Borla 2.75-Inch Universal Merge X-Pipe

Balance a Custom Dual Exhaust with a 2.75-Inch Merge X-Pipe

Borla 621105 is a universal merge X-pipe for custom dual-exhaust fabrication. Its dual 2.75-inch inside-diameter inlets, dual 2.75-inch outside-diameter outlets, defined centerline spacing, and T-304 stainless-steel construction give a fabricator a verified dimensional starting point for balancing exhaust pulses and shaping the finished exhaust note.

Key Features

• Universal merge X-pipe design for custom dual-exhaust systems
• Premium T-304 austenitic stainless steel for corrosion resistance and durability
• Mandrel-formed flow path designed to reduce unnecessary restriction
• Dual 2.75-inch I.D. notched inlets for slip-fit clamp connections
• Dual 2.75-inch O.D. un-notched outlets for custom fabrication
• Precision CNC manufacturing supports consistent dimensions and alignment
• Backed by Borla’s Million-Mile Warranty for eligible non-moving components

Fitment

This is not a direct-fit vehicle application. Vehicle year, make, and model alone do not establish compatibility.

Specifications

What’s Included

• One Borla 2.75-inch universal merge X-pipe
• Clamps, hangers, gaskets, tubing, and fabrication hardware are not included

About Borla

Borla develops stainless-steel exhaust systems and universal fabrication components for street, performance, and custom applications. Its exhaust products are engineered around corrosion-resistant materials, controlled manufacturing, and application-specific or dimension-specific selection.

Related Parts

• Borla 2.75-inch AccuSeal clamp – the manufacturer-recommended 1-inch-wide clamp style for the notched inlet connections. Two clamps are required for both inlets.

FAQ

What is the 621105?

It is Borla’s universal T-304 stainless-steel merge X-pipe with dual 2.75-inch inlets and outlets for custom exhaust fabrication.

Is this a direct-fit X-pipe?

No. It is a universal fabrication component, so the installer must verify pipe diameters, centerline spacing, length, clearance, and connection method.

What are the inlet and outlet diameters?

The two inlets are 2.75-inch inside diameter, while the two outlets are 2.75-inch outside diameter.

Are exhaust clamps included?

No. Borla specifies 1-inch-wide band clamps for the notched inlets and wide two-bolt-style band clamps for the un-notched outlets.

Can this X-pipe be welded into the exhaust?

Yes, when the fabrication plan and adjoining materials support welding. A qualified exhaust fabricator should choose the final connection method and protect nearby components.

Will this X-pipe fit any vehicle with a 2.75-inch exhaust?

Not automatically. The system must also match the inlet and outlet arrangement, centerline spacing, overall dimensions, clearance, and intended exhaust routing.

What material is used?

Borla specifies premium T-304 austenitic stainless steel with a natural mill finish.

What warranty applies?

Borla lists its Million-Mile Warranty for eligible non-moving exhaust components. Warranty coverage remains subject to the manufacturer’s current terms and installation requirements.

Installation Instructions

1. Allow the exhaust system to cool completely and support the vehicle using approved lifting equipment.
2. Measure the existing tubing, centerline spacing, available length, ground clearance, and surrounding heat-sensitive components.
3. Confirm the planned flow direction and mark the final X-pipe position before cutting any tubing.
4. Cut and deburr the adjoining pipes, then clean the mating surfaces.
5. Test-fit the X-pipe without forcing the exhaust out of alignment or preloading hangers.
6. Use the specified clamp style or an appropriate professional welding process for each connection.
7. Align the complete exhaust, tighten or finish all connections, and verify clearance through the suspension’s range of movement.
8. Start the engine, inspect for exhaust leaks, and recheck the connections after the first complete heat cycle.

California Proposition 65 Warning: Welding, brazing, thermal cutting, or similar work on this product can expose users to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.