Exhaust Muffler Carbon Tip for BMW M240i M340i M440i M550i (2019-2025)

High-Flow Quad Exhaust Carbon Tips for 2019-2025 BMW 2 Series, 3 Series, 4 Series, 5 Series - Won't Fit Factory Diffuser, must install aftermarket diffuser as shown

Upgrades the factory exhaust aesthetic to an aggressive quad-tip setup utilizing T304 stainless steel and real wet carbon fiber for aftermarket diffusers.

The Stock BMW OEM Finisher Limitation

The stock M-lite exhaust system on the B58 and N63 platforms utilizes restrictive, integrally molded trapezoidal or dual-circular exhaust finishers that limit bumper design potential and dampen the aggressive styling expected from a high-output chassis. These factory components are often integrated directly into the factory valence, trapping excess heat and limiting the physical space required for multi-pipe, high-flow exhaust setups. Additionally, the OEM metal finishers are prone to carbon buildup and rapid discoloration from the high exhaust gas temperatures (EGTs) common in turbocharged 3.0L and 4.4L engines, leading to a degraded, weathered rear aesthetic over prolonged heat cycles.

The Engineering Solution

This dual-tip quad conversion directly addresses styling and thermal limitations by providing a staggered, 4-inch individual tip outer diameter structure designed specifically to interface with aftermarket quad diffusers. Constructed from premium, non-magnetic T304 stainless steel with precision TIG welding, these tips resist thermal cycling fatigue and corrosion in harsh road environments. The 2.5-inch inner diameter inlet slips cleanly over the factory or aftermarket tailpipe. To combat thermal transfer and protect your aftermarket bumper upgrades, the tips feature a double-walled construction surrounded by 100% real wet carbon fiber. This creates a critical insulating thermal barrier against the diffuser while delivering a motorsport-grade finish. Note: This hardware requires an aftermarket quad-exit diffuser and will absolutely not fit the factory OEM rear bumper valence.

Technical Specifications

Compatibility

• 2019-2025 BMW M240i (Requires Aftermarket Quad Diffuser)
• 2019-2025 BMW M340i (Requires Aftermarket Quad Diffuser)
• 2019-2025 BMW M440i (Requires Aftermarket Quad Diffuser)
• 2019-2025 BMW M550i (Requires Aftermarket Quad Diffuser)

The BMW Precision Standard

Designed for strict European tuning standards, these double-walled carbon quad tips provide the visual aggression needed to match the blistering power delivery of the B58 and N63 powerplants. They deliver refined motorsport aesthetics without triggering CELs or disrupting factory emissions hardware.