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Active Autowerke BMW Catalytic Converters

Our Catalytic Converters are the same quality construction as OEM but at a third of the cost! These are a direct replacement for the original BMW catalytic converter. These bolt on to your stock exhaust manifold and muffler, no welding required. We offer cats for both pre-OBDII BMW's (pre 1996) and BMW's with OBDII (1996+). We offer both 50 state legal converters and less expensive 49 state versions. Meets all EPA and CARB requirements. A factory warranty is included: 5 year/25,000 for 49 State versions, and 5 years/50,000 miles on 50 State legal versions.
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Active Autowerke AFlow Catted Downpipe - B58N G06/G06/G07
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For 2024+ Models -- Please call in with vin prior to purchase
Active Autowerke - Corporate Logo
T#:51426482
Part#: 11-062NA
Ships in 10 Business Days
New Item
$ 1,519.00 USD
Free Shipping
$ 1,519.00 USD
Free Shipping
Active Autowerke brings motorsport technology to street-legal applications with the B58N Aflow Catted Downpipe. This system features a high-efficiency 400 Cell Per Square Inch (CPSI) Active Aflow catalytic converter that is EPA registered and 49-state legal. By utilizing proprietary precious metal loading, this catalyst reaches operational efficiency within just 9 seconds of startup, ensuring the vehicle remains fully OBD2 compliant. The furnace-brazed stainless steel substrate ensures extreme durability under high-boost conditions. This downpipe provides the flow characteristics of a race pipe while effectively neutralizing harmful emissions and odors, protecting both the environment and the vehicle's passengers. Key Features Active AFlow High-Flow Catalyst: 400 CPSI substrate designed to provide maximum flow while maintaining EPA compliance. Rapid Light-Off Time: Reaches operational efficiency within 9 seconds, ensuring OBD2 readiness monitors remain active. Forced Induction Optimized: Specifically engineered for high-boost applications with zero loss in horsepower. Extreme Heat Resistance: Built to withstand internal exhaust gas temperatures (EGTs) up to 1500°F. Durable Construction: Substrate is furnace-brazed to the mantle, preventing the internal core from shifting or breaking under heavy vibration. Specifications Vehicle Fitment: 2025+ BMW B58N Models (X3-40i, X3-M50i, X5-40i, X7-40i, 540i, 640i, 740i). Cell Density: 400 Cells Per Square Inch (CPSI). Catalyst Material: 304 Stainless Steel Substrate. Compliance: EPA Registered / 49-State Legal (Not CARB registered for California). Warranty: 5-Year/50,000-Mile on shell/ends; 2-Year/25,000-Mile on the catalytic core (Warranty void with "burble" tunes).
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Active Autowerke AFlow Catted Downpipe - B58N G20/G22 M340/M440i ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For 2025+ model year vehicles -- Please call in with vin prior to purchase
Active Autowerke - Corporate Logo
T#:51426483
Part#: 11-062GA
Ships in 10 Business Days
New Item
$ 1,899.00 USD
Free Shipping
$ 1,899.00 USD
Free Shipping
Active Autowerke brings professional-grade emissions technology to the 2025+ BMW G-Chassis with the AFlow Catted Downpipe. This system utilizes the advanced Active AFlow Super High Output Catalytic Converter, which is EPA registered and 49-state legal. By employing an ultra-high-flow 400 Cell Per Square Inch (CPSI) substrate, this downpipe provides the flow characteristics of a race-pipe while maintaining full OBD2 compliance. The catalyst is designed to reach operational efficiency within just 9 seconds of startup, ensuring that emissions standards are met quickly. This is the premier choice for enthusiasts seeking a refined exhaust note and increased power without the raw fuel smell or environmental concerns of a catless system. Key Features: Active AFlow 400 CPSI Catalyst: High-density 304 stainless steel substrate furnace-brazed to the mantle for extreme durability under high boost. Rapid Light-Off Time: Achieves operational efficiency within approximately 9 seconds of engine start. Forced Induction Optimized: Specifically rated to handle high-boost applications with zero loss in horsepower. Thermal Management: Engineered to withstand internal exhaust gas temperatures (EGTs) up to 1500°F. Environmentally Conscious: Effectively reduces harmful emissions and noise, protecting both passengers and the ecosystem. Specifications: Vehicle Fitment: 2025+ BMW M340i and M440i (G20/G22 Chassis). Catalyst Cell Density: 400 Cells Per Square Inch (CPSI). Catalyst Substrate: Full 304 Stainless Steel. Warranty: 5-Year/50,000-Mile on shell/ends; 2-Year/25,000-Mile on the catalytic core (Voided by "excessive burble" tunes). Compliance: EPA Registered / 49-State Legal (Not CARB registered for California).
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