What is the main difference between this cat-back exhaust and a full turbo-back system?

A cat-back exhaust system replaces the exhaust components from the catalytic converter back to the tailpipe. A turbo-back system replaces everything from the turbocharger outlet all the way back, including the catalytic converter itself.

Will this exhaust system affect my car's warranty?

Modifying your exhaust system may affect your vehicle's warranty coverage for related components. It's always best to consult your vehicle's warranty documentation or your dealership for specific details.

Does this exhaust system come with all the necessary hardware for installation?

This GReddy Supreme SP exhaust system is designed as a direct bolt-on replacement and typically includes the necessary mounting hardware for installation. Refer to the manufacturer's included parts list for exact contents.

GReddy 2015+ Lexus RC350 (Excl F-Sport) Supreme SP Exhaust

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Specifications

Brand: GReddy
Part #: 10118204

GReddy 2015+ Lexus RC350 (Excl F-Sport) Supreme SP Exhaust

Name: GReddy 2015+ Lexus RC350 (Excl F-Sport) Supreme SP Exhaust
Brand: GReddy
Price: 916.48 USD
Availability: InStock

$916.48

On Backorder — Expected to ship by Aug 9, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 2015-2020 Lexus RC350 (Excl F-Sport). GReddy Supreme SP Cat-Back Exhaust for improved sound and performance.

Key Features

Fits 2015-2020 Lexus RC350 (Excludes F-Sport models).
Constructed from polished SUS304 stainless steel for strength and corrosion resistance.
Features larger diameter piping and a free-flowing muffler to reduce backpressure.
Designed to improve throttle response and overall engine performance.
Produces a deeper, sportier exhaust note compared to the factory system.
Cat-back design bolts directly to the factory catalytic converter for easier installation.

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Fits this vehicle

Lexus RC350 2015-2020

Product Details

If you're looking to give your 2015-2020 Lexus RC350 a more aggressive sound and improved exhaust flow, this GReddy Supreme SP cat-back exhaust system is a solid choice. Designed specifically for the RC350, excluding F-Sport models, this system replaces the factory muffler and piping from the catalytic converter back, opening up the exhaust path for a better driving experience.

GReddy is well-known for its performance exhaust systems, and the Supreme SP line is built with durability and sound quality in mind. This system is constructed from polished SUS304 stainless steel, which is strong and resists corrosion, ensuring it holds up well over time. The larger diameter piping and the free-flowing muffler are engineered to reduce backpressure, which can lead to a more responsive throttle and a noticeable increase in horsepower and torque. You'll get a deeper, sportier exhaust note that's more pronounced than stock, but still refined enough for daily driving without being overly loud or droney.

Installation involves removing your factory exhaust and bolting this system in its place. Because it's a cat-back system, it's designed to fit directly with your existing catalytic converter, simplifying the installation process. This GReddy exhaust is a great way to enhance the performance and sound of your RC350, giving it that extra edge you're looking for.