SKU: 11837078872

1999-2000 Mazda Miata MX5 1.8L 4-2-1 SS 1-5/8 Header XForce HS-9918

Sale price$174.15 Regular price$193.50
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Description

1999-2000 Mazda Miata MX5 1.8L 4-2-1 SS 1-5/8 Header XForce HS-9918Enhance Your Mazda MX 5's Performance with the XForce 4 2 1 Stainless Steel Header Upgrade your 1999 2000 Mazda MX 5 Miata's exhaust system with the XForce 4 2 1 Stainless Steel Header (Part Number: HS 9918). This high quality header is engineered to improve exhaust flow, resulting in enhanced engine performance and a more responsive driving experience. Key Features: Tri Y Design: The 4 2 1 configuration optimizes exhaust scavenging, leading to

Enhance Your Mazda MX-5's Performance with the XForce 4-2-1 Stainless Steel Header

Upgrade your 1999-2000 Mazda MX-5 Miata's exhaust system with the XForce 4-2-1 Stainless Steel Header (Part Number: HS-9918). This high-quality header is engineered to improve exhaust flow, resulting in enhanced engine performance and a more responsive driving experience.

Key Features:

  • Tri-Y Design: The 4-2-1 configuration optimizes exhaust scavenging, leading to increased horsepower and torque across the RPM range.
  • Stainless Steel Construction: Made from durable 304 stainless steel, this header offers excellent corrosion resistance and longevity.
  • Precision Engineering: Mandrel-bent tubing ensures smooth exhaust flow, while CNC-machined flanges provide a secure, leak-free fit.
  • Fuel Type: Gasoline
  • California Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Specifications:

  • Brand: XForce
  • Type: Exhaust Header
  • Items Included: Header, Gaskets, Mounting Hardware
  • Material: 304 Stainless Steel
  • Substrate Material: Stainless Steel
  • Primary Tube Diameter: 1 5/8 inches
  • Header Style: Tri-Y (4-2-1) One-Piece Design
  • Collector Attachment: 2-Bolt Flange
  • Finish: Natural Stainless Steel
  • Features: Mandrel-Bent Tubing, CNC-Machined Flanges, Bolt-On Installation
  • Fuel Type: Gasoline
  • Placement on Vehicle: Front (Engine Bay)
  • Manufacturer Part Number: HS-9918
  • OE/OEM Part Number: HS-9918

Vehicle Compatibility:

This header is designed to fit the following Mazda MX-5 Miata models:

  • 1999-2000 Mazda MX-5 Miata: 1.8L 4-cylinder engine

Note: While some references indicate compatibility with 1998-2005 models, it is recommended to verify fitment for models outside the 1999-2000 range.

Items Included:

  • XForce 4-2-1 Stainless Steel Header (HS-9918)
  • Gaskets
  • Mounting Hardware

Installation Notes:

  • Professional Installation Recommended: Due to the complexity of exhaust system modifications, professional installation is advised to ensure optimal performance and fitment.
  • No Welding Required: Designed for a bolt-on installation using standard hand tools.
  • Complete Kit: Includes all necessary gaskets and mounting hardware for a complete installation.

Upgrade your Mazda MX-5 Miata's exhaust system with the XForce HS-9918 header to experience improved performance, durability, and a more exhilarating driving experience.



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: 11837078872

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Louisville, US
★★★★★ 5
Best pillow I've ever owned
Color: Cut-out White, Size: Queen
While the pillow looks anemic when it first comes out of its packaging, it puffs/firms up beautifully after time in the dryer. I haven't had any odor issues. I'm mostly a side sleeper and at first I thought there wasn't enough of the extra fill, so I put it all in. I've ended up needing to take at least half back out to keep my head at the correct angle. While this can fit in a standard pillow case, it just barely fits and keeps coming out - at least at my fill level. Queen pillow cases are much better. This is so much more comfortable than any of my previous pillows. I don't need to stack multiple pillows to get the right support. I'm no longer waking up with neck or shoulder or arm pain. I'm recommending it to pretty much everyone and I've purchased a second pillow to keep at my parents for when I visit!
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Reviewed in the United States on May 6, 2026
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William
Omaha, US
★★★★★ 5
So nice your wife will steal it for herself
Color: Original White, Size: Queen
This, this is the god of all pillows I’ve ever purchased. It’s the perfect balance of firm and soft and it’s easily adjustable using the added filler. I’m a side sleeper so having a primary pillow is a must. Combined with a decent secondary pillow this one provides a perfect amount of support. This pillow is so nice, my wife ‘borrowed it’.
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Reviewed in the United States on May 27, 2026
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Payton
Omaha, US
★★★★★ 5
Favorite pillow!!
Color: Original White, Size: Queen
Absolutely love this pillow! Bought my husband one a year ago after he was waking up with neck pain. Just recently bought myself one, we both love them! Very comfy and comes with a bag of extra foam to add/remove from the pillow. The zipper on the side of the pillow cover is hidden but durable. We take it with us wherever we go, and always sleep so good.
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Monica
Natrona Heights, US
★★★★★ 5
Super comfortable!!!!
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
They are super soft and large; they come vacuum-sealed and expand very quickly. They aren't heavy, and they are incredible for sleeping and watching TV in bed.
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Beatriz Cabrera Portuondo
Alexandria, US
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Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
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