SKU: 76964580555

XForce | Tri-Y Performance Exhaust Header | Mazda MX5 NB 1.8L 1998–2005 | HS-H9918

Sale price$214.65 Regular price$238.50
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Description

XForce | Tri-Y Performance Exhaust Header | Mazda MX5 NB 1.8L 1998–2005 | HS-H9918XForce 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

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:

Vehicle Applications for HS-H9918
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

 

Warranty Information
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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 76964580555

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Jason
Carnegie, US
★★★★★ 5
Looks nice, easy to install
Color: Rustic Brown, Number Of Shelves: 2, Size: 22in
This shelf is lightweight, looks nice, and was easy to install. It comes with a little level to help you install it properly. There are plenty of mounting holes to choose from, so it is easy to screw it directly into a stud, or to just use holes that are convenient for you. It comes with a plethora of mounting hardware. I mounted mine a bit high up and chose to mount it upside down so that I wouldn't see the three screws that hold the shelf to the mounting bracket.
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Reviewed in the United States on April 8, 2026
A
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Amazon Customer
Belleville, US
★★★★★ 5
Stylish storage that actually works
Size: 31.5 Inch, Color: Rustic Brown, Size: 31.5 Inch, Color: Rustic Brown
I love this shelving unit so much—it’s both functional and really attractive. We’re currently using it for Lego storage in our playroom, but it still feels elevated and blends nicely with the rest of the room’s decor. It’s a great balance of practical and stylish. The shelves offer plenty of space and the overall size is perfect. It’s also super sturdy, well-made, and was easy to put together. A great option if you need storage but don’t want to sacrifice the look of your space.
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Reviewed in the United States on May 5, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Great for creating open shelving rather than adding cabinetry
I purchased two of the 24 inch shelves to create a coffee nook in my kitchen. They are very high-quality, attractive, were easy to install, and are sturdy. These shelves are a great alternative to having to add cabinetry to store items.
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Reviewed in the United States on December 31, 2025
Verified Purchase
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Bozeman, US
★★★★★ 5
Sturdy and easy to assemble.
Size: 31.5 Inch, Color: Rustic Brown
Remarkably easy to assemble, sturdy, looks great on my wall. My only complaint is that you can't really hang anything off of the top bracket -- the promotional photos show an item hanging from there, but they've used an item with a very strangely shaped handle to make it work. Booo. Still, great little shelf. Happy with it.
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Reviewed in the United States on October 30, 2025
C
Verified Purchase
Cc
Belleville, US
★★★★★ 5
Great Spacesaver and looks good too.
Size: 31.5 Inch, Color: Rustic Brown
Bought this to free up counter space and cupboard space. And it does the job perfectly. Easy to assemble and install, but make sure you have another set of hands nearby cause it could be a little tough to install by yourself.
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Reviewed in the United States on February 19, 2026

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