Pay in installments of $56.14 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
XForce | 2.5" Oval Varex Valved Universal Muffler | Side Mounted Motor | 304 Stainless Steel | VMK40-250XForce 2. 5" Oval Varex Valved Universal Muffler with Side Mounted Motor VMK40 250 Varex mufflers utilize our patented technology to combine the civil design of a stock muffler with the high flow performance of a racing unit into one single, compact assembly. This universal 2. 5" muffler is the ultimate tool for custom exhaust builders, providing the ability to adjust the exhaust note on the fly. Crafted from high grade 304 stainless steel, this model
XForce 2.5" Oval Varex Valved Universal Muffler with Side Mounted Motor - VMK40-250
Varex™ mufflers utilize our patented technology to combine the civil design of a stock muffler with the high-flow performance of a racing unit into one single, compact assembly. This universal 2.5" muffler is the ultimate tool for custom exhaust builders, providing the ability to adjust the exhaust note on the fly. Crafted from high-grade 304 stainless steel, this model features a specialized side-mounted motor configuration, making it the perfect choice for vehicles with limited vertical clearance or unique underbody packaging requirements. With the included Varex controller and dual key fobs, you can instantly switch from a quiet, neighborhood-friendly tone to a deep, high-performance growl, ensuring your vehicle sounds exactly how you want it, exactly when you want it.
What's in the Box?
- 1x Varex Valved Oval Muffler (Side Mount Motor)
- 1x Varex Control Kit (Wiring, Control Box, and Remote)
- 2x Key Fob Remotes
- Installation Hardware
Features:
This product offers the following high-performance features:
- Patented Varex Valve Technology: Electronically controlled internal valve allows for seamless sound adjustment from quiet to loud.
- Side-Mounted Motor: Engineered for tight spaces where top-mounted actuators may interfere with the vehicle floor or chassis.
- 304 Stainless Steel: Premium construction for maximum resistance to corrosion and high-temperature durability.
- 2.5" Center Inlet: Features a 3" long inlet with a 2-bolt flange for secure and easy integration into custom 2.5-inch exhaust systems.
- Performance Sound: Delivers a refined, non-restrictive exhaust path when open, maximizing power and acoustic output.
Specifications:
- Part Number: VMK40-250
- Body Dimensions: 6" High x 10" Wide x 16" Long
- Inlet Diameter: 2.5" (63.5mm)
- Inlet Type: 2-Bolt Flange (3" Long)
- Outlet Diameter: 2.5" Single Pipe (5" Long)
- Material: 304 Stainless Steel
- Motor Position: Side Mounted
- Actuator Clearance: Requires 2-inch clearance for motor operation
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
- Installation Note: This is a universal component and may require custom modification for fitment. Electrical wiring to the cabin is required for valve operation.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| Universal | Custom Exhaust Build | N/A | N/A | Universal | N/A | Universal | Custom Fitment | N/A |
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
4.1 ★★★★★
Based on 23 reviews
Sort
Product Reviews
★★★★★ 5
Good
Color: Black, Size: 6 Panel
Love it , just what so needed , easy to put together (some what ) …
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 3
Decent for the price. Instructions suck but most people should be able to figure it out. More below.
Color: Black, Size: 6 Panel, Color: Black, Size: 6 Panel
SUMMARY:
3 stars from me because it's firmly average. It's fine for the price. Assembly and materials are alright but I can see some caveats depending on your circumstances. Assembly instructions do a subpar job of pointing out some details.
ASSEMBLY INSTRUCTIONS:
Maybe it's because I'm autistic and/or building model kits and assembling stuff is my jam, but I honestly thought people were exaggerating when they were complaining about the instructions and I'd be able to flex my ~superior assembly skills.~ I was wrong! These instructions genuinely suck, and whoever is responsible for making them should be ashamed.
The instructions do a poor job of calling out some details regarding orientation of parts, and some of the images do not actually match the physical parts.
For example, it does not really outline the assembly of the end panels clearly, and I can see someone accidentally using the wrong poles. I've drawn over a photo to show what you should do to try and make it clearer. Additionally, the manual shows a flathead screw for bolting the feet into position, but the actual screw is not a flathead. It also does not point out the counterbore, so if you aren't paying attention you may put the foot pads onto the wrong side of the foot. It's also missing the fact that you need to use another one of the plastic pieces when you finish assembling a panel.
ACTUAL ASSEMBLY & MATERIALS:
To their credit, all of my bags were clearly labeled. The assembly process wasn't difficult. It's mostly just tedious and requires a fair amount of space. I was able to assemble it by myself without any real difficulty. However, the way it's assembled means two things.
One, the fabric parts aren't removable without disassembly. So if you want to use this in an environment where they would require cleaning, I would seriously recommend looking for another option. Or, you could buy this just to use the frame pieces and then somehow buy or make your own fabric pieces designed to be removable with velcro or something.
Two, because of the materials I really don't have a lot of faith in this thing surviving disassembly and reassembly. Like a lot of sorta-cheap-but-convenient furniture, it uses those spring-button connections and plastic inserts with self-tapping screws. Those things are not really meant to be disassembled and rethreaded. It also relies a lot on the tension of the poles and the fabric to keep everything rigid and squared, which I think puts a lot of pressure on the aforementioned buttons, plastic inserts, and the hollow metal rods. So I feel like that will also cause issues with disassembly and reassembly.
Basically once this thing is assembled, it's not really meant to be disassembled. The best you can do is spot-clean the fabric if you need to.
Speaking of the fabric, I didn't see any labels on them or anything in the manual that says what they are, but they feel like some kind of polyester. They generate static electricity pretty easily, and pet hair and debris sticks easily. So that's another downside of them not being easily removable.
For the most part it does seem pretty stable. The poles seem to be pretty uniform in length so they're all making contact with my floor. Obviously this isn't structural so it shouldn't be supporting anything, but the two main feet seem to be doing fine with keeping this thing upright.
CLOSING THOUGHTS:
Really, it's fine for what it is, but it could be better in a lot of little ways and the substandard quality of the instructions just seems unprofessional to me, which is why I'm being so harsh with my rating. Depending on your needs and environment you may want to consider a different option. Preferably one that is made to be disassembled with better materials, and/or one with fabric pieces made to be removed easily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2023
★★★★★ 1
Not as it seems
Color: Black, Size: 6 Panel
these are awful... Each individual panel is fine, but when you put it together it can barely stand up, and the clips that hold it together keep popping off. Steer clear of this item.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
★★★★★ 5
As described
Color: White, Size: 6 Panel
Works great in my clinic
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Review
Size: 6Ft-without USB
Nice surge protector. Really like the amount of outlets. The big seller is the rotating plug.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026