Dinan Valved Axle-Back Exhaust – BMW M3 / M4 (G80/G82/G83)

OVERVIEW

The Dinan Valved Axle-Back Exhaust for the G80/G82/G83 M3/M4 opens up flow and deepens the exhaust note while retaining full electronic control over volume through the retained factory-style valve. It's a direct bolt-on replacement for the factory axle-back section, engineered to OEM-quality fit and finish and noticeably lighter than the stock system.

SPECS

• T304 stainless steel construction, TIG welded with a brush finish
• 76mm piping (up from 70mm stock)
• Quad 4.5" (114mm) double-walled clamp-on tips, available in polished or black ceramic finish
• Approximately 6 lb lighter than the factory exhaust (38 lb vs. 44 lb)
• +6 hp / +5 lb-ft over stock
• Computer-controlled electronic exhaust valve retained for on-demand volume control
• Direct bolt-on using factory hangers and connection points
• Approx. 2.7 hours of installation labor

PARTS INCLUDED

• Dinan valved axle-back exhaust section, tips in the selected finish
• Required clamps, gaskets, and mounting hardware

TECH RESOURCES

Additional Parts Required

• None.
• Optional: Dinan Dual Exhaust Valve Remote (R660-0002) for manual valve control independent of drive mode.

Installation

• Installation instructions: PDF (Dinan's own installation instructions for this part).

Notes

• Confirm tip finish before ordering — polished (D660-0093) and black ceramic (D660-0093-BLK) are separate part numbers.

PART NUMBER

• D660-0093 — Polished tips
• D660-0093-BLK — Black ceramic tips

VEHICLE APPLICATIONS