SKU: 39375298606

XForce | Twin 2.5" Cat Back Exhaust with Mufflers | Holden Commodore Calais VT VX VY VZ 1997–2007 | E4-HV20-1-CBS

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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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SKU: 39375298606

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4.4 ★★★★★
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Product Reviews
T
Verified Purchase
T. Bock
Alexandria, US
★★★★★ 3
Difficult/impossible to unscrew plastic cups (in order to recharge the vibrating/blinking device)
Color: Orange
Generally, I don't leave feedback on items purchased. However, in this case, I feel compelled to do so in hopes the mechanical engineers (of this product) will take my input to heart and ultimately modify it. First the pros... - I have 2 high-energy dogs (Jack Russell Terriers) who love their toys (e.g., chewing bones, tug-of-war, etc.) but usually get bored with them rather quickly. - This interactive PetDroid ball, however, keeps them busy for a long time. - In fact, my smaller dog (Max) knows its storage location and sits (as early as 6 AM) in front of the cabinet so that I give him "his ball". It keeps him busy for up to 1-2 hours at a time. - Max is literally addicted to the PetDroid ball... his determinant play with it makes me laugh all the time. Now, the cons... - After several days of play, the exterior looks chewed up quite a bit. That's no problem though. - Unfortunately, the interior "threads/grooves" of the two plastic cups (for closing/fasting) are very tiny. - Thus, after an hour-long hard play, it is almost impossible to unscrew the 2 plastic cups in order to recharge the interior device. - It appears the 2 cups somehow come off track and get realigned from the inside. - At that point, I cannot unscrew the PetDroid ball in order to recharge the device.... and without the blinking/vibration, this toy is no longer fun for play. - Ultimately, I had to place the bottom half of the ball into a vise and then use a plumbing wrench to untwist it. Proposed Solution: - Increase the size of the plastic cups' interior threads/grooves so that they won't get realigned/come off track. - This would mitigate the current dilemma of NOT being able to unscrew the ball in order to recharge it. In my view, this should be a relatively simple fix and significantly improve the durability of this product. Thank you for your time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2022
S
Verified Purchase
Scott L.
Natrona Heights, US
★★★★★ 5
Good fun and entertaining!
Color: Orange
A really fun interactive toy for your dog! It's pretty erratic and really gets him chasing it. The included soft cover was kinda hard to install and then it's hard to turn it off and on with the cover on, I feel like the cover didn't really improve it at all, sure it's louder without the cover but I feel like dog also likes it that way, he likes loud squeaky toys and this thing making a bunch of noise is appealing to him. We have mostly hardwood floors so it really gets moving, I'm sure on carpet it would be a bit quieter and maybe even a bit slower to move around but on hard smooth surfaces this things can really get zipping around abd get some speed to make him chase it. Overall a fun and entertaining toy.
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Reviewed in the United States on January 27, 2026
B
Verified Purchase
bill a.
Belleville, US
★★★★★ 5
Awesome
Color: Orange
Awesome Toy . My Jack is crazy over it. She usually get bored with others, but this toy still has her attention after a couple of weeks Runs a long time on a short charge. 👍🏻
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Reviewed in the United States on May 30, 2026
C
Verified Purchase
Chad
Draper, US
★★★★★ 2
Not the Fetch-Fest I Hoped For
Color: Orange
I had high hopes for the PetDroid Interactive Dog Ball, especially with the newly upgraded features and promises of durable, motion-activated fun. Unfortunately, it didn’t quite live up to expectations for my furry friend. Here’s why I’m giving it 2 stars. Promising Features, Lackluster Results The idea behind this toy is fantastic: a durable, motion-activated ball that would entertain my dog without much effort on my part. The ball is supposed to roll around on its own, keeping my dog engaged and active. However, in practice, it just didn’t capture my dog’s interest. Durability I will give credit where it’s due: the ball is well-made and seems durable. It can withstand some rough handling, which is great for more aggressive chewers. Unfortunately, durability doesn’t mean much if your dog won’t play with it in the first place. Motion Activation The motion activation feature is hit or miss. While the ball does move around as advertised, it didn’t seem to move in a way that intrigued my dog. He gave it a sniff, watched it for a minute, and then walked away, unimpressed. I tried multiple times to get him interested, but he simply wasn’t having it. Lack of Engagement The biggest issue is that the ball just didn’t engage my dog at all. It might be more suitable for a different personality type or breed, but for my pooch, it was a total flop. He’s usually quite playful and curious, so I was surprised by his lack of interest. Final Thoughts Overall, the PetDroid Interactive Dog Ball might work for some dogs, but it was a miss for mine. If your dog is easily entertained by automated toys, it might be worth a try. However, based on my experience, I can’t wholeheartedly recommend it. Pros: Durable construction Motion-activated as advertised Cons: Did not engage my dog Motion activation wasn’t intriguing enough Might be more suitable for specific dog types or personalities If you decide to give it a shot, just be prepared for the possibility that your dog might not find it as entertaining as you hope. For us, it’s back to the drawing board for a more engaging toy.
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Reviewed in the United States on June 14, 2024
S
Verified Purchase
Sally
Houston, US
★★★★★ 4
Pup Loves It, Some Other Notes
Color: Orange
We've had this for about six months and my 75 lb, 14-month-old German Shepherd pup LOVES IT. Her favorite is "Crazy Bouncing Mode." In fact, she doesn't care much for the normal mode. She chews it a lot - even drops it in her water bowl at times - and it's still going strong. This is a great purchase. It's nice hands-off entertainment. Do know that it is heavy compared to a normal ball - if your pup likes dropping it on the ground like mine does, it will land with a hard "thud," even with the included sleeve. Hopefully you don't have downstairs neighbors. Also know that the cover that goes over the charging port is removable and your dog may choke on it if they chew it in just the right manner. Definitely only let the pup play with it while supervised. All in all, great toy.
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Reviewed in the United States on February 11, 2026

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