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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:
- 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
4.7 ★★★★★
Based on 1643 reviews
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Product Reviews
★★★★★ 5
Very cute, good quality
Style: Lambchop, Size: 10", Style: Lambchop, Size: 10"
Our Two year-old Great Pyrenees rescue loves her Lambchop. She’s fairly gentle with it, but it did accidentally rip so we had replace it since she loves it so much. No fault of the product. The product is very well made, She just got a little rough with it.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
We <3 big lambchops
Style: White, Size: 24" Jumbo, Style: White, Size: 24" Jumbo
These are my vizsla's absolute FAVORITE toy. I mean, she doesn't leave the room without bringing at least one. We've bought several of these exact toys now and they're surprisingly durable- we've even put a few through the laundry. She loves to snuggle, nibble, and carry this toy like a security blanket. These are the big ones, so they get a little discolored from her grabbing them around the belly. The squeakers are pretty few and far between so it's generally not noisy unless she's super bored or excited. Get it, your dog will love it and they're cheaper than some of the small ones.
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Reviewed in the United States on March 7, 2026
★★★★★ 5
A Classic Toy My Dog Can’t Get Enough Of!
Style: Blue Birthday Hat, Size: 10.5"
The Multipet Lamb Chop Dog Plush Toy (10.5”, Cream) is an absolute winner in our house! This adorable, nostalgic plush is just as cute as it is entertaining, and my dog fell in love with it the moment it came out of the package.
Super Soft & Cuddly
The material is extra plush and velvety, making it perfect for dogs who love to snuggle. It feels well-made and not scratchy like some cheaper toys.
Squeakers That Keep Dogs Engaged
There are multiple squeakers inside, and they’re loud enough to keep your dog excited but not obnoxious. My pup carries it around proudly and squeaks it nonstop.
Great Size
The 10.5” size is ideal for both small and medium to large dogs. Big enough to cuddle, small enough to toss around easily.
Durable for a Plush Toy
While it’s not built for heavy destroyers (no plush toy truly is), it holds up surprisingly well to daily play and lots of shaking.
Overall:
The Multipet Lamb Chop is a fantastic combo of cuddly plush and squeaky fun. Perfect for fetch, snuggles, or as your dog’s new favorite companion. If your dog enjoys plush toys, this is definitely one to grab.
Highly recommended! 🐑🐶💛
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Reviewed in the United States on December 11, 2025
★★★★★ 5
BEST TOY!
Style: White, Size: 6"
I recently bought the Multipet INTERNATIONAL 843140 Lambchop Plush Squeak Toy Mini for my small dog, and it has quickly become her favorite toy. Here’s why this little squeak toy is a great addition to any pet’s collection:
Adorable Design
The Lambchop Plush Squeak Toy is absolutely adorable. It resembles the beloved character Lambchop, which adds a nostalgic charm for those who remember the classic TV show. The toy is well-crafted with a cute, friendly face and soft, plush material. Its small size makes it perfect for petite pets, and it’s just the right size for my dog to carry around and snuggle with.
Engaging and Fun
The built-in squeaker adds an extra layer of excitement for my pet. Every time she bites down, the squeak captures her attention and keeps her engaged for longer periods. It’s great for interactive play, fetch, and even as a comforting chew toy. My dog loves the noise it makes and often brings it to me to initiate playtime.
Durable Construction
Despite its soft and plush exterior, the Lambchop toy has proven to be quite durable. My dog is a moderate chewer, and after several weeks of play, the toy is still intact with no signs of wear and tear. The stitching is strong and has held up well against my dog’s playful bites and tugs. However, for very aggressive chewers, it might not last as long.
Easy to Clean
The toy is also relatively easy to clean. I’ve hand-washed it a few times to keep it fresh, and it dries quickly without losing its shape or squeak. The white color, while prone to getting dirty, can be easily spot-cleaned to maintain its appearance.
Perfect Size for Small Pets
At 6 inches, this toy is ideally sized for small dogs and even cats. It’s lightweight and easy for them to carry around. My dog can comfortably grip it in her mouth, and the toy is soft enough for her to cuddle with during nap time.
Value for Money
Considering its durability, engaging design, and the joy it brings to my pet, the Multipet Lambchop Plush Squeak Toy offers excellent value for money. It’s reasonably priced and provides hours of entertainment and comfort for my dog.
Overall Impression
Overall, the Multipet INTERNATIONAL 843140 Lambchop Plush Squeak Toy Mini is a fantastic toy for small pets. Its adorable design, engaging squeaker, and durable construction make it a worthwhile purchase. My dog loves it, and it has quickly become a staple in her toy collection. I highly recommend this toy to anyone looking for a cute and fun squeak toy for their small pet.
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Reviewed in the United States on June 18, 2024
★★★★★ 4
Great, but a little big…
Style: Lambchop, Size: 10"
Super soft and cute, I got this for my toy Cavapoo puppy. The different textures are perfect. It is a little bigger than I was expecting, and will probably be about the same size as my puppy when I get her, but I’m sure she’ll love it. I don’t know how safe it will be yet since I’ve yet to be able to watch her play with it, but I don’t see anywhere that could have loose strings for her to choke on, so I’d say it’s pretty safe. Overall a perfect toy for dogs, with a squeaker and nice textures for the dog to chew on.
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Reviewed in the United States on May 4, 2026