Motocross Sound Limit Drops to 109 Decibels

American Honda backs a three-decibel reduction for AMA and SuperMotocross championships beginning with the 2027 racing season.

Updated on Nov. 3, 2026 in Motorcycles

Expressive editorial sports illustration of a motocross rider mid-jump over red clay dirt, rendered in bold team-color blocks with dust trailing behind. — American Honda backed a move to lower the AMA and SuperMotocross sound limit from 112 to 109 decibels, effective with the 2027 racing season. AI Illustration. Upload story photo >

American Honda supports lowering the sound limit for AMA Supercross, AMA Pro Motocross, and SuperMotocross Championships from 112 to 109 decibels. The new standard takes effect during the 2027 racing season.

Why it matters

The change is intended to address noise concerns from surrounding communities and help preserve access to motocross tracks and off-road riding areas. It also aligns U.S. professional racing with the sound limit used in the FIM MXGP series.

The sound limit falls from 112 decibels to 109 decibels, a reduction of three decibels. American Honda plans to sell 2027 model-year motorcycles that meet the new requirement.

The players

American Honda

American Honda is the U.S. subsidiary of Japanese automaker Honda, a major motorcycle manufacturer competing in U.S. professional motocross.

American Motorcyclist Association

The American Motorcyclist Association is the largest motorcycle advocacy organization in the United States and oversees AMA Pro Racing sanctioned events.

The details

The AMA updated the sound standard, which initially applies to professional competition. American Honda states the change will also support technical assistance for privateer riders and support teams during the early rounds of the 2027 AMA Supercross season.

2027 model year: Honda plans to sell 109-decibel-compliant motorcycles.
2027 racing season: The 109-decibel sound limit takes effect.
2027 AMA Supercross season, early rounds: Honda plans technical assistance for privateer riders.

Roadmap

The revision lines U.S. professional motocross up with the FIM MXGP series, letting manufacturers develop one compliant motorcycle for multiple championships. It reflects a broader effort across off-road racing to balance competition with community noise concerns and continued access to riding areas.

Riders buying 2027 model-year motorcycles from American Honda will receive machines meeting the 109-decibel requirement. Privateer riders may receive technical help during the early 2027 Supercross rounds.

The takeaway

Quieter professional motocross may help protect the trails and tracks riders depend on, a benefit that extends beyond the racing series itself. Riders planning future purchases should look for 109-decibel-compliant models starting with the 2027 model year.