The Dinan Valved Cat-Back Exhaust for the A90/A91 Toyota GR Supra 3.0 is TIG-welded from brushed 100% T304 stainless steel with no hydroformed pipe. It abandons the factory single-to-dual layout for an enlarged, free-flowing single-pipe design measuring up to 83mm, feeding a drone-limiting muffler that delivers the signature low Dinan rumble while retaining factory valve control for on-demand volume. Removing the factory resonator and collector raises volume, and the system saves 10 pounds over stock while adding up to +6 HP and +5 lb-ft. Gases exit through dual straight-cut 4.5-inch (114.3mm) double-walled tips laser engraved with the Dinan logo.
| Type | Valved cat-back exhaust |
| Position | Cat-back (full system aft of catalysts) |
| Material | 100% T304 stainless steel, TIG-welded, brushed |
| Tubing Diameter | Up to 83mm (vs 80mm stock) |
| Tips | Dual 4.5in (114.3mm) double-walled clamp-on, straight cut, laser-engraved Dinan logo |
| Tip Finish | Black ceramic coated |
| Power Gain | +6 HP / +5 lb-ft (max) |
| Weight Savings | 10 lb lighter (46 lb vs 56 lb stock) |
| Part Number | D660-0096-BLK |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2022 | Toyota | GR Supra | A91 Edition |
| 2020-2026 | Toyota | GR Supra | Base |
| 2020-2026 | Toyota | GR Supra | Premium |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
