Borla 621105 Universal 2.75in X-Pipe T-304 Stainless Steel Custom Dual Exhaust

Vehicle Fitment

• Universal fit - no vehicle-specific fitment. Designed for custom dual exhaust fabrication on any vehicle with a 2.75" dual exhaust system. Verify your system's pipe diameter and available underbody clearance before ordering.

Fitment Notes

• Designed for 2.75" dual exhaust systems. Inlet and outlet diameter is 2.75" on both sides of the X-crossing. Inlet centerline spacing is 3.66"; outlet centerline spacing is 4.05" - confirm these dimensions suit your chassis and pipe routing before ordering.
• Overall length is 26.98". Verify available underbody clearance at your intended installation location, as the X-pipe configuration is wider and more complex to route than an H-pipe on some chassis.
• For 2.5" dual exhaust systems, see Borla PN 621104. For 3" dual exhaust systems, consult Borla's universal X-pipe lineup.
• Sold individually (one X-pipe assembly).
• Installation requires welding or clamping into the existing exhaust system. Professional installation by a qualified exhaust fabricator is recommended for custom builds.

Features

• X-pipe crossover design merges the two banks of a dual exhaust system at a diagonal crossing junction, allowing exhaust gases from any cylinder to flow through either tailpipe - improving high-RPM exhaust scavenging efficiency and delivering a higher-frequency, more blended exhaust tone compared to an H-pipe's parallel crossover.
• X-pipe configurations are particularly effective at improving top-end power without sacrificing mid-range torque, making this a preferred crossover style for performance-oriented custom exhaust builds and engine swaps.
• Mandrel-bent tubing maintains consistent 2.75" cross-section through every bend and through the X-crossing itself - eliminating the flow-restricting crimps and restrictions that are common in pressed or stamped crossover pipes.
• T-304 austenitic stainless steel construction throughout - superior corrosion resistance and heat stability compared to aluminized or mild steel, and stainless inside and out unlike T-409 series materials used in lower-tier alternatives.
• CNC precision manufacturing ensures consistent dimensions, accurate centerline spacing, and repeatable quality on every unit.
• Made in the USA. Backed by Borla's Million-Mile Warranty.

Specifications

• Part Number: 621105
• Type: Universal X-Pipe
• Pipe Diameter: 2.75" Inlet / 2.75" Outlet
• Inlet Centerline Spacing: 3.66"
• Outlet Centerline Spacing: 4.05"
• Overall Length: 26.98"
• Material: T-304 Austenitic Stainless Steel
• Construction: Mandrel-Bent, CNC Manufactured
• Universal Fitment: Yes
• Quantity: Sold Individually
• Origin: Made in the USA
• Warranty: Million-Mile Warranty

Included Components

• 1x T-304 Stainless Steel Universal X-Pipe Assembly (2.75")
• Note: Clamps, flanges, and additional exhaust piping are not included. Welding or clamping required for installation.

Product Description

The Borla 621105 is a universal 2.75" T-304 stainless steel X-pipe for custom dual exhaust fabrication - suitable for engine swaps, custom builds, and any dual exhaust application using 2.75" piping where an X-pipe crossover is desired. Unlike H-pipe crossovers, the X-pipe's diagonal junction allows exhaust gases from any cylinder to access either side of the system simultaneously, improving exhaust scavenging efficiency at higher RPM and producing the higher-frequency, more blended exhaust note that X-pipe configurations are known for.

At 26.98" overall length with 3.66" inlet and 4.05" outlet centerline spacing, this unit is suited to a wide range of chassis and routing configurations. Mandrel-bent tubing and CNC manufacturing ensure consistent 2.75" diameter throughout, with no crimps or restrictions at the crossing. Sold individually - dual exhaust builds requiring a single crossover need one unit. Made in the USA and backed by Borla's Million-Mile Warranty.