Designed Exclusively for Gen 3 B58 Models
Spool Performance downpipes for the Gen 3 B58 engine are built with a 4” design, precision-machined stainless steel v-band transition, and uncompromising attention to flow and fitment. Unlike most options on the market that taper down near the turbo, our downpipes maintain consistent diameter and a true 3D profile to maximize exhaust velocity and overall performance.
Crafted from high-grade 304 stainless steel, these downpipes are built to handle extreme conditions with superior corrosion resistance and long-term reliability.
Key Features:
- Significant horsepower and torque gains
- Sharper throttle response and quicker turbo spool
- Reduced turbo lag
- Aggressive, refined exhaust tone
- Precision CNC-machined construction for a perfect seal
Note: Professional installation is recommended. A tune is required to prevent a check engine light (CEL).
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