BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW 3 Series E46 (1999-2005)

Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

• Allows for seamless connection between downpipe and cat-back exhaust
• High-quality construction for durability
• Tight seal reduces exhaust leaks
• Enhances overall exhaust flow
• Easy installation and compatibility with various exhaust systems

Free ground shipping!

These Supersprint metallic sport cats are for the E46 M3 with Supersprint's own stepped headers. The piping is slightly oversized and the Supersprint sport cats are much freer-flowing than a traditional stock cat. With less restriction, less effort is required to move the exhaust gasses which will free up horsepower and torque. This cat section will only mount to the Supersprint full stepped headers (p/n 044001) and then to any section 2. These cats are built with O2 sensor bungs pre-installed after the cat if you wanted to extend your stock post-cat O2 sensors (however, special software may still be needed).

Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

Supersprint metallic sport catalytic converters are sourced from HJS of Germany. For 30 years HJS has been supplying motorsports teams with sport cats when rules required them. HJS is now a worldwide leader in sport cat technology and performance. Rally cars, German DTM, and Formula 3 all rely on HJS for clean, reliable horsepower. Supersprint works closely with HJS to spec a catalytic converter that is correct for the vehicle and engine package. This allows for a substantial increase in flow but which, at the same time, keeps the environmental specs within European limits. With any high-flow catalytic converter, special software or other work may be required to keep emissions fault codes and check engine lights from displaying. Supersprint catalytic converters are sold for track and other off-road uses only.

section:stepped section 1 with metallic sport cats

connects to:Supersprint stepped headers; any section 2

material:T304 stainless steel

This product modifies (but does not remove or defeat) emissions equipment. For this reason this product may not be CARB compliant, and therefore not emissions legal in some states. Consult local laws and regulations in your area. For more information on this product, feel free to contact our sales department.

This item fits the following BMWs:
2001-2006 E46 BMW M3

• Stainless steel construction
• Multi-chamber design for increased performance
• Chambered muffler performance sound

Upgrade your vehicle's muffler affordably with the Magnaflow Universal Muffler, providing a solution to loud exhausts without breaking the bank. Crafted from 100% stainless steel, these mufflers are built to endure extreme conditions, ensuring durability and reliability.

Key Benefits:

• 100% stainless steel construction for robustness
• Lap-joint welding ensures solid build quality
• Free-flowing, straight-through design for enhanced performance
• Stainless mesh wrap and acoustical fiber fill deliver a smooth, deep tone
• Packed tightly for long-lasting performance without sound degradation

Features:

• 2.5'' Inlet and Outlet
• 14'' body length
• 20'' overall length
• May require welding/fabricating for fitting; not a direct fit for any specific car model

When building your vehicle for the track, there are a lot of considerations to take into account. One major factor is your exhaust system. Many exhaust systems are only designed for so much exhaust flow, which can really limit the total amount of potential power your engine can produce. To address this issue with heavily tuned, turbocharged, or supercharged E46 M3s, Supersprint now offers a new line of high performance Center Twin-Pipe Exhaust Pipes that are designed to provide you with a significantly higher exhaust flow than their original performance exhaust pipes, 787503 (Resonated) and 787513 (Non-Resonated), designed for street and light track performance.

This twin pipe system utilizes two high flow pipes instead of a single large pipe, allowing for up to 25% greater total exhaust flow. Thanks to the increased total flow, these center pipes are capable of supporting S54 engines producing over 400whp, perfect for all highly modified street cars or performance track vehicles.

This specific option offer's pipes that are non-resonated for a more aggressive sound that is perfect for the track and automotive enthusiast.

Fits the following Vehicles:
2001-2006 E46 BMW M3

• Aggressive, Throaty Sound
• No Highway Drone!
• Rear Muffler Section - a bargain compared to a full system
• Made in the USA
• Lifetime Warranty

Free ground shipping!

This is the original Supersprint street rear muffler for the E46 M3. It's a direct replacement for the stock rear muffler but with less restriction and better flow. This exhaust is not overly loud (conforming to European noise restrictions) and no drone but is larger and heavier than the other Supersprint mufflers. It makes a deeper tone than with slightly more rasp than the stock system.

Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!

section:rear muffler

connects to:stock section 2 or Supersprint section 2

tip style:80mm quad round

material:T304 stainless steel

This item fits the following BMWs:
2001-2006 E46 BMW M3