Borla Performance S-Type CrateMuffler - Ford Small Block 289/302/351W V8 (400834)
Optimize the acoustics and unleash the true power of your classic custom build with the Borla Performance S-Type CrateMuffler. As part of the world's first muffler lineup engineered specifically to complement the unique sound signatures of crate and custom-built motors, this specialized component is custom-tuned for the stock-output Ford Small Block 289, 302, and 351W cubic-inch displacement (CID) V8 engine family (excluding Coyote 5.0L platforms). Featuring Borla's legendary S-Type acoustic engineering, this muffler delivers a classic, throaty muscle car exhaust note while drastically reducing or completely eliminating unpleasant interior cabin drone for a superior driving experience.
Engineered to handle the exhaust volume of classic engines, this oval-body muffler is manufactured from premium T-304 austenitic stainless steel to provide lifelong protection against rust, discoloration, and structural degradation. The internal design features a directional flow configuration, ensuring maximum exhaust gas velocity and minimized backpressure. For easy identification during custom fabrication, the outlet end comes equipped with a pre-welded mounting bracket directly on the endcap. Measuring 14 inches in case length and 19 inches overall, this 2.25-inch offset inlet and offset outlet muffler is proudly backed by a lifetime Million-Mile Warranty.
Features
- Purpose-built CrateMuffler design optimized specifically for stock-output Ford Small Block V8 engines
- Delivers Borla's classic S-Type sound profile with a deep, throaty muscle car exhaust note
- Custom acoustic tuning drastically reduces or eliminates drone inside the passenger cabin
- Premium T-304 austenitic stainless steel build provides maximum long-term structural durability
- Directional flow construction features a pre-welded installation mounting bracket on the outlet endcap
- Utilizes a 2.25" offset inlet and 2.25" offset outlet for versatile custom exhaust packaging
- Can be paired with Borla resonator 400937 to convert the system to a quieter Touring sound profile
- Backed by Borla's iconic lifetime Million-Mile Warranty, ensuring ultimate quality assurance
Specifications & Dimensions
- Engine Application: Ford Small Block 289 / 302 / 351W CID V8 (Stock Output)
- Inlet Diameter / Configuration: 2.25" - Offset Position
- Outlet Diameter / Configuration: 2.25" - Offset Position (Features Welded Bracket)
- Muffler Sound Level: S-Type (Classic / Aggressive)
- Muffler Case Shape: Oval
- Muffler Case Length: 14"
- Muffler Case Height: 4.35"
- Muffler Case Width: 9.10"
- Overall Component Length: 19"
*Note: This is a universal-fit fabrication component intended for custom exhaust applications. It is directional and must be oriented correctly. Does not fit Coyote 5.0L applications. Clamps, piping, and installation hardware are not included.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

