Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
XForce | 100 Cell Round Metallic High-Flow Catalytic Converter | 3" Inlet/Outlet | CAT11-300(100)XForce 100 Cell Round Metallic High Flow Catalytic Converter 3" Inlet Outlet CAT11 300(100) Unleash the full potential of your high performance engine with the XForce 3" High Flow Metallic Catalytic Converter. Engineered for motorsport and custom performance applications, this unit features an ultra low restriction 100 cell metallic substrate. The metallic core is significantly more durable and flow efficient than standard ceramic cores, allowing for
XForce 100 Cell Round Metallic High-Flow Catalytic Converter - 3" Inlet/Outlet - CAT11-300(100)
Unleash the full potential of your high-performance engine with the XForce 3" High-Flow Metallic Catalytic Converter. Engineered for motorsport and custom performance applications, this unit features an ultra-low-restriction 100-cell metallic substrate. The metallic core is significantly more durable and flow-efficient than standard ceramic cores, allowing for maximum exhaust gas velocity and reduced backpressure. This specific model features a 4.5" round body with integrated tapered cones to ensure a smooth transition for exhaust gases entering and exiting the 3" pipework. Encased in a premium brushed-finish 304 stainless steel body, the CAT11-300(100) is built to withstand extreme thermal stress while delivering superior performance.
What's in the Box?
- 1x 100 Cell High-Flow Round Metallic Catalytic Converter
Features:
This product offers the following high-performance features:
- 100 Cell Metallic Substrate: The highest-flowing catalyst design available, providing minimal restriction for high-horsepower builds.
- 304 Stainless Steel Construction: High-grade stainless steel body with a professional brushed finish for long-lasting corrosion resistance.
- Tapered Cone Design: Ensures a progressive and smooth flow transition from the 3" inlet to the 4.5" catalyst body.
- High Heat Tolerance: Metallic substrate reaches operating temperatures quickly and maintains structural integrity under extreme racing conditions.
- Universal Fitment: Designed for custom welding into any 3-inch (76mm) high-performance exhaust system.
Specifications:
- Part Number: CAT11-300(100)
- Body Dimensions: 4.5" Diameter x 6" Long (plus tapered cones)
- Inlet/Outlet Diameter: 3" (76.2mm)
- Substrate Type: 100 Cell Metallic
- Material: 304 Stainless Steel
- Finish: Brushed Stainless
- Fitment Type: Universal Weld-On
Important Information
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
- Emissions Note: High-flow catalytic converters may not meet all local emissions regulations. Please check your local laws regarding road use and emissions compliance before purchase.
- Installation: Measure your vehicle's existing exhaust space for compatibility. Professional welding and installation are required.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| Universal | Custom Performance Exhaust | N/A | N/A | Universal | N/A | Universal | High-Flow Performance | 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
4.7 ★★★★★
Based on 1472 reviews
Sort
Product Reviews
★★★★★ 5
reliable filters at a great price
Pattern Name: 16x20x1, Style: Merv 8
I've been using these Amazon Basics air filters for a while now, and they've been a great value. They fit perfectly, are easy to install, and do a good job of trapping dust, pollen, and other airborne particles.
Since switching to these filters, I've noticed less dust around the house and my HVAC system seems to run efficiently. The MERV 8 rating provides solid everyday filtration without restricting airflow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Amazon Basics MERV 11 Filters: Solid Performance Without the Premium Price
Pattern Name: 20x20x1, Style: Merv 11
Amazon Basics MERV 11 Filters: Solid Performance Without the Premium Price
I’ve been using these Amazon Basics 20x20x1 MERV 11 filters in my home HVAC system, and overall they’ve been a very dependable option for routine filter changes. I like buying them in a 6-pack because it takes the hassle out of remembering to reorder every couple of months, and the per-filter cost is noticeably lower than the big-name brands at the hardware store.
Installation is straightforward. The actual size fits my return slot properly with no bending or forcing, and airflow has remained strong. With MERV 11, these strike a nice balance for my setup — noticeably better dust and pollen capture than basic MERV 5 or 8 filters, but without putting obvious strain on the system. After about a month of use, the filters clearly show they’re doing their job, collecting a visible layer of dust and fine debris.
A few things to keep in mind. The cardboard frame isn’t as rigid as some premium filters, and they’re a bit thinner than brands like Filtrete. They’ve held up fine for me during normal use, but I wouldn’t try to stretch them much past the recommended replacement interval. Also, if you have an older or low-powered HVAC system, MERV 11 may be more filtration than you need — in that case, a lower MERV option might make more sense.
Bottom line: These Amazon Basics MERV 11 filters are a practical, budget-friendly choice that deliver solid filtration and good airflow for regular HVAC maintenance, as long as you stick to timely replacements and don’t expect premium-brand rigidity.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
★★★★★ 5
Great filter at Great price.
Pattern Name: 14x14x1, Style: Merv 8
Prefect fit and works great. We have these on subscription to match our system filter replacement reminder.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
⭐️⭐️⭐️⭐️⭐️ I can breathe again — and my house says thank you 😂
Pattern Name: 20x20x1, Style: Merv 11
⭐️⭐️⭐️⭐️⭐️ I can breathe again — and my house says thank you 😂
These Amazon Basics MERV 11 air filters have been a game changer for my HVAC system. I installed them and immediately felt like my home went from “dust tornado aftermath” to “spa-day air vibes.” Whether it’s pollen, pet hair, or mystery dust bunnies lingering in the corners, these filters make the air feel noticeably cleaner and fresher.
Installation was about as easy as ripping plastic wrap off a new gadget — pop out the old filter, slide these in, and suddenly the air quality goes from “huh?” to “ahhh.” The electrostatic pleated design grabs everything from sneaky dust motes to pet dander like a champ, and I can actually tell when the AC kicks on that the air feels crisper — in a good way. 🌬️
Between the six count and the solid MERV rating, this was a smart purchase that keeps my HVAC happy and my allergies way more manageable. If you want clean air without the hassle, these filters are a fantastic value and really get the job done. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
★★★★★ 4
Good, I think.
Pattern Name: 16x25x1, Style: Merv 11
Not my area of expertise but wanted something with a thicker filter and these seem to be doing well. They last 3+ months before discoloration is noticeable to the point you’d think it’s time to put in a new filter. The 6-pack price can’t be beat, truly. Easily installed and used, fits perfect to size and looks clean. Unknown relief on allergies so far since it’s been winter but I’m optimistic.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026