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Description
XForce | Twin 2.5" Cat Back Exhaust with Mufflers | Holden Commodore Calais VT VX VY VZ 1997–2007 | E4-HV20-1-CBSXForce Twin 2. 5" Performance Cat Back Exhaust System Holden VT, VX, VY & VZ Sedan E4 HV20 1 CBS Elevate the performance and sound of your LS1 or L76 powered Holden with the XForce Twin 2. 5" Cat Back System. Specifically engineered for VT through VZ sedans, this system is crafted from durable raw finish 409 stainless steel. The twin 2. 5" mandrel bent pipework ensures optimal exhaust flow, significantly reducing backpressure compared to the factory
XForce Twin 2.5" Performance Cat-Back Exhaust System - Holden VT, VX, VY & VZ Sedan - E4-HV20-1-CBS
Elevate the performance and sound of your LS1 or L76 powered Holden with the XForce Twin 2.5" Cat-Back System. Specifically engineered for VT through VZ sedans, this system is crafted from durable raw finish 409 stainless steel. The twin 2.5" mandrel-bent pipework ensures optimal exhaust flow, significantly reducing backpressure compared to the factory setup. Featuring two centre straight-through mufflers and a twin-in twin-out rear muffler section, this system provides a powerful V8 exhaust note that remains refined and balanced. Finished with twin 3" tips, it offers a perfect blend of performance gains and a classic high-performance aesthetic.
What's in the Box?
- 1x Twin 2.5" Raw 409 Stainless Steel Pipework
- 2x Centre Straight-Through Performance Mufflers
- 1x Twin-In Twin-Out Rear Straight-Through Muffler Section
- Twin 3" Polished Exhaust Tips (Note: Welding required for final installation)
- All Required Gaskets and Bolt Kit
Features:
This XForce performance exhaust system includes the following features:
- Twin 2.5" Mandrel-Bent Piping: Designed to maximize exhaust velocity for improved torque and horsepower gains.
- Raw 409 Stainless Steel: Built for durability and heat resistance, suitable for high-performance V8 applications.
- Balanced Sound Profile: The combination of centre and rear mufflers delivers a deep, aggressive V8 growl without excessive drone.
- Versatile Fitment: Precision-engineered to fit a wide range of VT, VX, VY, and VZ sedan models including Commodore, Calais, and HSV variants.
- Twin 3" Tips: Adds a performance-ready look to the rear of your vehicle.
Specifications:
- Make: Holden / HSV
- Model: Commodore / Calais / SS / Berlina / Clubsport
- Series: VT, VX, VY, VZ
- Body Style: Sedan
- Year Range: 1997–2007
- Engine Compatibility: 5.0L, 5.7L LS1, 6.0L L76/LS2, 3.8L Supercharged
- Material: 409 Stainless Steel
- Pipe Size: Twin 2.5 Inch (63mm)
- System Layout: Cat-Back System
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 E4-HV20-1-CBS
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN VZ SERIES | ||||||||
| HOLDEN | COMMODORE | 11/2005 | 06/2006 | Sedan | VZ | L76, LS2 | 6.0L | Petrol | SS, i V8 SV8 | RWD |
| HOLDEN | COMMODORE | 09/2004 | 12/2005 | Sedan | VZ | LS1 | 5.7L | Petrol | SS, SS Z, i V8 SV8 | RWD |
| HOLDEN | CALAIS | 09/1997 | 12/2006 | Sedan | VZ | L76 | 6.0L | Petrol | - | RWD |
| HOLDEN | COMMODORE | 09/2004 | 06/2006 | Sedan | VZ | H7, LY7 | 3.6L | Petrol | i V6 SV6 | RWD |
| HOLDEN VY SERIES | ||||||||
| HOLDEN | COMMODORE | 09/1997 | 07/2007 | Sedan | VY | LS1 | 5.7L | Petrol | SS, SV8, Berlina | RWD |
| HOLDEN | CALAIS | 09/1997 | 08/2004 | Sedan | VY | LS1 | 5.7L | Petrol | i V8 | RWD |
| HOLDEN VT & VX SERIES | ||||||||
| HOLDEN | COMMODORE | 09/1997 | 09/2007 | Sedan | VX | LS1 | 5.7L | Petrol | SS, Executive | RWD |
| HOLDEN | COMMODORE | 09/1997 | 10/2007 | Sedan | VT | LS1 | 5.7L | Petrol | SS, Executive | RWD |
| HOLDEN | COMMODORE | 09/1997 | 06/2007 | Sedan | VT | GMH 304 | 5.0L | Petrol | i V8 | RWD |
| HOLDEN | CALAIS | 09/1997 | 10/2000 | Sedan | VT | LS1 | 5.7L | Petrol | i V8 | RWD |
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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
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.9 ★★★★★
Based on 619 reviews
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Product Reviews
★★★★★ 5
Total GAME CHANGER - incredibly effective toothbrush for dogs
Color: Clear (2-pack)
This silicon finger brush is incredibly easy to use - and so EFFECTIVE (more on that in the last paragraph this review). At first, it seemed a little hard to get on my finger but I simply got my finger wet first under the faucet and it slipped right on with virtually no effort. And once on, it's easy to take off but doesn't slip off accidentally when in use - so - perfect! Quick & simply to clean - rinses off in the sink in seconds, and ready to use the next time. And, my dog not only lets me clean her teeth - she actually like it (this from a dog who used to hate it when I would try to brush her teeth with a regular doggy toothbrush).
