BMW X5/X6 G05 B58 Valvetronic Designs Valved Exhaust System
Engineered for Sound. Built for Performance.
Precision Engineering for the B58 Platform
The BMW G05 X5 and G06 X6 deserve an exhaust that matches their presence and performance. Drawing from years of B58 development, the Valvetronic Designs Valved Exhaust System is engineered to optimize flow dynamics, deliver measurable power gains, and produce a rich, engaging exhaust note worthy of the Ultimate Driving Machine®. Every curve, weld, and diameter is purpose-built for the perfect balance of sound, performance, and drivability.
Dynamic Sound Control
At the heart of the system are our electronically controlled valves, allowing you to instantly tailor your driving soundtrack.
Valves Closed: Civilized and refined, ideal for early mornings and relaxed highway cruising.
Valves Open: Aggressive, raw, and commanding—turning every acceleration into a statement.
Whether open or closed, the system is tuned to provide clarity, depth, and zero unwanted drone, giving you total control over your sound profile.
Uncompromising Build Quality
Constructed from premium T304 stainless steel for maximum durability and corrosion resistance.
Precision TIG welded for strength and flawless finish.
Designed for perfect OEM fitment using factory mounting points for a seamless, hassle-free installation.
Key Features
Custom-tuned for the B58 engine – Unlock enhanced sound and improved performance.
Electronic valve control – Operated via standalone controller.
T304 stainless steel construction – Built to last and perform under all driving conditions.
Fully mandrel-bent tubing – For maximum exhaust flow and throttle response.
100% reversible – Always able to return to stock configuration.
Fitment
BMW G05 X5 40i (2020+)
BMW G06 X6 40i (2020+) Does not fit hybrid models (45e, 50e).
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This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm.
For more information, visit
www.P65Warnings.ca.gov.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads.
Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Civil penalties up to $4,819 per violation per vehicle
Possible criminal penalties under the Clean Air Act
Revocation of registration or smog certification by DMV or local authorities
State & Local Regulations:
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
Intended Use & Customer Certification:
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Company Policy Statement
Kies Motorsports, LLC sells and markets these products for lawful use only.
We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.
