Remus Valved Axle-Back Exhaust for BMW X4M F98 (2019+) S58 - Rear Muffler/Back Box with OE Flap Control, Quad 84mm Chrome Tips, Stainless Bolt-On Performance Rear Silencer

Give your BMW X4M F98 the soundtrack and presence it deserves with this Remus valved rear section. Engineered for the 3.0 S58B30A twin‑turbo straight six (353 kW) from 2019 onwards, it retains the factory flap actuators for switchable volume and delivers a deep, motorsport‑inspired tone with four 84 mm slash‑cut rolled‑lip chrome outlets that fill the diffuser perfectly.

This rear silencer and quad‑tip upgrade is a direct, bolt‑on solution that elevates performance and style in one hit. Precision Austrian craftsmanship, full stainless construction and a flow‑optimised internal design unlock sharper throttle response and stronger mid‑range pull, while keeping day‑to‑day refinement when the valves are closed.

• Designed for BMW X4M F98 2019+ with S58B30A 3.0 twin‑turbo engine
• Retains factory flap control via OE electronics for switchable sound
• Quad 84 mm chrome tips – slash‑cut with a rolled edge for a premium OEM+ look
• Free‑flowing rear section for reduced restriction and improved breathing
• Weight‑saving design compared with the stock rear box
• Durable, corrosion‑resistant stainless steel with a clean blasted exterior finish
• Accurate OE‑style fitment – no cutting of the car’s electronics required
• Crafted in Austria by Remus for exceptional quality and longevity

We’ve installed this setup on customer X4M builds and the feedback is consistently positive: superb build quality, perfect alignment of the quad tips and a rich, authentic performance tone that really wakes up the S58 when the flaps are open.

Part number: 086219 6000 + 086219 1500 + 0046 55S

Fitment and compatibility keywords: BMW X4M exhaust upgrade, F98 rear muffler, performance rear section, valved back box, OE flap control exhaust, quad tip system, 84mm chrome tailpipes, S58 sports exhaust, BMW X4M 2019 on, stainless performance exhaust, switchable exhaust, rear silencer, premium UK performance parts, bolt‑on exhaust for BMW X4M.

Professional fitting: Want it installed properly first time? Book our in‑house fitting service at MJ Modifications, Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.