Dinan Valved Cat-Back Exhaust for Toyota GR Supra 3.0 | D660-0096

The Dinan Valved Cat-Back Exhaust System (D660-0096) for the Toyota GR Supra 3.0 is the epitome of Sound Without Sacrifice®, evoking passion and excitement with an unmistakably deep, rich, euphonious note. This system retains the flexibility of factory valve control while delivering peak performance gains.

Fabricated from brushed 100% T304 stainless steel and TIG welded, this system is a substantial upgrade. For simplified, freer flow and 10-pounds of weight savings, the stock single-to-dual pipe is replaced by an enlarged 83mm single pipe (vs. 80mm stock). This single pathway feeds into a specialized muffler that limits frequencies associated with drone and delivers the signature low Dinan rumble. The massive dual 4.5" (114.3mm) tips—available in polished stainless steel or black ceramic coated finishes—are emblazoned with the laser engraved Dinan logo, leaving no doubt that this system is above and beyond stock.

Performance & Sound Highlights:

• Maximum Gains: Achieves maximum gains of +6 HP and +5 ft-lb of torque.

• Sportier Sound: Enjoyably louder, deep, rich, and euphonious note—unmistakably Dinan.

• Retained Valve Control: Retains factory valve control for versatility; open for maximum flow/volume, closed for subdued resonant vocals.

• Weight Reduction: 10-pounds lighter than the stock system (Dinan: 46 lbs vs. Stock: 56 lbs).

• Optimized Flow: Features larger diameter piping (83mm) throughout and removes the factory resonator/collector for increased volume and reduced backpressure.

• Premium Aesthetic: Features massive dual 4.5" (114.3mm) double-walled clamp-on tips with a laser engraved Dinan logo.

Product Contains:

• (1) Dinan Valved Cat-Back Exhaust System

• Dual 4.5" (114.3mm) Clamp-On Tips (Polished Stainless Steel OR Black Ceramic Coated)

• All Necessary Mounting Hardware

Installation Instructions