Starting at $46/mo with Affirm. Check your purchasing power
The smart fortwo 451 model Performance Side Exit Exhaust by SILA Concepts is the ultimate solution for those looking to upgrade their smart 451 model's exhaust system. Known for its superior quality and performance, this exhaust system enhances both the sound and efficiency of your vehicle.
This exhaust model, made by SILA Concepts, is the best-selling aftermarket exhaust for the smart 451. It boasts high-quality materials and craftsmanship to ensure reliability over many miles. This performance exhaust not only improves the auditory experience with a refined exhaust note but also enhances power output by optimizing exhaust flow through its less restrictive design compared to the factory-fitted system.
Features
We have been installing these performance exhaust systems for years, using them on our own vehicles with excellent results. Should you have any questions or need further assistance, feel free to reach out to us. We have two locations, one in Austin, Texas, and another in the Los Angeles, California area, where we provide installation and customization services. Give us a call at 512-982-9393 for the Austin location, or 562-981-6800 for the Los Angeles area.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
We're here to help!
Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
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SILA Concepts – Purpose-Built Performance Upgrades
Founded in 2009, SILA Concepts is a U.S.-based company specializing in thoughtfully engineered aftermarket performance parts and accessories. Their focus is on delivering functional, well-made upgrades that enhance both the performance and style of a wide range of vehicles.
SILA’s product lineup includes turbo blankets, blow-off plates, silicone hoses, performance air intakes, custom brake kits, engine control modules, performance exhaust systems, engine mounts, wheel spacers, car covers, and suspension components — with new items constantly in development.
Each part is designed with durability, function, and vehicle compatibility in mind. Using proven engineering practices and modern manufacturing processes, SILA Concepts ensures reliable performance with every product.
A Longstanding Partnership
MADNESS Autoworks has proudly partnered with SILA Concepts for years. We offer professional installation of their products at our locations and also ship them worldwide to enthusiasts seeking quality upgrades with dependable performance.
