanium-tipped tailpipes.
- The slash-cut φ119mm tips create a bold, sporty appearance.
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Optimized Bracket Design:
- Includes a laser-engraved HKS logo on the center bracket, visible through the bumper notch.
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EXHAUST ERROR CANCELER:
- Prevents error codes associated with the removal of the factory exhaust valve, ensuring smooth operation.
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Improved Sound and Flow:
- Deep bass sound at low RPMs and a robust sporty tone at high RPMs.
- No muffled noise in the mid-range, delivering a seamless auditory experience throughout the rev range.
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Enhanced Performance:
- Reduces exhaust resistance by up to 68% compared to stock (valve-closed) systems.
- Improved power and torque outputs in the mid-range RPMs.
Specifications
- Product Code: hks31021-AT009
- Certification No.: JQR30232128
- Material: SUS304 (high-grade stainless steel)
- Outer Tail Diameter: φ119mm (dual tips)
- Main Pipe Diameter: φ74.7→φ60.5×2
- Noise Levels:
- Factory: 88/88dB (Idle: 70/70dB)
- HKS: 91/90dB (Idle: 71/70dB)
- Ground Clearance: 135mm
Performance Gains
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Maximum Output:
- HKS: 221.6kW @ 6600rpm
- Stock: 221.2kW @ 6600rpm
- Increase: Up to 4.0%
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Maximum Torque:
- HKS: 431.0Nm @ 4250rpm
- Stock: 414.8Nm @ 4300rpm
- Increase: Up to 5.2%
Advantages Over Stock
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Significant Reduction in Exhaust Resistance:
- Valve-closed stock: 9.3kPa
- Valve-open stock: 5.1kPa
- HKS LEGAMAX Sports: 3.0kPa
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Consistent Power Delivery:
- Valve-less design ensures optimal flow without fluctuations caused by valve actuation.
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Refined Sound Engineering:
- Delivers a sporty exhaust note while maintaining a comfortable cabin experience.
Kit Contents
- LEGAMAX Sports Muffler Assembly
- Center Bracket with Laser-Engraved HKS Logo
- EXHAUST ERROR CANCELER
- Hardware Kit (bolts, nuts, gaskets)
- Installation Manual
Installation Notes
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EXHAUST ERROR CANCELER:
- Essential to prevent error codes when removing the stock valve.
- Ensures compliance with OBD2 diagnostics and prevents warning lights.
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Professional Installation Recommended:
- Precise alignment and secure mounting are required to ensure optimal performance.
Summary
The HKS LEGAMAX Sports Exhaust for the GR Corolla is a must-have upgrade for enthusiasts seeking enhanced performance, aesthetics, and sound quality. By eliminating the stock exhaust valve and optimizing flow, this system significantly improves mid-range power and torque while delivering an engaging exhaust note. The included EXHAUST ERROR CANCELER ensures compatibility with the vehicle's electronics, making this a seamless and worry-free upgrade.