This silicon "brush" is incredibly maneuverable - way more so than standard dog toothbrushes or regular finger brushes. So much so it makes it super easy to not only get those normally impossible to reach back molars - AND - even the back sides of the teeth! With a normal dog tooth brush (or finger brush) my dog's clamping down made that impossible. Now, it's not only possible - it's easy!
Our dog's canine teeth had build-up but it was not until I pulled her gums back and looked at her back molars that I saw how bad things had gotten - and we have a young dog! Her back molars not only had build-up but some appeared to be stained a tea colored brown that did not come off with my fingernail. It was pretty disheartening and I felt terrible. How could this happen so quickly? The vet said it was plaque (and not yet tartar) and that it wasn't bad enough to warrant a professional cleaning - yet - but that I needed to do a better job brushing. He said: "I can see exactly where your brushing stops" (referring to the condition on the back molars which I had not been able to do with a regular brush as my dog just wasn't having it).
Tips: here's what's working for us. Instead of squeezing out a pea sized blog of tooth paste onto this brush, I put a tiny dab - that it's - on the very tip of the brush and focus my efforts on two of our dog's worst teeth on one side - on top and then on the bottom. Then I put another small dab and repeat on the other side of her mouth with 4 teeth on that side. Then, I use another small dab and focus work on another group of teeth. All totaled, I'm using maybe 4 to 6 very small dabs of dog toothpaste, probably half the size of pea collectively, perhaps less. That's it. However much you choose to use is up to you - be sure and use an amount that's safe and effective for your dog.
Effectiveness: this works and it works well! In just 3 days using the same vanilla flavored enzymatic toothpaste by CET I was seeing improvement. By day 7, that improvement was so obvious I was actually surprised by how much better they looked. It's now been a little over two weeks and they are looking considerably better! Conservatively, I'm thinking a 50% improvement. Not bad for just 2 weeks, right? I'm actually think I'm going to be able to completely reverse things - we'll see. I'll try and update this review again in a few weeks and let you know how it's looking but in the meantime, I am absolutely thrilled with this brush. I paid $16 and it came 2 in a pack) and the first (and only one) I've been using still looks brand new after it's rinsed off. All in all - this brush is a game changer! I can now brush our dogs back teeth and even the back sides of her teeth, all in less than a couple minutes a day.
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Reviewed in the United States on August 23, 2020
★★★★★ 3
Plastic not a brush
Color: Clear (4-pack)
Love the idea, dont care for the texture. It would be nice if they were soft brush and not plastic.
Would retuen but i missed the window.
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Reviewed in the United States on May 22, 2026
★★★★★ 5
Better than a toothbrush!
Color: Blue (2-pack)
Perfect for brushing my doggies teeth!
Easy to use and my dogs like it better than a toothbrush.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Great dog toothbrush!
Color: Blue (2-pack)
I’ve been using this product for a year now, and it’s been working great. When paired with vanilla mint enzymatic toothpaste, it effectively cleans my Pomsky’s teeth, including the back teeth. As a result, my fur baby’s teeth remain as white as ever!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Hair growth
I see results with my hair growth I'm very pleased. There is a noticeable smell to it but dissipates over a short time.
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Reviewed in the United States on May 9, 2026