Borla ATAK CrateMuffler (400852) delivers high-performance sound and durability for BBC 396, 402, and 427 crate motors in custom-built applications. This directional muffler uses Borla’s proprietary ATAK (Acoustically Tuned Applied Kinetics) technology to produce the highest decibel levels without compromising audio clarity, giving you that aggressive growl while retaining definition.
Designed for enthusiasts building high-output engines, the CrateMuffler is made from premium T-304 stainless steel, offering corrosion resistance superior to T-400 series variants like 409. Its 2.5-inch inlet/outlet with offset/center configuration fits various setups, while the oval body (14in x 4.35in x 9in) ensures efficient performance in tight spaces. Borla’s industry-leading quality is backed by a Million-Mile Warranty for peace of mind.
Key Features :
Designed for BBC 396/402/427 crate and custom-built engines
ATAK technology delivers maximum sound output with acoustic clarity
Directional muffler design with bracket identifying outlet side
Constructed from high-grade T-304 stainless steel for durability
2.5-inch ID inlet and outlet with offset/center configuration
Compact oval body dimensions: 14in x 4.35in x 9in
Backed by Borla’s Million-Mile Warranty
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