BMW M240i B58 Downpipe with 200 Cell Hi-Flow Sports Cat and Heat Shield
Upgrade your BMW B58 with our stainless steel catted downpipe for serious performance gains and a deeper, more aggressive exhaust note. This BMW M240i B58 Downpipe with 200 cell hi-flow sports cat and integrated heat shield is precision made from T304 high-grade stainless steel and TIG welded in-house for strength, durability and a premium finish. Designed to sit directly off the turbo, this B58 catted downpipe reduces backpressure, helps the turbo spool faster and sharpens throttle response for a noticeable increase in power and drivability.
We have tested this product and found increases of around 20 to 25 bhp without tuning and 120 bhp+ on a tuned car. Customers love the improved turbo response and the rich, motorsport-inspired exhaust tone while retaining road legality with a Euro 5 rated 200 cell sports catalytic converter.
Key features and benefits
- BMW B58 catted downpipe with 200 cell hi-flow sports catalytic converter for performance and MOT-friendly emissions
- T304 stainless steel construction with in-house TIG welding for strength and long life
- Integrated heat shield to help manage under-bonnet temperatures and protect surrounding components
- Lower exhaust backpressure for faster turbo spool and sharper throttle response
- Noticeable power gains and a deeper, more aggressive exhaust note
- Brushed stainless finish for a premium OEM-plus look
- Road legal Euro 5 rated sports cat that should pass an MOT emissions test when fitted
Compatibility – BMW B58 pre-OPF
Fits the following BMW models equipped with the B58 engine and pre-OPF:
- BMW M140i
- BMW M240i
- BMW 340i
- BMW 440i
- BMW 540i
- BMW 740i
Why choose this BMW B58 200 cell sports cat downpipe
- Optimised for the B58 platform to unleash performance without the harshness of a decat
- Hi-flow 200 cell catted design balances power, sound and emissions
- Proven gains both stock and tuned, with excellent reliability
- Perfect upgrade for M140i, M240i, 340i, 440i, 540i and 740i owners seeking a quality stainless steel catted downpipe with heat shield
Fitting and support
Professional installation is recommended as factory exhaust tolerances can vary and access can be tight. For fitting, we can take care of everything at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Note: Pre-OPF vehicles only. Euro 5 rated. Should pass an MOT emissions test when fitted.