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Description
XForce | LS1 V8 Headers & Metallic Cat Kit | Holden VT-VZ 1 3/4" Primaries | H2-HV13B-KITXForce LS1 V8 Header & Metallic Cat Kit 1 3 4" Primaries H2 HV13B KIT Unlock the maximum potential of your LS1 V8 with the Xforce Header and Cat Kit. Crafted from high strength 201 grade stainless steel, this kit features larger 1 3 4" primary pipes designed specifically for modified or high output Gen III engines that require superior exhaust scavenging. The 4 into 1 tuned design merges into a 3" outlet for optimal flow velocity. Included in this
XForce LS1 V8 Header & Metallic Cat Kit - 1 3/4" Primaries - H2-HV13B-KIT
Unlock the maximum potential of your LS1 V8 with the Xforce Header and Cat Kit. Crafted from high-strength 201-grade stainless steel, this kit features larger 1 3/4" primary pipes designed specifically for modified or high-output Gen III engines that require superior exhaust scavenging. The 4-into-1 tuned design merges into a 3" outlet for optimal flow velocity.
Included in this performance package are 3" metallic high-flow 100-cell catalytic converters. These "race-style" cats significantly reduce backpressure compared to standard ceramic units, allowing your V8 to breathe freely. Expect a noticeable increase in torque, horsepower, and a deeper, more aggressive exhaust note. This kit is a direct bolt-on solution when paired with an Xforce cat-back exhaust system.
What's in the Box?
- 1x Pair of 4-into-1 Headers (1 3/4" Primaries, 3" Outlets)
- 2x 3" Metallic High-Flow 100-Cell Catalytic Converters
- Installation Gaskets and Bolt Hardware
Features:
- Large 1 3/4" Primaries: Ideal for cammed or modified LS1 engines requiring increased flow.
- 3" Metallic Cats: 100-cell substrate provides maximum flow while maintaining a physical catalytic brick.
- 4-into-1 Tuned Design: Precision engineered to balance exhaust pulses and improve mid-to-high range power.
- Durable Construction: Non-polished 201-grade stainless steel for long-lasting performance.
- Broad Fitment: Suits a wide range of VT-VZ Holden and HSV RWD/AWD variants.
Important Installation Notes:
- O2 Extension Looms: Required for installation as the sensor bungs are relocated (sold separately).
- Dyno Usage: It is highly recommended to use tuning pipes in place of cats when tuning on a Dyno to avoid overheating the metallic substrate.
Specifications:
- Make: Holden / HSV
- Engine: 5.7L LS1 V8
- Header Primary Size: 1 3/4" (45mm)
- Header Outlet Size: 3" (76mm)
- Material: 201 Stainless Steel
- Cat Type: 100-cell Metallic
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
HSV Maloo (01/1994 - on), GTO (01/1994 - on), GTS (01/1994 - on), Sv300 (01/1994 - on), Senator (01/1994 - on), Clubsport (01/1994 - on), Avalanche (01/1994 - on), Coupe 4 (01/1994 - on), Grange (01/1994 - on), Holden Commodore (01/1994 - on), Calais (01/1994 - on), Crewman (01/1994 - on), One Tonner (01/1994 - on), Statesman (01/1994 - on), Monaro (01/1994 - on), Caprice (01/1994 - on), Adventra (01/1994 - on)
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN / HSV | ||||||||
| HOLDEN | ADVENTRA | 08/2003 | 12/2007 | Wagon | VY, VZ | LS1 5.7L | All V8 | AWD |
| HOLDEN | COMMODORE | 06/1999 | 12/2007 | Sedan/Ute/Wagon | VT-VZ | LS1 5.7L | All V8 | RWD |
| HOLDEN | MONARO | 12/2001 | 07/2006 | Coupe | V2, VZ | LS1 5.7L | All V8 | RWD |
| HOLDEN | STATESMAN / CAPRICE | 06/1999 | 07/2006 | Sedan | WH, WK, WL | LS1 5.7L | All V8 | RWD |
| HSV | CLUBSPORT / SENATOR | 07/1999 | 09/2004 | Sedan | VT, VX, VY | LS1 5.7L | i V8 | RWD |
| HSV | MALOO | 03/2001 | 09/2004 | Ute | VU, VY | LS1 5.7L | i V8 | RWD |
| HSV | GTS / GTO | 04/1995 | 09/2004 | Sedan/Coupe | VS, VT, VX, VY, V2 | LS1/HSV V8 | 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
4.1 ★★★★★
Based on 1750 reviews
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Product Reviews
★★★★★ 1
Stings! Waste of money! Doesn’t accept returns!
