J'S RACING 4-2-1 STAINLESS EX MANI FOR HONDA CIVIC EG6 B16A XA-H3
The J’S Racing XA-H3 4-2-1 Stainless Exhaust Manifold is one of the most respected naturally aspirated headers for the EG6 Civic SiR.
Unlike many 4-1 race headers that focus mainly on peak horsepower, the XA-H3 uses a 4-2-1 layout optimized for mid-range and top-end torque, making the car faster and more responsive in real-world driving and circuit use.
Performance Characteristics
- Stronger low-to-mid RPM torque than typical 4-1 headers.
- Improved throttle response when exiting corners.
- Maintains good power up to VTEC and redline.
- Handmade stainless construction with lightweight tubing.
- Developed through extensive dyno and track testing by J’S Racing.
Engine: B16A
1. Designed with serious consideration on torque that support the horsepower and overall performance.
2. Improves torque response over the entire range from low/ medium speed to high rpm.
3. Material: SUS304 stainless steel 4-2-1 type pipe diameter 40-45-50φ.
4. Welds may damage due to engine vibration caused by deterioration of the engine mount over time.
5. Repairs are available at actual cost by J’S Racing.
**Only the head side gasket is included.
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