Untd. Performance 3.5″ Catless Downpipe – Mercedes-Benz – C63 M177 W205

Maximize the performance of your Mercedes-Benz C63 AMG with the Untd. Performance 3.5″ Catless Downpipe. Engineered for the M177 4.0L Bi-Turbo V8, this catless downpipe is designed to eliminate the restrictive factory catalytic converters, allowing for improved exhaust flow and reduced backpressure. With the larger 3.5″ diameter, this downpipe ensures optimal turbo efficiency, quicker spool times, and a massive increase in horsepower and torque—transforming your W205 C63 AMG into a track-ready performance machine.

Key Features:

3.5″ Catless Design
The Untd. Performance Catless Downpipe removes the restrictive OEM catalytic converters, offering a 3.5″ diameter pipe to maximize exhaust flow. By reducing backpressure, this upgrade improves turbo spool time and increases both low-end torque and top-end power, providing a more responsive driving experience and increased performance across the RPM range.

Aggressive Exhaust Sound
The removal of the catalytic converters allows the M177 engine’s true sound to be unleashed. Expect a louder, more aggressive exhaust tone with deeper growls and sharper turbo spool, along with crackles and pops on deceleration. This downpipe ensures your C63 AMG sounds as powerful as it performs.

Built for Performance
Crafted from high-quality 304 stainless steel, this downpipe is designed to withstand the high heat and pressures generated by the M177 4.0L Bi-Turbo V8 engine. The durable construction, TIG welds, and CNC-machined flanges ensure long-term reliability and a secure, leak-free fitment that will hold up to extreme driving conditions.

Enhanced Turbo Efficiency
By reducing backpressure and improving exhaust flow, this downpipe enables your turbochargers to spool quicker and more efficiently. This results in faster throttle response, reduced turbo lag, and a significant improvement in overall engine performance—perfect for spirited driving or track use.

Bolt-On Installation
This downpipe is designed to be a direct replacement for the factory unit, offering a seamless bolt-on installation with no cutting or welding required. It’s the ideal upgrade for owners who want a simple yet effective way to increase the performance of their C63 AMG without the hassle of custom fabrication.

Compatibility:

• Mercedes-Benz C63 AMG – M177 4.0L Bi-Turbo V8 (W205, C205, S205)

The Untd. Performance 3.5″ Catless Downpipe is a must-have for anyone looking to get the most out of their Mercedes-Benz C63 AMG. It delivers more power, quicker turbo spool, and a more aggressive exhaust tone—turning your M177-powered C63 into an even more exhilarating driving machine.

Note: This product is intended for off-road and motorsport use only and is not emissions-compliant in all areas. Be sure to verify local laws and regulations before installation.