Spool B58 5" Stainless Steel Race Downpipe

Spool 5 Inch B58 Downpipe Why Settle for the Same Rebranded Downpipes? Let’s face it—most downpipes on the market look the same. They’re just rebranded versions of the same old design with a small, rigid flex section and a laser-engraved logo slapped on. We’re tired of it too. That’s why we created something better. The SPOOL 5-Inch Downpipe is our own design , engineered in-house and quality you can trust. And unlike others, our logo is CNC machined and welded on , not laser engraved. Why Choose the 5-Inch SPOOL B58 Downpipe? Unique, Deep Exhaust Tone: The larger 5-inch diameter creates a richer sound that stands out from the crowd. Easy Installation: Our flexible design makes alignment with your exhaust simple and stress-free—no more fighting with rigid downpipes. Real Performance Gains: Reduced backpressure means faster turbo spool, more power, and smoother flow.

Fits: BMW B58 (Gen 1 and Gen 2) and Toyota GR Supra 3.0. Confirm your engine with us before ordering.

Brand: Spool Performance

For off-road / competition use only. Not legal for use on public roads in the United States, including California.

• Ships from the brand or distributor, usually in 3–7 business days.
• Shipping is charged at the carrier's rate, shown at checkout. Orders over 70 lb ship by freight for a flat $99.
• Unused parts can be returned within 30 days. Some items are marked no-refund in their description.

Full details are on our shipping and returns page.