Ramjet 1 3/4-inch headers and high-flow cats for the Holden VE & VF Commodore LS V8
Top view of Ramjet 1 3/4-inch Holden VE VF Commodore headers and cats
Ramjet high-flow catalytic converters for V8 performance exhaust systems
Description
The Ramjet 1¾" Headers & Cats for the Holden VE & VF Commodore LS V8 is a direct bolt-on header and high-flow cat package, designed and tested in Australia. 1¾" mandrel-bent equal-length primaries and high-flow catalytic converters free up real horsepower, torque and throttle response while staying streetable — the ideal base for camshaft or head-and-cam packages. Suits LS1, LS2, LS3, L77 and LSA engines.
Specifications at a glance
- Fits: Holden VE & VF Commodore LS V8 (LS1, LS2, LS3, L77, LSA)
- System type: Long-tube headers + high-flow cats (engine-pipe back to cats)
- Primary tubes: 1¾" mandrel-bent, equal-length
- Pipe size: 2.5" standard or 3" (select at checkout)
- Cat options: 100-cell metal or 400-cell ceramic
- Material: Stainless steel
- Fitment: Direct bolt-on to factory mounts — no cutting
Built for Holden VE & VF LS Engines
Whether you’re running an LS1, LS2, LS3, L77 or LSA, these headers are engineered to get the most out of your V8 — the perfect base for camshaft upgrades, head & cam packages, and tough naturally aspirated street cars.
Key Features & Benefits
1¾" mandrel-bent primary tubes dialled in for VE & VF LS engines to balance grunt down low with strong pull up top. High-flow performance catalytic converters flow better than factory while staying streetable, reducing backpressure and freeing real power. The equal-length design improves cylinder evacuation and throttle response and delivers that crisp Aussie V8 note. Premium stainless steel construction handles Aussie conditions with excellent heat resistance and durability, and the direct bolt-on fit uses factory mounts — no cutting required.
Why Choose Ramjet?
Ramjet headers are developed right here in Australia for Australian cars, roads and driving styles — tested on real Holdens, not just on a screen. This isn’t just about making your car louder; it’s a proper performance exhaust solution for Holden VE & VF V8s, built to make your car faster, sharper and more aggressive.
Frequently Asked Questions
Will these fit my VE or VF Commodore? Yes — they bolt straight onto Holden VE & VF Commodore LS V8s using the factory mounts, with no cutting required.
Which engines are supported? LS1, LS2, LS3, L77 and LSA.
Should I choose 2.5" or 3"? 2.5" suits most street and mild-cam builds; 3" suits bigger head-and-cam or higher-output combinations.
Metal or ceramic cats? 100-cell metal suits most naturally aspirated builds; 400-cell ceramic offers extra heat retention. Both are high-flow and streetable.
Do I need a tune? A tune is recommended to realise the full gains, but is not required for fitment.
🚚 Shipping calculated at checkout — ships Australia-wide & worldwide
↩️ 7-day returns on unopened items
📞 Not sure if it fits? Call +61 452 071 148 or (03) 9746 6656 — talk to the team who builds these.
Product information
PRODUCT FEATURES
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F.A.Q.
They appreciate cut and details, things that aren't so obvious.
Will these headers bolt straight up?
These headers are designed to bolt up to any cat-back system that connects to the factory headers and catalytic converters, including brands like Xforce, Empire, and Manta.
However, some Manta systems may not start at the standard connection point and could require a connector pipe.
We recommend contacting Manta to confirm compatibility or whether a Manta-specific connector pipe is needed
Can these be delivered to my house?
These headers and cats can be delivered straight to your door or workplace.
Are the Ramjet headers easy to install?
Yes, the Ramjet headers and cats are straightforward to install. In some cases, you may need to check clearance on the driver’s side K-frame.
Ensure there’s roughly a 5mm gap between the header and the K-frame.
If clearance is tight, you may need to fit new engine mounts to slightly raise the engine, or gently massage the header with a soft hammer to achieve the required clearance
How long will shipping take?
If the headers are in stock, they’ll be dispatched within 1–2 business days.
How To Return My Items?
We offer returns only if the headers are faulty.
If a fault is suspected, the item must be returned for inspection. Once confirmed by our team, a full refund will be issued.
Performance Technology
Race Merge Collector
The Ramjet race merge collector improves exhaust performance by smoothly guiding exhaust gases from multiple primary pipes into a single outlet, reducing turbulence and pressure reversion.
This creates stronger exhaust scavenging, helping pull spent gases out of the cylinders more efficiently, which improves cylinder filling on the next intake cycle.
The result is increased exhaust gas velocity, stronger mid-range and top-end power, a cleaner and more efficient power curve, and a sharper, more refined exhaust note