VRSF B58 4.5" Decat Downpipe with Heat Shield – BMW M140i, M240i, 340i, 440i & 540i
DESCRIPTION
Heat shielding is widely used in motorsport to manage the intense heat produced by performance exhaust systems. This B58 4.5-inch decat downpipe applies that principle to help limit heat transfer to surrounding components. Reducing radiant heat in the engine bay can also help limit intake-system heat soak and keep intake air temperatures lower.
Key Features
- Heat-shielded decat configuration.
- Hand-crafted and TIG-welded 4.5-inch 304-grade stainless steel.
- CNC-machined 304-grade stainless-steel flange for a smooth transition.
- Smooth-radius bends designed to reduce turbulence.
- Fits the stock cat-back and compatible aftermarket cat-back systems.
- Fits right-hand-drive and left-hand-drive applications without modification.
- VRSF lifetime warranty for the race/decat version.
UK Vehicle Fitment
- BMW F20/F21 M140i – B58 Gen-1 downpipe/exhaust interface
- BMW F22/F23 M240i – B58 Gen-1 downpipe/exhaust interface
- BMW F30/F31 340i – B58 Gen-1 downpipe/exhaust interface
- BMW F32/F33/F36 440i – B58 Gen-1 downpipe/exhaust interface
- BMW G30 540i – Gen-1 downpipe/exhaust interface
Fitment check: Confirm the physical turbo-to-downpipe and downpipe-to-exhaust connections before ordering; model year alone is not sufficient.
DISCLAIMER
Where applicable, the use of de-cats, sports cats and removing OPF/GPF systems is for off-road/motorsport use only. Using these parts may prevent your vehicle from passing an MOT test. Only EC type-approved components are legal and fit for road use.
SHIPPING & WARRANTY
Free UK shipping on all orders. In-stock orders are dispatched Monday–Friday. Please refer to the live dispatch estimate above for the current estimated dispatch day. Tracking is provided once your order is dispatched.
Warranty coverage varies by product and manufacturer. Please contact us if you need confirmation of warranty coverage before ordering. Your statutory rights are unaffected.