Borla Universal S-Type Specialty 3-Inch Center Inlet / Center Outlet Polished T-304 Stainless Steel Round Heavy-Duty Truck Muffler (400436)
Unlock ultimate exhaust flow and aggressive acoustic tuning with the Borla Universal S-Type Specialty Heavy-Duty Truck Muffler. Masterfully engineered to meet the demanding requirements of high-horsepower track setups, race cars, performance trucks, and customized SUVs, this high-efficiency unit utilizes a bidirectional center-in and center-out 3-inch configuration. At its mechanical core, this premium racing muffler breaks away from restrictive traditional baffle layouts by incorporating Borla’s cutting-edge straight-through internal geometry. This innovative layout features an unrestricted core path that optimizes exhaust velocity and gas flow, generating an excellent scavenger effect. This advanced aerodynamic design maximizes peak horsepower, expands torque delivery, and completely eliminates backpressure bottlenecks for high-displacement, heavy-duty exhaust configurations.
The structural engineering of the Borla 400436 addresses long-term durability and installation problems beneath harsh track and street conditions through a 100% welded, heavy-gauge setup. Enclosed in a substantial 6.75-inch round by 24-inch long barrel case with a total 29-inch overall footprint, this robust assembly delivers excellent space optimization when tucked into expansive under-car zones, full-size performance truck frames, or custom SUV architectures requiring a long-body canister. The specialized heavy-duty truck layout packs a massive volume of advanced, high-temperature Continuous-Filament Fiber (CFF) acoustic sound control packing. This advanced insulation filters out high-frequency rasp and annoying highway cabin drone while preserving a raw, unrestrictive mechanical tone under full throttle, achieving Borla's signature aggressive S-Type sound level. Built completely from aircraft-quality, premium-grade T-304 austenitic stainless steel finished in a natural mill texture with smooth, un-notched neck bases, this heavy-duty canister accommodates custom brush or mirror-polished workshop textures prior to installation. Capable of being flipped or reverse-mounted due to its completely uniform, reversible internal configuration, this elite USA-made performance component delivers bulletproof structural stability backed by Borla’s legendary Million-Mile warranty.
S-Type Sound Profiles & Heavy-Duty Truck Performance: Unlike massive, quiet factory replacements or restrictive multi-chambered mufflers that choke engine velocity, this Borla Specialty HD unit delivers a straight-through performance design. The 6.75-inch round diameter casing is specifically tuned to generate a throaty, aggressive S-Type exhaust note on trucks and SUVs, minimizing interior cabin drone while ensuring thermal gas exits the tailpipe with zero physical restrictions.
Fabrication Installation Guideline Note: This high-performance universal muffler is built with smooth, un-notched attachment necks engineered for permanent weld-on workshop connection. If your project demands a removable mechanical configuration instead of a fixed weld joint, the smooth connection collars can easily accommodate heavy-duty, wide two-bolt style band clamps (clamps not included). If you prefer factory-notched slip-fit connections for standard clamps, see alternate part number 400500.
Features
- Aggressive S-Type Acoustic Profile: Specially sized to deliver a rich, deep, and sporty sound without excessive highway drone
- High-Flow 3-Inch Straight-Through Core: Center-in/center-out configuration provides uncompromised gas flow velocity for demanding truck builds
- Premium Continuous-Filament Fiber: Packed with high-temp CFF insulation to absorb harsh frequencies and survive punishing towing and hauling heat cycles
- Smooth Un-Notched Neck Bases: Engineered explicitly for high-strength welding or simple adaptation with heavy-duty wide band clamps
- 100% Symmetrical Reversible Layout: Bidirectional configuration provides ultimate fabrication flexibility, allowing it to be installed in either direction
- Heavy-Duty 100% Welded Body: Fully welded seams deliver maximum structural strength to resist extreme backfire pressures and off-road vibrations
- Constructed completely from premium-grade T-304 austenitic stainless steel for permanent structural integrity and ultimate rust resistance over low-grade 400-series hardware options
- Proudly Manufactured in the USA: Built in America by the world’s most experienced exhaust brand to guarantee flawless fitment and elite race-proven quality
Detailed Fitment Breakdown
Universal Application Parameters & Structural Boundaries:
This premium universal S-Type heavy-duty truck muffler is compatible with a massive array of custom and production vehicle platforms under the specific architectural parameters detailed below:
Universal Automotive & Custom Exhaust Fabrication Fitment:
- Integrates seamlessly into any custom aftermarket or factory replacement single or dual exhaust line running 3-inch piping
- Sized perfectly for center-mounted positions on full-size gas/diesel trucks, large performance SUVs, and custom hot rod projects
- Highly recommended for truck configurations requiring an extended 24-inch case to achieve optimal sound suppression without restricting power
- Compatible across all domestic and import car, truck, and SUV platforms with sufficient clearance for a 6.75" round x 24" body footprint
Sizing, Connection & Dimensional Details:
Fits your project layout across these exact structural specifications:
- Inlet / Outlet Connection Size: 3.00-Inch internal diameter centered ports at both ends
- Muffler Case Configuration: 6.75-Inch traditional round structural barrel shape
- Muffler Case Body Length: 24.00 Inches of primary sound suppression coverage
- Overall Muffler Total Length: 29.00 Inches from inlet tip to outlet tip boundary
- Internal Architecture Matrix: Straight-through high-flow performance configuration with premium CFF sound material
- Material Grade Composition: Authentic T-304 Austenitic Stainless Steel with a natural mill finish
Important Application Notes:
- **Premium Materials:** Built entirely with authentic T-304 stainless steel to deliver superior rust resistance and durability over lower-grade T-400 series or aluminized hardware choices.
- **Versatile Fabrication Paths:** Engineered as a professional universal component requiring basic cutting and welding modifications, providing custom fabricators with a dependable, heavy-walled material block that stands up to severe under-car heat cycles without fracturing.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
