The F97 X3 M and F98 X4 M leave the factory with a hydroformed resonated section between the catalysts and the rear muffler that mutes much of the S58 inline-six. This Dinan kit removes that section and replaces it with 2.75 in. T304 stainless tubing and a mandrel-bent X-pipe, adding volume and a fuller tone while balancing flow to both banks of tips. It bolts in on its own or pairs with a Dinan rear exhaust for the full effect.

Dinan D660-0087 Features:

• Deletes the factory resonator between the catalysts and rear muffler for increased exhaust volume.
• Mandrel-bent X-pipe crossover promotes even flow to both banks of tips with minimal restriction, unlike stamped X-pipes.
• 2.75 in. tubing replaces the stock hydroformed piping.
• All 304 stainless steel construction with a brushed finish.
• Weighs 8 lbs. compared with 10 lbs. for the OEM section.
• Bolt-on installation with included mounting hardware; estimated labor time is 2.5 hours.

Compatibility Notes:

• Fits 2020-2024 BMW X3 M and 2020-2025 X4 M, including Competition models, with the 3.0L inline-6 engine.