Spool B58 Gen 3 Race Downpipe

Spool Performance products are what we use in our own builds at Racebox. Quality parts, backed by their lifetime warranty.

WE CANNOT GUARANTEE FITMENT ON YOUR 2025 BMW B58, PLEASE BE SURE TO CHECK YOUR DIAGRAM AND MAKE SURE THIS MODEL IS A COMPATIBLE MODEL. WE CAN ASISST, JUST SEND YOUR VIN TO US.

EMAIL: SALES@SPOOLPERFORMANCE.US

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

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.