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Description
1990-1993 Mazda Miata MX5 1.6L 4-2-1 1"5/8 SS Header - Xforce HS-8916XForce 4 2 1 Stainless Steel Header (Part Number: HS 8916) Enhance the performance of your Mazda Miata MX 5 with the XForce 4 2 1 Stainless Steel Header. Designed to improve exhaust flow and increase horsepower, this header is an excellent upgrade for enthusiasts seeking enhanced driving dynamics. Product Features: 4 2 1 Tri Y Design: Optimizes exhaust scavenging for improved torque and horsepower across the RPM range. High Quality Construction:
XForce 4-2-1 Stainless Steel Header (Part Number: HS-8916)
Enhance the performance of your Mazda Miata MX-5 with the XForce 4-2-1 Stainless Steel Header. Designed to improve exhaust flow and increase horsepower, this header is an excellent upgrade for enthusiasts seeking enhanced driving dynamics.
Product Features:
- 4-2-1 Tri-Y Design: Optimizes exhaust scavenging for improved torque and horsepower across the RPM range.
- High-Quality Construction: Crafted from 304 stainless steel for durability and corrosion resistance.
- Precision Engineering: Mandrel-bent tubing ensures smooth exhaust flow and consistent performance.
- Direct Fitment: Designed for a straightforward installation on specified Mazda Miata models.
Item Specifics:
- Brand: XForce
- Manufacturer Part Number: HS-8916
- OE/OEM Part Number: HS-8916
- Type: Exhaust Header
- Items Included: Exhaust Header, Gasket, Mounting Hardware
- Material: 304 Stainless Steel
- Substrate Material: Stainless Steel
- Color: Silver
- Features: Mandrel-Bent Tubing, High-Flow Design, Corrosion Resistant
- Placement on Vehicle: Front, Engine Bay, Exhaust System
- Fuel Type: Gasoline
- Primary Tube Diameter: 1 5/8 inches
- Collector Attachment: 2-bolt flange
- Gaskets Included: Yes
- Hardware Included: Yes
Vehicle Fitment:
This header is compatible with the following Mazda Miata MX-5 models equipped with a 1.6L engine:
- 1990-1993 Mazda Miata MX-5
Important Notes:
- Professional Installation Recommended: To ensure optimal performance and fitment, professional installation is advised.
- Emissions Notice: This product may not be legal for use on pollution-controlled vehicles in certain regions. Please verify local regulations before installation.
Upgrade your Mazda Miata's exhaust system with the XForce 4-2-1 Stainless Steel Header to experience improved performance and a more engaging 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:
- 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
4.9 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 4
Great Ergonomic Support and Fit, with Minor Adjustment Caveats
Color: Black Full Mesh, Style: Executive, Color: Black Full Mesh, Style: Executive
As someone who is 5'4" and 140 lbs, the size of the chair feels ideal, and the seat cushion is spacious without feeling overwhelmingly large. The breathable mesh material is high quality, keeping me cool during long working sessions while still feeling sturdy. The back support and adjustable lumbar feature aligns perfectly with my spine and has noticeably reduced my posture fatigue. The height adjustment mechanism operates smoothly to align perfectly with my desk, and the assembly process was surprisingly straightforward, taking less than 20 minutes with clear instructions and tools included. My only slight hesitations are regarding armrests not being long enough. The wheels are not easy to roll on carpet and require a bit of extra effort to move. Maybe a chair mat might be helpful on carpeted floors. However, for the price, the comfort and build are impressive.
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Reviewed in the United States on June 11, 2026
★★★★★ 5
High quality and incredible customer service
Color: Black Full Mesh, Style: Executive
This is an extremely well made chair at a very competitive price. The packaging, assembly instructions, as well as the way the hardware was packaged and labeled is probably the best I've seen. I'm particular about tools, and the included allen wrench was better than the normal "included tools" so much so that i actually used it rather than one of my own. The assembly was easy, and the chair itself looks and feels very high quality, and is very comfortable. Perhaps best of all was the level of customer service. I emailed on a weekend to activate the warranty and request the free cushion they offer. I got a personal response in less than a day and they offered upgraded wheels for free as well. This is a company worth doing business with.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
Great product AND customer service!
Color: Black Full Mesh, Style: Executive
I'm having a hard time writing this review because I can't tell which one I like better: the product or the customer service!
I work on a computer all day, so a comfortable office chair is critical for me. This chair is great - it's adjustable in every way I need it to be, especially the armrests. The breathable mesh is both durable and supportive, and is more comfortable to sit in than the "overstuffed" chair it replaced.
Let me just say: no company provides better customer service than MOLENTS. Right after assembling my chair (which was very easy, btw), I registered for the 2 year warranty they offer. The NEXT DAY I received an email from Alice in their customer service department 1) to confirm my warranty, 2) to tell me about the free foam seat cover they were sending me, and 3) to make sure the chair was comfortable and easy to assemble. Very few companies take the effort to follow up with customers right after making a purchase like that.
I'm extremely happy with this purchase. This chair is worth MORE than it's weight in gold, and I strongly recommend to anyone thinking about buying an office chair to buy it from MOLENTS - you won't regret it.
Oh, and if Alice's supervisors are reading this: she absolutely deserves a promotion!
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Reviewed in the United States on March 13, 2026
★★★★★ 5
Great value and a good chair
Color: Black Full Mesh, Style: Executive
Great chair for the price. Not as solid as an Ergo but it's not thousands of dollars either. It's pretty easy to assemble and the directions are good. It rolls well on LVP flooring and they offer 'upgraded' wheels at no cost from what I can tell. I didn't order them since the included ones work perfectly.
I'm 6'4" and both the seat and arm heights can be adjusted to fit me well. The mesh seat is comfortable and the back works fine. The only downside for me is that the lumbar support doesn't adjust quite high enough to actually reach my lumbar area, but I think it would work for most folks.
Overall it's hard to argue with the cost and even if it only lasts a few years it's worth the money.
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Reviewed in the United States on December 21, 2025
★★★★★ 5
Great Chair and Outstanding Customer Service
Color: Black Full Mesh, Style: Executive
I desperately needed a new office chair. I ordered this chair with the mesh seat and it spike up my sciatica. I reached out to the company and Alice took great care to address the issue. She sent me a new seat with a foam cushion and it resolved the issue immediately. The chair is incredibly comfortable with the lumbar support, adjustability and foot support. She also sent me upgraded wheels as my chair is on a thin chair mat on hard wood floors. Alice was extremely responsive with possible options and very thorough with instructions on how to replace the seat. It is a high quality chair that I anticipate will last me quite some time. I highly recommend this company and will definitely order products from them again should the need arise. Thank you, Alice!!
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Reviewed in the United States on June 10, 2026