Racing Dynamics Catted Downpipes / BMW / M2 / M3 / M4 / S55 | 130-10-55-450

• This model replaces the restrictive OEM catayltic converters with 200 cell sport cats for increased HP and Torque.
• Gen2 version is the 2nd generation of our downpipes and now incorporates flex joints to absorb engine/chassis vibration and improve installation.
• These downpipes now incorporate heat shielding over most of their lengths to reduce radiant heating into cabin and engine compartment.
• This downpipe fits BMW 2 series M2 Competition and BMW 3 and 4 series, F80/F82 M3/M4 with S55 turbocharged 3.0 liter inline-6 motor.
• Removing exhaust flow restrictions increases horsepower and torque significantly.
• Our Gen2 M3/M4 downpipes are now a full 76mm (3") in diamter for best air flow. Low cost versions are generally only 70 mm (2.75")
• Improves throttle response and generally improves turbo spool up.
• Downpipes are manufactured out of 304 stainless steel.
• Straight-through tubing section replaces the heavy and restrictive OEM catalytic converters for maximum power and sound. Straight-through design improves horsepower and torque significantly
• Direct bolt-on replacement for OEM primary catalytic converters.
• Our Gen2 downpipes now include heatshield covering over 90% of the downpipes
• Less thermal load on the turbocharger
• Recommended for track/off-road use only.

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