Europe’s New Anti-Tampering Measures on Motorcycle Exhausts

New anti-tampering measures in Europe aim to reduce noise pollution by restricting modifications to motorcycle exhaust systems, including removing DB Killers.

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The European motorcycle market is set to change with new anti-tampering provisions aimed at reducing noise. Part of the third series of amendments to UN Regulation No. 92, these provisions target the removal of “DB Killers” in exhaust systems, limiting noise manipulation.

DB Killers, or sound-dampening devices, are typically removed by some motorcyclists and aftermarket exhaust manufacturers in a bid to enhance engine performance and create louder exhaust sounds. This modification is often seen as a way to boost the sound and appeal of a bike. However, it has raised growing concerns regarding noise pollution, particularly in urban environments.

ACEM’s Support for Noise Regulation Measures

The European Association of Motorcycle Manufacturers (ACEM), representing brands like BMW, Ducati, and Honda, supports the new anti-tampering regulations. ACEM acknowledges concerns over motorcycle noise pollution and backs the EU’s long-standing noise emission limits.

Antonio Perlot, ACEM’s Secretary-General, stated the measures ensure replacement exhausts meet regulatory standards and address noise concerns affecting citizens and urban life.

A Collaborative Effort to Tackle Noise Pollution

The new provisions result from collaboration between ACEM, aftermarket exhaust manufacturers, and IMMA. In 2023, they published guidelines to reduce illegal exhaust modifications that increase noise, influencing the new regulations and addressing environmental concerns.

UNECE GRBP’s Role in the Regulatory Process

The amendments were finalized at the UNECE GRBP session in September 2024 and validated by WP.29 in March 2025. They are now part of the EU Type-Approval Framework Regulation (EU) 168/2013,. This ensures compliance with UNECE Regulations No. 92 and No. 41 for motorcycle exhaust systems.

The UNECE regulations aim to create harmonised standards that ensure motorcycles, both in their original form and with aftermarket modifications, meet noise emission limits that protect public health and the environment. The new provisions are part of ongoing efforts to tackle environmental issues and promote sustainable motorcycling practices across Europe.

Concerns and Reactions from Motorcycle Enthusiasts

While manufacturers and environmentalists support the new anti-tampering provisions, some enthusiasts fear it will limit customization. Nonetheless, the regulations aim to reduce noise pollution and foster an environmentally conscious motorcycling community, addressing urban citizens’ concerns.

A Step Toward Responsible Motorcycling

The new regulations represent a shift toward more responsible, sustainable motorcycling. By enforcing noise emission standards, the EU tackles environmental and health concerns while improving relations between motorcyclists and the public.

As the industry adapts, balancing performance, customization, and environmental responsibility will be key. The focus will be on reducing noise in urban areas while allowing room for innovation within regulatory limits.