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Description
XForce | 3" Short Round 100 Cell Metallic High-Flow Catalytic Converter | CAT09-300(100)XForce 3" Short Round 100 Cell Metallic High Flow Catalytic Converter CAT09 300(100) Engineered for maximum flow in high performance applications, the XForce Short Round Metallic Catalytic Converter is the ideal solution for custom builds where space is at a premium. This compact unit features a high performance 100 cell metallic substrate, designed to offer significantly less backpressure than standard ceramic converters. The reduced cell density
XForce 3" Short Round 100 Cell Metallic High-Flow Catalytic Converter - CAT09-300(100)
Engineered for maximum flow in high-performance applications, the XForce Short Round Metallic Catalytic Converter is the ideal solution for custom builds where space is at a premium. This compact unit features a high-performance 100-cell metallic substrate, designed to offer significantly less backpressure than standard ceramic converters. The reduced cell density allows exhaust gases to exit more rapidly, aiding turbo spool-up and increasing overall engine efficiency. Crafted from durable 304-grade stainless steel, this "Shorty" converter is built to withstand extreme thermal stress. Its 6-inch overall length makes it perfect for tight exhaust tunnels or engine bays where a full-sized converter simply won't fit.
What's in the Box?
- 1x 3" Short Round 100 Cell Metallic Catalytic Converter
Features:
This product offers the following high-performance features:
- 100 Cell Metallic Substrate: Provides ultra-low restriction for maximum power output and improved throttle response.
- 304 Stainless Steel Body: High-grade material ensures maximum durability and resistance to oxidation in high-heat environments.
- Ultra-Compact Design: With a 6" overall length and a 4" x 3" body, it is one of the most space-efficient high-flow cats on the market.
- Precision Inlet/Outlet: Features 3" (76mm) openings for seamless integration into 3-inch performance exhaust systems.
- High Heat Resilience: The metallic core reaches operating temperature quickly and is more resistant to physical shock than ceramic alternatives.
Specifications:
- Part Number: CAT09-300(100)
- Overall Length: 6" (152.4mm)
- Body Size: 4" Diameter x 3" Length
- Inlet/Outlet Diameter: 3" (76.2mm)
- Substrate Type: 100 Cell Metallic
- Material: 304 Stainless Steel
- 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
- Usage Note: This product is designed for race or off-road use only. It may not comply with local emissions regulations for street-driven vehicles.
- Installation: Measure your vehicle's available space for compatibility. Professional welding and installation are required.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| Universal | Custom Race/Off-Road Exhaust | N/A | N/A | Universal | N/A | Universal | 100 Cell High-Flow | 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
4.3 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 3
Not much noise reduction…
Material Type: 157mil Closed Cell Foam, Style: 157 mil 36 SqFt
Easy to install but did not provide much sound dampening…
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
High quality, super sticky, very effective
Style: 30 sqft
As long as the surface is thoroughly cleaned, these mats will stick to just about anything. They provide my car with a tremendous amount of sound dampening and have made riding in the car 10 times more enjoyable.
I drive a Toyota Yaris and although the engine is built like it's meant to last forever (imagine that), the rest of the car is not of high quality. Which means we used to get A LOT of noise coming from the road, other cars, etc. After I installed these mats which, by the way, I wasn't able to install on every surface I wanted to install them on (due to lack of tools to be able to disassemble certain parts of the interior), the noise coming from outside the car is nearly completely gone.
I covered the underside of my hood, the entire interior part of the hatchback, most of the floor in the trunk / spare tire well, and the entire interior side of the doors. The parts I couldn't get to (or didn't want to) were: the ceiling, underneath the driver & passenger seats, behind the dash and the floor for the 2nd row seating. As you can see I left a lot of surfaces untreated with this product AND STILL it blocks most of the sound.
To note: people recommended getting the roller tools to help install these mats. I got a few of them in different sizes and they worked O K. Not because of the quality of the tool but because some places you need to install these mats in don't have enough clearance to use the tool. That being said, for the larger surfaces, the roller tools help a lot. Also I found it very beneficial to use aluminum tape while installing these. The tape I used is specifically designed for materials that undergo high temperature changes (like your dryer vents, etc.). This wasn't because the mats were not sticky enough but because there were some places I installed the mats with small gaps between them.
I'd also recommend getting some kind of fluffy insulation-type material for large spaces that need noise dampening. Rock wool, for example, worked great for me. As an example, the interior sides of the 2nd row seating walls had large spaces between the plastic interior cover and the metal part of the car wall. I'd install the mats on the metal but was left with 6" - 7" of space between it and the plastic cover. I chose to fill those spots (and spots like it) with insulation which provided EVEN MORE noise dampening.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 25, 2024
★★★★★ 5
Best butyl out there.
Style: 30 sqft
If you want the money you're spending on equipment to pay off, you NEED to deaden sound! I've used every major brand and siless is my favorite to work with and the best value for your money, I'm not just adding weight, it's a thermal barrier and reduce outside noise.
I turned a 10 year old, base model civic into what feels like a top tier Lexus .
Does not offgas, no smell. Super easy to install.
Make sure you get a set of rollers! They're required to achieve the advantages of this stuff, it MUST be adhered well and you don't want to tear the interior out twice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 10, 2025
★★★★★ 5
Yes
Style: 30 sqft
Easy to work with, quiets doors very well, cuts very easily to any shape needed or wanted with scissors, sticks well, and molds in to place well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Easy to install and easy to cut! Good quality
Style: 30 sqft
Details in the video! Only used dynamat in the past so I was hesitant to use this. Hesitant no more and the price was good. Good value, easy install, very happy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 26, 2026
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