
XForce | Tri-Y Performance Exhaust Header | Mazda MX5 NB 1.8L 1998–2005 | HS-H9918
XForce Tri-Y Performance Exhaust Header - Mazda MX5 NB 1.8L - HS-H9918
Enhance the performance and engine efficiency of your Mazda MX5 NB with the XForce Tri-Y Header. This high-quality exhaust manifold is engineered to optimize exhaust scavenging through a specialized 4-2-1 Tri-Y design, providing a noticeable improvement in mid-range power and throttle response. Constructed from premium 304 stainless steel, these headers are built to withstand high temperatures and resist corrosion while offering a significant upgrade over the restrictive factory manifold. Whether you are hitting the track or enjoying a spirited Sunday drive, XForce headers provide the performance edge your MX5 deserves.
What's in the Box?
- 1x XForce 304 Stainless Steel Tri-Y Header Manifold
- Installation Gaskets
Features:
This product offers the following high-performance features:
- 4-2-1 Tri-Y Design: Optimized primary and secondary pipe lengths to increase torque and broaden the power band.
- Premium 304 Stainless Steel: High-grade material choice for superior longevity, heat resistance, and a polished performance look.
- Improved Scavenging: Reduces exhaust backpressure, allowing the 1.8L engine to breathe more freely.
- Mandrel-Bent Tubing: Ensures consistent pipe diameter throughout bends for smooth, laminar exhaust gas flow.
Specifications:
- Make: Mazda
- Model: MX5 (NB)
- Engine: 1.8L BP-ZE / BP-VE
- Part Number: HS-H9918
- Material: 304 Stainless Steel
- Design: 4-2-1 Tri-Y
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
- Fitment Note: Designed primarily for manual transmission vehicles; automatic models will require modifications for successful fitment.
- Compliance Note: Requires an EGR valve delete kit for successful fitment on Australian-delivered vehicles.
- Engine Note: Fits 1998–2005 1.8L models only.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| MAZDA | ||||||||
| MAZDA | MX5 | 1998 | 2000 | Convertible | NB Series 1 | 1.8L I4 | Manual | RWD |
| MAZDA | MX5 | 2000 | 2005 | Convertible | NB Series 2/3 | 1.8L I4 (VVT) | Manual | RWD |
| Product Type | Warranty Period |
|---|---|
| 304 & 201 Stainless Steel Exhaust Systems | 60 Months |
| Accessories | 12 Months |
| Catalytic Converters | 12 Months |
| Electronic Products (Including SmartBox) | 12 Months |
| Mild Steel & 409 Stainless Steel Exhaust Systems | 24 Months |
| Mild Steel Headers | 12 Months |
| Stainless Steel Headers | 24 Months |
| Universal 304 Stainless Steel Mufflers | 24 Months |
| Universal Mild Steel & 409 Stainless Steel Mufflers | 12 Months |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
XForce Tri-Y Performance Exhaust Header - Mazda MX5 NB 1.8L - HS-H9918
Enhance the performance and engine efficiency of your Mazda MX5 NB with the XForce Tri-Y Header. This high-quality exhaust manifold is engineered to optimize exhaust scavenging through a specialized 4-2-1 Tri-Y design, providing a noticeable improvement in mid-range power and throttle response. Constructed from premium 304 stainless steel, these headers are built to withstand high temperatures and resist corrosion while offering a significant upgrade over the restrictive factory manifold. Whether you are hitting the track or enjoying a spirited Sunday drive, XForce headers provide the performance edge your MX5 deserves.
What's in the Box?
- 1x XForce 304 Stainless Steel Tri-Y Header Manifold
- Installation Gaskets
Features:
This product offers the following high-performance features:
- 4-2-1 Tri-Y Design: Optimized primary and secondary pipe lengths to increase torque and broaden the power band.
- Premium 304 Stainless Steel: High-grade material choice for superior longevity, heat resistance, and a polished performance look.
- Improved Scavenging: Reduces exhaust backpressure, allowing the 1.8L engine to breathe more freely.
- Mandrel-Bent Tubing: Ensures consistent pipe diameter throughout bends for smooth, laminar exhaust gas flow.
Specifications:
- Make: Mazda
- Model: MX5 (NB)
- Engine: 1.8L BP-ZE / BP-VE
- Part Number: HS-H9918
- Material: 304 Stainless Steel
- Design: 4-2-1 Tri-Y
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
- Fitment Note: Designed primarily for manual transmission vehicles; automatic models will require modifications for successful fitment.
- Compliance Note: Requires an EGR valve delete kit for successful fitment on Australian-delivered vehicles.
- Engine Note: Fits 1998–2005 1.8L models only.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| MAZDA | ||||||||
| MAZDA | MX5 | 1998 | 2000 | Convertible | NB Series 1 | 1.8L I4 | Manual | RWD |
| MAZDA | MX5 | 2000 | 2005 | Convertible | NB Series 2/3 | 1.8L I4 (VVT) | Manual | RWD |
| Product Type | Warranty Period |
|---|---|
| 304 & 201 Stainless Steel Exhaust Systems | 60 Months |
| Accessories | 12 Months |
| Catalytic Converters | 12 Months |
| Electronic Products (Including SmartBox) | 12 Months |
| Mild Steel & 409 Stainless Steel Exhaust Systems | 24 Months |
| Mild Steel Headers | 12 Months |
| Stainless Steel Headers | 24 Months |
| Universal 304 Stainless Steel Mufflers | 24 Months |
| Universal Mild Steel & 409 Stainless Steel Mufflers | 12 Months |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.











