Brussels (Belgium) | 18 March 2025
The European Association of Motorcycle Manufacturers (ACEM) welcomes positively the adoption of the 03 series of amendments to UN Regulation No. 92, introducing new anti-tampering provisions for the non-original replacement exhaust silencing systems for motorcycles.
ACEM acknowledges the concerns of citizens, policymakers and regulators regarding the impact of noise on daily life. Motorcycle sound emissions have been regulated in the EU for decades, with maximum permitted levels defined through European type-approval requirements since the 1990s.
In 2023, ACEM, in collaboration with the aftermarket exhaust industry players and the International Motorcycle Manufacturers’ Association (IMMA), published a set of guidelines supported by several European stakeholders to address these concerns. These guidelines have further contributed to the discussions leading to the newly adopted anti-tampering provisions by the UN Contracting Parties.
Antonio Perlot, ACEM Secretary General, said:
“The adoption of the new anti-tampering provisions marks an important step in ensuring that motorcycle non-original replacement exhaust systems meet the current regulatory standards. This positive step ahead will reinforce measures against excessive noise addressing concerns raised by citizens and policymakers. ACEM remains committed to supporting harmonised implementation, working alongside authorities and industry stakeholders to ensure compliance and preserve responsible motorcycling.”
Note for editors
For sound level and anti-tampering rules of motorcycle exhaust silencers, the EU type approval framework Regulation (EU) 168/2013 mandates the application of UNECE Regulations no. 92 (aftermarket silencers) and no. 41 (original motorcycle). These Regulations were developed and are maintained by the Working Party Noise and Tyres (GRBP), under the World Forum for the harmonization of vehicle regulations (WP.29), operating within the United Nations Economic Commission for Europe (UNECE).
In September 2024, UNECE GRBP adopted the new requirements during its 80th session and followed by the final adoption at the March 2025 sessions of WP.29 as 03 series of amendments to UN Regulation No. 92.
About ACEM
The European Association of Motorcycle Manufacturers (ACEM) represents manufacturers of mopeds, motorcycles, three-wheelers and quadricycles (L-category vehicles) in Europe.
ACEM members include 17 manufacturing companies: BMW Motorrad, Bombardier Recreational Products (BRP), Ducati Motor holding, Harley-Davidson, Honda, Kawasaki, KTM, KYMCO, MV Agusta, Peugeot Motorcycles, Piaggio, Polaris Industries, Royal Enfield, Suzuki, Triumph Motorcycles, Yamaha and Zero Motorcycles.
ACEM also represents 19 motorcycle industry associations in 17 different European countries. About 300,000 jobs depend on the L-category industry in Europe. There are more than 39 million motorcycles and scooters on Europe’s roads (2024 estimate).
Contact:
ACEM Communications
Document
Adopted 03 series of amendments UN Regulation No. 92 – ECE/TRANS/WP.29/2025/3
