Dinan Resonator Delete Kit - 2020-2025 BMW X3M/X4M

On the X3 M and X4 M, the factory resonator between the catalysts and the rear muffler takes a lot of the edge off the S58's sound. Dinan's kit pulls it out and puts a mandrel-bent X-pipe in its place, so the car gets louder, smoother and fuller without changing the rear silencers.

What you get

• Resonator removed and replaced with 70 mm T304 stainless steel tubing for freer flow.
• Mandrel-bent X-pipe instead of a stamped crossover, for less restriction.
• More even flow to both sets of tips, which cleans up uneven, raspy notes common to stock systems.
• More volume and a more aggressive tone than the factory exhaust.

Good to know

• Dinan designed it to pair with its axle-back exhaust for these cars, which deepens the sound further.

Brand: Dinan · Part #: D660-0087

• 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.