XForce | LS1 V8 Headers & Metallic Cat Kit | Holden VT-VZ 1 3/4" Primaries | H2-HV13B-KIT

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

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