![Spool VR30DTT Full 4 Inch Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]](http://spoolperformance.com/cdn/shop/files/IMG-3787.png?v=1770202674 "Spool VR30DTT Full 4 Inch Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]")
![Spool VR30DTT Full 4 Inch Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]](http://spoolperformance.com/cdn/shop/files/IMG-3786.jpg?v=1770202674)
![Spool VR30DTT Full 4 Inch Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]](http://spoolperformance.com/cdn/shop/files/IMG-3784.jpg?v=1770202674)
Spool VR30DTT Full 4 Inch Downpipes Upgrade [Race Downpipes] | Infinit
Infiniti Q50 / Q60 / Nissan Z (RZ34)
The Spool Performance 4” Fat Boi Race Downpipes are designed to improve exhaust flow while refining sound quality on the VR30DTT platform.
The oversized 4-inch section is engineered specifically to smooth exhaust tone, reducing high-frequency harshness and rasp while maintaining a deep, aggressive character under load. This design allows for a more controlled, intentional sound without sacrificing performance.
Constructed from mandrel-bent 304 stainless steel, these downpipes are fully TIG-welded and utilize CNC-machined mounting brackets to ensure precise fitment and long-term durability. Each set includes all necessary hardware and accommodates both 2.5-inch and 3-inch exhaust outlets.
Currently in stock and ready to ship.
4-inch section for improved exhaust tone
Mandrel-bent tubing for smooth exhaust flow
Fully TIG-welded 304 stainless steel construction
CNC-machined brackets for accurate fitment
Includes all required installation hardware
Compatible with 2.5” and 3” exhaust systems
LEGAL DISCLAIMER: This product is intended solely for closed-course competition or off-road use and is not legal for use on public roads or highways. This product modifies or replaces emissions-related equipment and is not compliant with EPA or CARB emissions requirements. Use of this product on vehicles operated on public roads is prohibited. By purchasing this product, the buyer acknowledges and assumes all responsibility for proper use and legal compliance.
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