Untd. Performance Catless Downpipe – Mclaren 650S/MP4-12C 3.8 V8

Unlock the raw, unrestricted power of your McLaren with the Untd. Performance Catless Downpipe, specifically engineered for the 650S and MP4-12C with the 3.8L twin-turbo V8. Designed for maximum performance and race-inspired sound, this downpipe replaces the factory catalytic converters with a straight-through, free-flowing setup—reducing backpressure, improving turbo efficiency, and completely transforming the character of your supercar.

Whether you’re chasing lap times or simply want more from every throttle input, this downpipe is the upgrade your McLaren deserves.

Key Features:

Catless Design for Peak Performance
By removing the restrictive OEM catalytic converters, this downpipe allows your twin-turbo V8 to breathe freely. The result is improved turbo spool, quicker throttle response, and increased horsepower and torque across the RPM range. Ideal for track builds and performance-focused driving where emissions compliance is not a concern.

Aggressive, Race-Inspired Sound
With the cats removed, the 3.8L engine’s raw character comes alive. The exhaust note becomes louder, deeper, and far more aggressive—accentuating turbo spool and creating visceral crackles and pops that bring an unmistakable motorsport presence to the road or track.

Maximized Turbo Efficiency
Reduced exhaust restriction means quicker boost response and more consistent power delivery. The turbos spool faster, allowing you to tap into peak torque earlier and hold it longer, making this a must-have for tuned or high-performance builds.

Premium Stainless Steel Construction
Built from high-grade T304 stainless steel, the downpipe is TIG-welded for strength and precision. Designed to withstand extreme exhaust temperatures and pressures, it delivers reliability and performance without compromise.

Precision Fitment
Engineered to match OEM specifications, the downpipe offers a direct bolt-on installation with factory or aftermarket exhaust systems. CNC-machined flanges ensure a secure, leak-free connection and perfect alignment for hassle-free setup.

Compatibility:

• McLaren 650S (3.8L Twin-Turbo V8)

• McLaren MP4-12C (3.8L Twin-Turbo V8)

Whether you’re upgrading for the track or looking to unleash your McLaren’s full sound and power potential, the Untd. Performance Catless Downpipe delivers serious performance benefits and an unmatched auditory experience.

Note: This product is intended for off-road and racing use only. It is not emissions-compliant and should be installed where local laws permit. Please check your regional regulations before installation.