Borla CrateMuffler Small Block Chevrolet ATAK 2.5-Inch Offset/Offset Exhaust Muffler Part #400774

Borla(r)'s CrateMuffler is the world's first muffler purpose-built to optimize the sound & power of crate and custom built motors. This CrateMuffler features the aggressive ATAK(r) sound. The mufflers are directional. The outlet can be identified by the mounting bracket welded to the endcap. The directional design provides custom sound, tuned for each engine family and will dramatically reduce, or eliminate drone on specified applications. Built from premium T-304 stainless steel, superior to T-400 series (such as 409), to give you the absolute best in performance and durability. Precision computer numerical control (CNC) manufacturing ensures an accurate fit and best of all, Borla(r) stands behind every CrateMuffler with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand. ATAK® CrateMuffler Small Block Chevrolet High Output 350/ 383/ 406 V8 2.5" Offset/ Offset 14" x 4.35" x 9.10" Body

• When installed on cataloged applications, they will reduce, or eliminate drone
• Mufflers have directional flow. Outlet end has mounting bracket on it.
• CrateMufflers are tuned for specific engines

The Borla CrateMuffler Part #400774 is engineered specifically for small block Chevrolet high-output engines, including 350, 383, and 406 V8s. Crafted from premium T-304 stainless steel, this muffler offers superior durability and corrosion resistance compared to T-400 series materials. Designed with precision CNC manufacturing, it ensures an exact fit for optimal performance. The ATAK sound profile delivers an aggressive tone that enhances the engine's character while providing a tuned sound for each engine family. Installation features a directional flow with an outlet that has a mounting bracket welded to the endcap, allowing for straightforward setup and customization.
This muffler is purpose-built to optimize both sound and power, making it an ideal choice for enthusiasts seeking a high-performance exhaust system. When installed on compatible applications, it effectively reduces or eliminates drone, improving overall driving comfort. The compact size and specific tuning make it suitable for a variety of custom and crate engine setups, providing a deep, aggressive exhaust note that complements the engine’s performance.
Borla’s reputation for quality and innovation is backed by a Million-Mile Warranty, ensuring long-term reliability and satisfaction. Whether upgrading a muscle car or building a custom project, this muffler is designed to maximize engine output while delivering the signature ATAK sound. Its offset inlet and outlet design streamline installation in a variety of engine bays, making it a versatile upgrade for serious enthusiasts committed to high-performance exhaust tuning.

Features:

• Constructed from durable T-304 stainless steel for superior corrosion resistance and longevity

• Designed with directional flow and a welded mounting bracket for easy installation

• Precisely tuned for small block Chevrolet high-output engines, including 350, 383, and 406 V8s

• Delivers an aggressive ATAK sound profile with customizable tone for each engine family

• Reduces or eliminates drone for a more comfortable driving experience

• Built with CNC precision manufacturing for an exact fit and optimal performance

• Covered by Borla's Million-Mile Warranty for peace of mind

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1