Description
The Dinan axle-back exhaust changes the sound and rear appearance of 2021-2026 BMW M3. This version supplies polished exhaust tips.
The system retains factory valve operation, using the muffler path for a more subdued note and an alternate flow path when the valves open. That gives the driver a wider range of sound character through the vehicle’s original control strategy.
With the valves closed, the muffler route exits through the inner tips. Opening the valves allows most flow to bypass the muffler, increasing sound output under the factory control strategy.
Technical details
- Valve operation: factory-controlled valves retained.
- Construction: T304 Stainless Steel.
- Tip finish: Polished.
- Tubing diameter: 76mm versus 70mm in the original system.
- Listed vehicle application: 2021-2026 BMW M3.
- Manufacturer part number: D660-0093.
Fitment and installation
- Confirm body style, drivetrain and the original rear-valance configuration. Review the installation procedure for cutting, joining and valve-transfer requirements.
- The optional Dinan middle exhaust is sold separately; it is not included with this axle-back.
- A stronger exhaust note does not mean zero cabin resonance; other modifications can change the sound substantially.