This is a high-grade lightweight titanium system, with an option of round or hexagonal carbon-fibre and titanium tailpipes (the choice of one is mandatory). Complex parts, such as the X-connection and specially designed collectors, are cast at the in-house titanium foundry. The exhaust system has no exhaust valves, and the main exhaust tubes have an increased diameter. Alongside acoustic reflectors on the tailpipes, a special resonator, and the X-connection, which allows gases from both sides of the engine to mix, these elements create a refined Akrapovic sound experience in all drive modes, delivering a deep and sporty tone. An additional damping element is added to the link pipe, which enhances the sound quality and comfort of The Akrapovic exhaust, while offering a unique sound experience. Power gains of 8.5 kW (11.5 hp) at 6,150 rpm and torque increases of 15.6 Nm at 2,550 rpm have been recorded when tested on The Akrapovic dyno against a BMW M5 with a standard stock exhaust. This exhaust system is 41.1% (15.44 kg) lighter than the standard stock version.It has been developed for cars without gasoline particulate filters. The installation is a simple plug-and-play operation, with no remapping needed.Notice: Performance tests were made with OPF vehicle.
This Part Fits:
Year
Make
Model
Submodel
2025-2026
BMW
M5
Base
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TERMS (REQUIRED)
OFF-ROAD USE POLICY & EMISSIONS COMPLIANCE NOTICE
California Proposition 65 Warning:
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.