SLE 5-Inch Catless Downpipe – BMW B58 (F-Series / G-Series) / Toyota Supra A90 A91

SLE 5-Inch Catless Downpipe – BMW B58 (F-Series / G-Series) / Toyota Supra A90 A91

Product Description:

The SLE 5-Inch Catless Downpipe is engineered to maximize exhaust flow, reduce backpressure, and enhance turbocharger efficiency on B58-powered BMW and Toyota Supra models. Featuring a full 5-inch diameter design, this downpipe significantly improves exhaust velocity, turbo spool, and overall throttle response while delivering a deeper, more aggressive exhaust tone.

Constructed from high-quality T304 stainless steel with precision TIG welding, the SLE Downpipe is a direct bolt-on replacement that supports both stock and tuned setups. Whether for daily driving or high-performance use, expect measurable gains in horsepower, torque, and driving engagement.

Product Features

• Full 5-inch diameter for maximum exhaust flow and reduced backpressure

• High-flow catless design optimized for performance

• T304 stainless steel construction with TIG-welded joints

• CNC-machined flanges for precise, leak-free fitment

• Smooth transitions to improve exhaust velocity

• Direct bolt-on installation using OEM mounting points

• Noticeable gains in turbo spool, throttle response, and exhaust tone

• Enhanced sporty exhaust sound under load and acceleration

Vehicle Compatibility (B58 Engine Models Only)

F-Series

• F22 BMW M240i (2017–2021)

• F30 BMW 340i Sedan (2016–2018)

• F32 BMW 440i Coupe (2017–2020)

• F33 BMW 440i Convertible (2017–2020)

• F36 BMW 440i Gran Coupe (2017–2020)

• F25 BMW X3 M40i (2017–2018)

• F26 BMW X4 M40i (2017–2018)

G-Series

• G20 BMW M340i Sedan (2019–Present)

• G22 BMW M440i Coupe (2021–Present)

• G23 BMW M440i Convertible (2021–Present)

• G42 BMW M240i Coupe (2022–Present)

• G29 BMW Z4 M40i (2019–Present)

• G01 BMW X3 M40i (2019–Present)

• G02 BMW X4 M40i (2019–Present)

Toyota

• A90 Toyota Supra GR (2020–2022)

• A91 Toyota Supra GR (2021–Present)

Note: For off-road use only. An ECU tune is required to maximize performance and prevent check engine lights.