Dinan Valved Axleback Exhaust - Polished Tips - BMW G20 330i / G22 430i

The factory G20/G22 B48 exhaust exits through 60mm pipes — a significant bottleneck relative to the 85mm inlet. Dinan's axleback expands the exits to 83mm per side, increasing the outlet-to-inlet ratio while retaining the factory valve control for quiet low-speed operation. The result is +4 HP and +3 lb-ft of torque, a genuinely deeper exhaust note unexpected from a 2.0L four-cylinder, and dual 4" (102mm) polished double-walled tips at the rear that make the stock 90mm slash-cuts look undersized. 100% T304 stainless steel, TIG welded, drone abatement engineering, factory bracket fitment. No coding required.

Features:

+ +4 HP and +3 lb-ft torque on the B48
+ Expanded exit piping: 83mm per side vs. stock 60mm
+ Dual 4" (102mm) polished double-walled laser-engraved tips
+ Retains factory valve control — drone abatement engineering
+ 100% T304 stainless, TIG welded — BMW G20 330i / G22 430i fitment (B48)