ARM 6" BMW Supra B58 Catless Downpipe - 240i 340i 440i 540i 640i 740i Supra f30 3 series Available in FRP or Carbon

Available in FRP or Carbon Fiber options

Removable when properly installed

This restricts noise during low-speed driving and produces a more subdued yet deeper sound

Performance Gain: 8-10hp

The ARM B9 FMIC has a frontal surface area of 382

ARM 6" BMW Supra B58 Catless Downpipe - 240i 340i 440i 540i 640i 740i Supra f30 3 series Available in FRP or CarbonHIGHLIGHTS 6" High Flow Section Improved Exhaust Sound Faster Turbo Spool Safely Flash Stage 2+ Tunes SS304 Stainless Steel PROFILE The ARM 6" B58 Downpipe takes the title of being the largest catless downpipe available for the B58 platform! The sound coming from your B58 with the 6" section of the ARM B58 Downpipe will astonish you. Even deeper tones, even better sound, and improved turbo spool. The ARM 6" B58 Downpipe is one of the foundational