Borla XR-1 Raceline Sportsman Universal 3.5-Inch Center Inlet to 3.5-Inch Center Outlet T-304 Stainless Steel Round Racing Muffler (40086)
Experience the ultimate balance of track legal acoustic suppression and restriction free exhaust velocity with the Borla XR-1 Raceline Sportsman Performance Muffler. Masterfully developed for high horsepower race setups, extreme street machines, and demanding competitive applications, this heavy duty universal unit delivers the elite performance flow metrics that professional racers rely on to win championships. At its engineering core, this 3.5-inch straight through muffler breaks away from power robbing chambered barriers by utilizing an ultra high flow, straight through internal geometry configuration. This unrestricted inner layout optimizes exhaust gas velocity and clearing efficiency, completely eliminating backpressure bottlenecks to maximize peak horsepower and broad torque delivery across your entire RPM band.
The structural engineering of the Borla 40086 addresses structural fatigue beneath harsh track conditions through a heavy gauge, 100% welded assembly. Enclosed in a compact 5-inch round by 15-inch long barrel body with a total 20-inch overall length footprint, this sleek canister delivers exceptional space optimization when tucked into tightly packaged race car undercarriages, custom floor pans, or low profile truck frames. Inside, the core is wrapped in premium, high temperature continuous filament fiber acoustic packing material, which regulates sound frequency boundaries while easily resisting high thermal degradation from extreme engine setups. Built entirely from CNC machined, premium grade T-304 austenitic stainless steel, this robust racing muffler provides maximum resistance against rust, corrosion, and heat fatigue under extreme racing loads. The exterior features a clean natural mill finish that can be easily brushed or mirror polished prior to final installation, delivering an elite show quality appearance to match its race proven performance footprint.
Reversible Configuration & Straight Through Dynamics: Unlike directional mufflers that restrict installation options, the Borla XR-1 Sportsman features a fully symmetric, completely reversible configuration. This allows chassis fabricators and performance exhaust builders the absolute maximum flexibility to flip, rotate, and position the canister in either direction to achieve perfect clearance around drive shafts, links, and frame rails without altering internal exhaust flow dynamics or acoustic attenuation properties.
Fabrication Installation Guideline Note: This high performance XR-1 racing muffler is built with smooth, unnotched 3.5-inch attachment collars engineered explicitly for a permanent, leak free weld on installation by a professional fabricator. For applications requiring a removable slip fit connection, wide two bolt style exhaust band clamps must be utilized (clamps are not included with this canister assembly).
Features
- Race Proven XR-1 Flow Technology: Straight through core geometry eliminates restriction to unleash maximum peak horsepower and broad torque delivery
- High Flow 3.5-Inch Internal Diameter: Massive 3.5-inch center inlet and center outlet layout engineered for high displacement and high output racing engines
- Fully Reversible Design Profile: Bi-directional internal architecture allows the muffler to be flipped or rotated to maximize chassis installation flexibility
- Continuous Filament Fiber Acoustic Matrix: Premium high temperature CFF packing material delivers elite sound control and extreme resistance to thermal degradation
- Compact Round Body Architecture: 5-inch round barrel shape tucks cleanly into tight drag strips, dirt tracks, and custom street rod frames
- Heavy Duty 100% Welded Body: Fully welded seams deliver supreme structural integrity to withstand intense backfires and track 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
- Customizable Exterior Finish: Natural mill finish can be easily custom brushed or high mirror polished prior to undercar installation
- Proudly Manufactured in the USA: Built in America using high precision CNC processes to guarantee flawless fitment and elite race proven quality
Detailed Fitment Breakdown & Application Parameters
Universal Fitment Parameters & Fabrication Structural Boundaries:
This premium XR-1 Raceline Sportsman muffler does not feature a direct year, make, and model automotive catalog listing. Instead, it is a **Universal Fit** racing component targeted and engineered for custom vehicle platforms, drag racing vehicles, drift cars, pulling trucks, and extreme street machines requiring a heavy duty 3.5-inch exhaust path layout.
Target Engine Family Compatibility:
- Ideally suited for high horsepower naturally aspirated V8 engines, forced induction turbo applications, supercharged configurations, and high flow diesel or petrol race builds
- Commonly utilized in custom drag cars, pro street builds, custom trail trucks, oval track racers, and custom muscle car dual or single exhaust systems
Sizing, Connection & Dimensional Details:
Fits your project layout across these exact structural specifications:
- Inlet Connection Size: 3.50-Inch internal diameter center port neck
- Outlet Connection Size: 3.50-Inch internal diameter center port neck
- Muffler Case Configuration: 5.00-Inch round structural shape
- Muffler Case Body Length: 15.00 Inches of primary high temperature sound control coverage
- Overall Muffler Total Length: 20.00 Inches from inlet tip to outlet tip boundary
- Internal Architecture Matrix: Symmetric, reversible straight through high flow racing configuration
- 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.
* Installation Flexibility: This is a non directional component. It can be installed in either flow direction to accommodate tricky undercar exhaust routing layouts.
* Fabrication Requirements: Features smooth, unnotched collars engineered for weld-in installation. Professional fabrication, welding, or wide two bolt style band clamps are necessary for a perfect undercar fit.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
