BNM Performance V-Band Unequal Length Headers

The BNM Performance Fab V-Band headers are a premium replacement for factory Subaru turbo manifolds, offering the ideal balance between factory-level fitment and high-performance gains. Designed for builders who want more from their setup without compromising reliability, these headers are built by hand using quality stainless steel throughout.

At the heart of this design is the V-Band up-pipe connection, which replaces one of the most failure-prone gasket joints in the OEM system. The result is a more reliable, leak-free seal and easier alignment during installation. The V-Band system also allows subtle adjustment of the up-pipe angle, making it much simpler to align with turbo brackets—especially useful in tight engine bays or modified setups.

BNM offers these headers in both equal and unequal length configurations to suit different performance goals. Equal length headers improve flow balance and are ideal for top-end power and track use. Unequal length headers retain the iconic Subaru "boxer rumble" and provide quicker spool, making them a favorite for street-driven builds. Both versions feature a true 4-1 merge collector, expertly fabricated to direct exhaust gases efficiently toward the turbo for faster response and increased power potential.

These headers are a true bolt-on upgrade for EJ20 and EJ25 single-scroll turbo engines when using the unequal length version. For EJ20 owners looking to run equal length, a 2.5L "triangle" sump will be required to provide the necessary clearance.

Installation Notes:

• Gaskets and hardware are not included. While OEM accessories may be reused if in good condition, it is highly recommended to replace all gaskets and fasteners during installation for long-term reliability.
• Compatible with factory-location turbos.
• Equal length headers require an aftermarket or 2.5L-style oil sump for fitment on EJ20 vehicles.

About BNM Performance Fab

BNM Performance Fab is built on a simple principle: do the job right, or don’t do it at all. Every part that leaves their workshop in the USA is hand-fabricated by a team that lives and breathes high-performance Subaru tuning.

This isn’t mass production. It’s precision fabrication using premium 304 and 321 stainless steel, shaped and welded with care, one piece at a time. From the first cut to the final weld, BNM components are crafted with a deep respect for quality and performance.

These parts are designed for builders who push beyond the factory limits. They’re made to take on high heat, serious boost, and the wear that comes with hard driving. Fitment is spot-on, with designs that install cleanly without modification or frustration.

BNM’s attention to detail is where it really shows. The use of thick, oversized, laser-cut flanges helps eliminate common problems like warping or exhaust leaks, even after countless heat cycles. Every weld, every cut, every finish is made to last.

Whether you’re upgrading a daily driver or building a full track car, BNM parts are built to support your goals now and into the future. They’re trusted by Subaru owners and engine builders who refuse to settle for generic bolt-ons. If your setup demands strength, reliability, and real craftsmanship, BNM delivers.