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Description
XForce | Twin 3" Cat-Back Exhaust System | Holden Monaro V8 LS1 2001–2006 | E4-HV23-CBSXForce Twin 3" Performance Cat Back Exhaust System Holden Monaro LS1 E4 HV23 CBS Unleash the iconic V8 growl of your Holden Monaro LS1 with the XForce Twin 3" Cat Back Exhaust System. This high performance system is engineered for the true enthusiast looking to maximize both exhaust flow and acoustic character. Featuring a massive twin 3" mandrel bent pipe configuration, this system utilizes two high flow center straight through mufflers paired with a
XForce Twin 3" Performance Cat-Back Exhaust System - Holden Monaro LS1 - E4-HV23-CBS
Unleash the iconic V8 growl of your Holden Monaro LS1 with the XForce Twin 3" Cat-Back Exhaust System. This high-performance system is engineered for the true enthusiast looking to maximize both exhaust flow and acoustic character. Featuring a massive twin 3" mandrel-bent pipe configuration, this system utilizes two high-flow center straight-through mufflers paired with a specialized twin-in/twin-out rear straight-through muffler. This combination ensures a deep, aggressive performance note while minimizing backpressure, allowing your LS1 engine to breathe more effectively. Finished with twin 3" tips, this system provides the perfect blend of high-end performance and classic muscle car aesthetics.
What's in the Box?
- 1x Twin 3" Mandrel-Bent Center Section with Straight-Through Mufflers
- 1x Twin-In/Twin-Out Rear Straight-Through Muffler Section
- 2x 3" Exhaust Tips
- Installation Gaskets & Hardware
Features:
This product offers the following high-performance features:
- Twin 3" Pipework: Oversized diameter designed to provide maximum exhaust volume and reduced restriction for modified LS1 engines.
- Straight-Through Muffler Design: High-performance internal packing allows for optimal flow without the turbulence found in chambered mufflers.
- Mandrel-Bent Tubing: Ensures a constant internal diameter throughout every bend for smooth, laminar exhaust gas velocity.
- Aggressive V8 Sound: Specifically tuned to deliver a deep, raw, and powerful exhaust note that highlights the 5.7L LS1's character.
- Twin 3" Tips: High-quality exit tips designed to fit the Monaro's rear profile for a clean, performance-oriented look.
Specifications:
- Make: Holden
- Model: Monaro / CV8
- Engine: 5.7L LS1 V8
- Part Number: E4-HV23-CBS
- Material: Performance Grade Steel
- Diameter: Twin 3" (76mm)
- Muffler Type: Straight-Through
Important Information
- The image shown may not reflect the actual product; the system configuration may differ slightly based on production updates.
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| HOLDEN | ||||||||
| HOLDEN | MONARO | 2001 | 2004 | Coupe | V2 / V2 Series II & III | 5.7L V8 LS1 | CV8 | RWD |
| HOLDEN | MONARO | 2004 | 2006 | Coupe | VZ | 5.7L V8 LS1 | CV8 / CV8-Z | 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:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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
4.9 ★★★★★
Based on 1988 reviews
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Product Reviews
★★★★★ 5
Was skeptical but it worked out of the box
Style Name: MacBook Air 13" (M4), Configuration: 3 years, Style Name: MacBook Air 13" (M4), Configuration: 3 years
Was skeptical at first but decided to pull the plug and get the m4 laptop with 3 years of apple care and it works. Haven't even opened an email or anything, laptop was still fresh out of the box. When I remembered I bought apple care and decided to check. Applied instantly as far as I know once I linked my apple account on the first boot up with internet! Good stuff
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
★★★★★ 1
DO NOT PURCHASE WITH YOUR MACBOOK OR OTHER APPLE DEVICES
Style Name: MacBook Air 13" (M4), Configuration: 3 years, Style Name: MacBook Air 13" (M4), Configuration: 3 years
I bought this along with my MacBook. And here is why you SHOULDN'T:
1. They NEVER sent me an AppleCare+ Agreement. You will only be able to download a General Terms & Conditions file.
2. I bought: AppleCare+ for 13-inch MacBook Air (M4) (3 years) and in the General Terms & Conditions that I downloaded, looking for my AppleCare+ Agreement #, it NEVER mentioned Macbook Air as a covered device. It was meant for other smaller devices, which is why it's cheaper.
3. Like I mentioned, since I never received an agreement, I never got an agreement #.
4. Since this AppleCare wasn't actually meant for a MacBook, it didn't connect automatically to my computer. So when I went to talk to Apple and Amazon, without an Agreement # you can do ANYTHING.
If you purchase it, read through your General Terms and Conditions and find an excuse to ask for a FULL REFUND. Since this didn't cover my computer, I was thankfully able to get one, but it was a pain trying to talk to customer support and apple.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 27, 2025
★★★★★ 5
It worked! Apple Care was added to my device when I received it!
Style Name: MacBook Pro 14" (M4 Pro/M4 Max), Configuration: 3 years
I purchased an MacBook and AppleCare+ at the same time. A day/two after the purchase I received an email from Amazon that the AppleCare+ was in software and go to digital download. When I downloaded it was just the agreement. Then I started reading all the negative reviews on nightmare experience with Amazon and AppleCare+ not being added. I was very nervous and mentally prepare for the nightmare that lie ahead which having to call Amazon multiple times and then having to call Apple multiple times. To my surprise, right after Amazon delivered the MacBook (I got notification your item was delivered) I got another email from Amazon that AppleCare+ was added the laptop with agreement number and serial number of the laptop I received. I checked Apple's coverage site and sure enough Apple site showed AppleCare+ coverage tied the MacBook. I didn't even open the box or turn it on and see the AppleCare+ coverage. Hopefully this gives some insight to future buyers of AppleCare+ from Amazon!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2024
★★★★★ 1
DO NOT PURCHASE APPLECARE+ THROUGH AMAZON (Please read before making a decision)
Style Name: MacBook Air 13" (M4), Configuration: 3 years
I rarely write reviews like this, but DO NOT PURCHASE APPLECARE+ THROUGH AMAZON.
Just over a month ago, I purchased an Apple MacBook Air (m4) with AppleCare+. The AppleCare+ wasn't populating on the laptop, so after calls with Apple Support and Apple Agreement Administration, they found that AMAZON sent them the approved agreement with the device serial number then abruptly canceled it the following day. This happened over a month ago, and I was not notified nor have I received a refund.
I would not have known it was canceled if not for Apple Support and Apple Agreement Administration.
The only recourse is to receive a refund from Amazon--which is NOT automatic, I am fighting for this--and purchase AppleCare+ directly through Apple. Had all this taken place after the 60-days purchasing the MacBook Air (I'm currently one week short of this deadline), then I would be SOL on being able to cover my device.
PURCHASE AT YOUR OWN DISCRETION/RISK AND CHECK THAT APPLECARE+ IS APPROVED AND ACTIVE ON YOUR DEVICE. Otherwise, play it safe and activate directly through Apple.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 28, 2025
★★★★★ 5
Worked fine for me 🙌🏽
Style Name: MacBook Air 13" (M4), Configuration: 3 years
I read a lot of comments that said there was an issue with their purchase of AppleCare+, I did not have any of those experiences. AppleCare+ was on the laptop (MacBook Air, 13-inch 2025) automatically. I received an email with my confirmation of AppleCare+ coverage, along with my agreement number, product serial number and expiration date. There was nothing I needed to do on my end, because as I said it had already been added to my computer and attached to my iCloud account. — I hate that there are so many bad experiences and hope everything works out for anyone experiencing a nightmare but I can only recommend based on my experience, 10/10.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 4, 2025
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