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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
4.6 ★★★★★
Based on 401 reviews
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Product Reviews
★★★★★ 4
Omegaverse
Format: Kindle
I was pleasantly surprised by this omega verse book. This 1 definitely had a few new twists And I really enjoyed reading it. The main female character was a badass and awesome. She had 1 best friend I wish we could have seen a little bit more of their friendship in this book. Her relationship with the male characters was good not to contrived or super instantaneous. And we had some fun plot twists that I didn't expect. I wish we had more of a follow up on the situation with her family her background and her mother who was a wench. I would definitely recommend this book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2025
★★★★★ 5
Wow. Just wow. An amazing read
Format: Kindle
This book was eloquently written, or should I say the authors writing style is very eloquent? I loved the characters, and the story was quite compelling. I absolutely loved the FMC, she's a BA who doesn't take any crap & gives as good as she gets. A certain person certainly got his just desserts & then some, the earlier scenes of which were quite satisfying, had me punching the air & everything haha. All in all 20/10, great read
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 29, 2024
★★★★★ 3
My opinion
Format: Kindle
Let me preface this by saying I really liked the story and the characters however, this book is in desperate need of some sort of editing. It's not misspelled words or formatting, but continuous run on sentences. Redundancies within the sentences. There were a couple of paragraphs that I had to go back and reread 3 or 4 times. Overall, I'd say it was worth the read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2025
★★★★★ 5
Beautiful
Format: Kindle
I love omegaverses I had looked at this one multiple times thinking it's just another book about cocky rock star guys that let fame get to their heads and there are parts like that so I wasn't 100% off. I started reading the second book and met the fmc Astraea from the first one,after she had a run in with the aphla from the gym.😁 it gave me the push to stop and read book one first and im so glad I did this book was amazing their was so many characters I fell in love with hoping they will find their happily ever after. the guys were great, the plot was 🎯, and the ending had me 😭😭😭. I was wondering how nate could ever redeem himself, and he did. the last scene with him was sad, but I also felt it was beautiful. thank you to the author for making a beautiful omegaverse book that gave me all the feels. now I'm jumping straight into book two.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2025
★★★★★ 4
Knot their Omega
Format: Kindle
It took me a day to really get into the book, there is a lot happening in the beginning of the story. I wish there was more of a time frame because I felt like something’s happened quickly but they were farther away than I thought so that was a little confusing to me. I felt like there was so much happening but also not enough.
As for the story itself I enjoyed it, it was different than other OV I’ve read. Bring the tissues, you will need them. They guys were great, I wish we saw more of Kai and Kenjis relationship. As for Nate…… IYKYK.
I enjoyed this book, my first from this author and look forward to reading about Kamaris story.
Book: ⭐️⭐️⭐️⭐️/5
Spice: 🌶️.5/5
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2024
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