Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
XForce | 3.5" In 3.5" Out Flanged Oval Varex Muffler | Universal Fitment | VMK11-350XForce Oval Varex Universal Muffler 3. 5" Inlet 3. 5" Outlet VMK11 350 Make it loud, make it quiet, make it yours with the Patented XForce Varex valved universal muffler. This system delivers on demand exhaust acoustics allowing you to toggle between closed, 25%, 50%, 75%, and fully open valve positions using the supplied key fobs. Note: Universal fitment requires welding and fabrication; allow 2 inch clearance for actuating motor. What's in the Box?
XForce Oval Varex Universal Muffler - 3.5" Inlet 3.5" Outlet - VMK11-350
Make it loud, make it quiet, make it yours with the Patented XForce Varex valved universal muffler. This system delivers on-demand exhaust acoustics allowing you to toggle between closed, 25%, 50%, 75%, and fully open valve positions using the supplied key fobs. Note: Universal fitment requires welding and fabrication; allow 2-inch clearance for actuating motor.
What's in the Box?
- 1x Varex Valved Universal Muffler (10" x 6" Oval Body, 3.5" In / 3.5" Out)
- 2x Varex Wireless Key Fobs
- 1x Wiring Harness & Control Module
Features:
This product offers the following high-performance features:
- Adjustable Sound Control: Patented Varex technology gives you full exhaust volume control at the push of a button.
- Premium Construction: Crafted from high-quality 304 Stainless Steel for excellent durability, finish, and corrosion resistance.
- SmartBox Friendly: Ready to upgrade with XForce SmartBox for Bluetooth smartphone control, including automatic valve setting and geo-fencing.
Specifications:
- Make: Universal
- Model: Universal
- Year Range: Universal
- Material: 304 Stainless Steel
- Pipe Size: 3.5 Inch Flanged Inlet / 3.5 Inch Single Outlet
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 VMK11-350
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| UNIVERSAL FITMENT | ||||||||
| Universal | Universal | - | - | All | All | All | All | All |
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
4.6 ★★★★★
Based on 2084 reviews
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Product Reviews
★★★★★ 4
Cleans Out Working Carburetors
Size: 2 fl oz
I recommend this product for engines that will in fact start but not run well. I highly recommend it for that specific purpose, which it is designed for. It cleans the inner workings of the carburetor. Of course, you will have a cleaner carburetor if you take it apart and clean it with proper tools and a proper carburetor cleaner.
You spray it in the gas tank, start the engine, and let it run a bit. It will not start an engine with a totally plugged up carburetor. Nothing is going to do that. Nor is it a fuel stabilizer, as one previous reviewer seemed to think. Nor is it a product to be used to bring life back to stale gasoline, as another reviewer seemed to think. The only thing to do with stale gasoline is drain it out and pitch it. Nor is it a product to be used for cleaning a carburetor you have taken apart to clean. You should use a proper carburetor cleaner for that purpose.
I've given it four stars because it cleans out mildly plugged up carbs. It is not a miracle solution for really neglected carbs as the name suggests.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2020
★★★★★ 5
Helps fixing small engines
Size: 2 fl oz
⭐⭐⭐⭐⭐⭐⭐
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
It works like magic, saved me $150.
Size: 2 fl oz
I filled 1/4 tank of gas into my snowblower which I could not started, sprayed about 15 seconds of Start Your Engines, rock snowblower to mix well, let it sat for an hour. I pulled string and yet couldn't start engine. Unscrewed spark plug and spray some into cylinder, put the spark plug back and pull the string. ENGINE STARTED!!! SAVED ME AT THE LEAST $150.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 1, 2026
★★★★★ 5
Great
Size: 2 fl oz
Great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 1
Flimsy Nozzle
Size: 2 fl oz
The nozzle is so flimsy at the moment I pressed on it it popped off the can into the gas tank. I didn’t press it softly but I also didn’t press it very hard either, getting it out was a huge pain in the butt.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
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