Item Package Quantity: 1
Very disappointed with this spray sunscreen.
Although I’m usually not sensitive to sunscreens or face creams in general, this product made my eyes burn and tear up so much and so fast that I’m not able to use it. Such a waste. I even tried applying while covering just my eyes to avoid that area and it still stings. And it also goes on greasy, definitely not cute glowy looking. It is not a flattering shine. For the price I’m very disappointed and even upset that I didn’t notice before buying that you cannot return it. Don’t waste your money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
★★★★★ 5
☀️ Holy Grail SPF Mist! especially for makeup days 💦
Item Package Quantity: 1, Item Package Quantity: 1
If you hate the feeling of greasy sunscreen but still want serious protection, this is the glow-up you’ve been waiting for. I use this as the last step in my morning skincare and as a top-up over makeup throughout the day. It’s lightweight, non-greasy, and gives a dewy finish without looking oily, just a fresh, hydrated glow ✨
The mist is fine and even (no big droplets or weird stickiness), and it dries down fast. No white cast, no clogged pores, no breakouts. Just SPF 50+ that actually works with your makeup instead of wrecking it. I’ve even used it midday at Disneyland and didn’t burn once, and I’m someone who burns if I think too hard about sunshine 🥵
Helpful hint: Shake it well before spraying, and hold it about 6 inches from your face for a nice even mist. One pass usually does the trick, but I like to go back over my nose and cheeks for extra protection ☁️ It also doubles as a midday makeup refresher, especially when your foundation starts looking a little dry 🧴
I brought this with me on a full weekend trip to Disneyland and it absolutely earned its spot in my park bag 🎒 I was in the sun all day, both days, and didn’t burn at all, even with minimal shade and back-to-back rides 🎢 It layered like a dream over makeup, didn’t feel heavy, and made touch-ups fast and easy in between churros. This mist officially passed the Disneyland test. 🎡☀️💕
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Reviewed in the United States on September 19, 2025
★★★★★ 3
Good but heavy smell
Item Package Quantity: 1
I will keep using this bc it works and the sprayer is sooo nice but the smell is so overwhelming. It’s not a bad smell but it’s just so heavy. I’ll use this one but I don’t see myself repurchasing.
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Reviewed in the United States on May 4, 2026
★★★★★ 4
Good but confusing instructions
It is very glowy. After spraying this on my husband commented on why I was sweating so much 😹 I told him it’s my face mist spf. I have very dry and very sensitive skin and this has not broken me out (yet). I’ve used it for about a week now. I don’t know how much sun protection I’m really getting though. And reapplying it all through out the day, esp in the summer will lead to very very oily looking skin.
It’s also confusing because it says do not spray directly onto face. (?) I just hold my breath and close my eyes tightly before I put my mascara on and spray this. So far it’s been helpful with not making my make up look cakey. There is a smell but it’s not a bad smell, slightly fruity and the smell of spf. If you are sensitive to smells this might not be for you.
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Reviewed in the United States on April 5, 2025
★★★★★ 5
Wonderful!
Item Package Quantity: 1
This makes your skin glow. Smells amazing. I’m older and in my 50s and it is great sun coverage and brightener. I will 100% keep using this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
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