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Description
XForce | LS1 V8 Headers & High-Flow Cat Kit | Holden Commodore VT-VZ 1999–2007 | H2-HV12B-KITXForce LS1 V8 Header & Metallic Cat Kit Holden VT VZ H2 HV12B KIT Upgrade your LS1 V8 performance with the Xforce Header and Cat Kit. Crafted from durable 201 grade stainless steel, this kit is specifically engineered to optimize exhaust scavenging and flow for the 5. 7L Gen III engine. It features a high performance 4 into 1 design with 1 5 8" primary pipes collecting into a 2. 5" outlet. The kit includes 2. 5" metallic high flow 100 cell catalytic
XForce LS1 V8 Header & Metallic Cat Kit - Holden VT-VZ - H2-HV12B-KIT
Upgrade your LS1 V8 performance with the Xforce Header and Cat Kit. Crafted from durable 201-grade stainless steel, this kit is specifically engineered to optimize exhaust scavenging and flow for the 5.7L Gen III engine. It features a high-performance 4-into-1 design with 1 5/8" primary pipes collecting into a 2.5" outlet.
The kit includes 2.5" metallic high-flow 100-cell catalytic converters, providing a significant reduction in backpressure compared to factory units. This combination delivers improved torque, increased horsepower, and the deep, aggressive V8 growl that Xforce is famous for. Designed as a modular upgrade, this kit is intended to bolt directly to Xforce cat-back exhaust systems for a complete performance solution.
What's in the Box?
- 1x Pair of 4-into-1 Headers (1 5/8" Primaries)
- 2x 2.5" Metallic High-Flow 100-Cell Catalytic Converters
- Gasket and Bolt Kit for Header-to-Cat connection
Features:
- 4-into-1 Design: 1 5/8" primary pipes for balanced flow and improved mid-range torque.
- High-Flow Metallic Cats: 100-cell substrate for maximum exhaust velocity while maintaining performance.
- 201 Grade Stainless Steel: Non-polished finish for heavy-duty durability.
- RWD Compatibility: Specifically suits VT-VZ LS1 RWD sedan, ute, and wagon variants.
- Performance Ready: Designed to integrate seamlessly with Xforce cat-back systems.
Important Installation Notes:
- O2 Extensions: O2 sensor extension looms are required for installation (sold separately).
- Dyno Usage: Tuning pipes must be used in place of catalytic converters when running the vehicle on a Dyno to prevent substrate damage.
Specifications:
- Make: Holden
- Model: Commodore, Statesman, Caprice
- Series: VT, VX, VU, VY, WL
- Engine: 5.7L LS1 V8
- Primary Pipe Size: 1 5/8"
- Collector/Cat Size: 2.5"
- Material: 201 Stainless Steel
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
Vehicle Applications for XForce H2-HV12B-KIT
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| HOLDEN | CAPRICE | 06/1999 | 01/2006 | Sedan | WH, WK, WL | LS1 | 5.7L | i V8 | RWD |
| HOLDEN | COMMODORE | 06/1999 | 12/2007 | Sedan/Ute/Wagon | VT, VX, VU, VY, VZ | LS1 | 5.7L | All V8 Variants | RWD |
| HOLDEN | STATESMAN | 06/1999 | 07/2006 | Sedan | WH, WK, WL | LS1 | 5.7L | i V8 | 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:
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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
4.5 ★★★★★
Based on 2441 reviews
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Product Reviews
★★★★★ 5
Simple upgrade that actually feels worth it
Color: Black, Size: normal
I replaced a cheap milk frother I had from Walmart with this one, and it’s definitely an upgrade. Right out of the box it just feels a bit nicer and more solid, not flimsy like the other one.
It’s also noticeably more powerful. It froths milk really quickly and does what it’s supposed to without any effort. I did notice it only has one ring on the whisk compared to the two on my old one, but I honestly don’t notice any difference in how it works.
Only small thing was getting the batteries in, which was a little tighter than I expected. Not a big deal, just took a second.
Overall, it just works well and feels worth the price. I’ve only had it for a short time, but so far I’m happy with it and hoping it holds up.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Great frother at a good price
Color: Black, Size: normal
Works really well and priced appropriately. Produces rich froth with minimal effort and works MUCH better than other much higher priced frothers. Highly recommended. I hope it lasts a good long time.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Perfect for protein shakes and coffee - one warning about getting it wet
Color: Black, Size: normal
Bought this to replace a similar handheld whisk I had been using for protein shakes and stirring extras into my morning coffee. At this price point I was not expecting much, and it has done exactly what I need - with one warning I will get to.
I use this almost every morning. Two jobs: mixing a scoop of whey protein into water or milk so it actually dissolves (no clumps stuck to the side of the shaker), and stirring pre-workout powder or a flavor additive into my coffee. This is not a blender and I do not treat it like one. For small-volume mixing of powders into liquid, it is the right tool.
WHAT WORKS
- It does not over-froth or whip air into the drink. Some handheld whisks turn a protein shake into a foam mess. This one keeps the liquid liquid - it just dissolves the powder. That is the main reason I came back to this category.
- No splashing, even with the cup near the brim. I can stir a nearly-full coffee mug without flicking liquid onto the counter. The previous one I owned could not do this.
- One button. Runs as long as I hold it. A typical protein shake or coffee mix takes under ten seconds.
- Easy to hand-wash. Rinse the whisk end, wipe the handle, back in the drawer.
WHAT DOES NOT (the warning)
- You cannot throw the whole thing in the sink with the rest of the dishes. The handle is not waterproof. We made this mistake exactly once - it got soaked, never worked again. At this price the loss was not a big deal, but it is the one thing I wish the listing made more obvious. Hand-clean the whisk end only, keep the handle dry.
- Battery-powered. Replace the batteries when it starts feeling slow rather than waiting for it to fully die mid-shake.
WHO IT IS FOR
If you need a small-volume mixer for protein powder, coffee, hot chocolate, pre-workout, or anything where you are dissolving a powder into a single cup or shaker, this is the tool. If you want to blend smoothies or actually break down ingredients, buy a real immersion blender instead.
Five stars. The wet-handle failure was my mistake, not the product's. Doing its job every morning - would buy again.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
$7 value
Color: Black, Size: normal
Works wonderfully if the liquid you’re blending has no viscosity, but it slows down brutally if given any kind of resistance.
It’s small and lightweight and very easy to use.
Works for my bloom, but it does not work very well for my protein shakes.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Strong, Durable, and SIMPLE Frother
Color: Gray
Excellent frother! It is ‘SIMPLE’, yet very efficient blending. I love that it included a set of long-lasting batteries. The motor on this frother is strong and works great. The item itself is of durable quality. I have had mine for about 9 months and use it daily for my coffee and other drinks throughout my week, and the battery is still running. I even give it a spin after washing the frother spinner/coil. This helps to dry it thoroughly, as the motor is strong enough to blow away any excess water - and still - the batteries are functioning well. The price is just right…very affordable compared to other brands. I’m very pleased with this purchase and absolutely love that it also came with a stand. I display it on my counter everyday. There are 3 solid and Simple colors to choose from, making this an easier shopping experience. Excellent choice for gifting!
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Reviewed in the United States on March 19, 2026