ALR Performance 4.5” B58 Catless Downpipe
ALR Performance 4.5” B58 Catless Downpipe
Unlock the sound and performance your B58 was built for with the ALR Performance 4.5” Catless Downpipe.
Designed to replace the restrictive factory catalytic converter, our 4.5” downpipe provides increased exhaust flow, reduced backpressure, quicker turbo response, and a significantly more aggressive exhaust note. Whether you’re running a stock turbo or pushing a higher-power upgraded setup, this downpipe gives your B58 the airflow it needs.
Features
- Massive 4.5” high-flow design
- Catless construction for maximum exhaust flow
- Improved turbo spool and throttle response
- Supports stock and upgraded turbo applications
- Aggressive B58 exhaust tone
- Durable stainless-steel construction
- Direct-fit design for straightforward installation
- Built for tuned, high-performance applications
Fitment
Please select your BMW model, year, and B58 generation before ordering to ensure correct fitment.
What’s Included
- ALR Performance 4.5” Catless Downpipe
- Required downpipe hardware as applicable
ALR PERFORMANCE — BUILT TO PERFORM.
Important: This is a catless performance component intended for competition/off-road applications where permitted. Removal or modification of emissions equipment may violate federal, state, or local law. Check applicable regulations before purchasing or installing.