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Dinan Full Exhaust System - 2020-2024 BMW M340i/M440i

Brand Dinan Reference D660-0085
Full exhaust system Dinan for BMW M340i (2020-2024), BMW M340i xDrive (2020-2024), BMW M440i xDrive (2021-2024) and 3 other model(s). Stainless steel - Polished Tips - G20 / G22 / G23 / G26. max gain +6 @ 6600 RPM hp. Direct bolt-on installation
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Available from the manufacturer 18 in stock at factory
Expected delivery to you on Oct 29, 2026 (data updated 46 minutes ago)
This lead time is an estimate and may change due to circumstances beyond our control
Data updated 46 minutes ago

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Dinan Cat-Back Exhaust for BMW M340i/M440i 2020-2024 (Part No. D660-0085)

Technical

  • specifications Details: Stainless steel - Polished Tips - G20 / G22 / G23 / G26
  • Body material: T304 stainless steel clamps
  • Included: Yes
  • Exhaust tip quantity: 4
  • Finish: Brushed
  • Grade type: Performance
  • Brackets included: Yes
  • Height (in): 10
  • Estimated installation time (h): 2.5
  • Length (in): 54
  • Material: T304 stainless steel
  • Max power gain (hp): 6 @ 6600 rpm
  • Max torque gain (lb-ft): 5 @ 6600 rpm
  • Pipe material: T304 stainless steel
  • Part type: Shaft-Back
  • Tip finish:
  • Polished Weight (lbs): 68
  • Width (in): 29

Key points

  • Power gain: +6 HP @ 6600 rpm, +5 LB-FT @ 6600 rpm
  • Pleasantly louder and sportier sound
  • Quad 4" diameter exhaust tips, double-wall, polished and laser-etched,
  • 100% 304 stainless steel construction
  • Larger-diameter piping for increased flow (76mm vs. 70mm)
  • 4 lbs lighter than the
  • OE system. Original exhaust valve actuator reused and another valve/actuator added on the opposite side, promoting even flow regardless of valve position
  • . Computer-controlled exhaust valves are retained, reducing noise during low-speed driving and fully opening under high load
  • . The dual exhaust valves measure an impressive 76mm in diameter, making them 30% less restrictive than OE valves.
  • Easy bolt-on installation with included mounting hardware

Vehicle fitment

  • BMW M340i (2020-2024) BMW M340i 6-cylinder 3.0L
  • xDrive (2020-2024) BMW M440i xDrive 3.0L 6-cylinder
  • (2021-2024)
  • BMW M440i 3.0L 6-cylinder (2021-2024) BMW M440i 3.0L 6-cylinder
  • (2022-2024)
  • BMW M440i xDrive Gran Coupe 3.0L 6-cylinder (2022-2024) BMW M440i Gran Coupe 3.0L 6-cylinder
  • (2022-2024) 3.0L 6-cylinder

Fitment and technical data provided by Dinan. Check compatibility on the Dinan website before ordering.

Produit mis à jour le: 2026-06-08 11:35:00