TARMAGO

Rider tool · Noise limits

Will my bike pass the noise test?

Enter your noise level and measurement method. Compare it with known motorcycle circuit limits, country by country.

Your measurement

From 70 to 130 dB. Decimals with a point or comma are accepted.

The same label does not ensure the same protocol: check distance and rpm. Never compare a 50 cm reading with a “2 m max” limit, or a static reading with a drive-by limit.

Circuit comparison

Enter your noise level to display comparisons. No results are estimated.

Where can you find your bike’s noise level?

Original exhaust

On the French registration certificate, U.1 gives stationary noise in dB(A). U.2 gives the associated engine speed in rpm. Read both fields together; a missing field cannot be filled in by guessing.

Use this reference only for the original configuration in good condition. It is neither a recent measurement of your bike nor a guarantee of circuit admission.

Service Public — Cerfa 13749*05, U.1 / U.2 fieldsEUR-Lex — Directive 1999/37/EC, registration codes

Aftermarket silencer or full system

To know the level of your current setup, have it measured with a sound meter using the required protocol, or use the organizer’s technical-check measurement. An exhaust brand or bike model is not enough: rpm, installation, insert and packing condition matter.

An approval marking does not provide a noise level valid for every test. Check the manufacturer’s manual and certificate for your bike and the approved configuration; modifying the product may invalidate its approval.

LeoVince — 14281E–14282E, approval, rev. 03 (3 June 2021)

At what rpm will your bike be tested?

Reference from the FFM Speed table dated 1 March 2025, p. 5: “FIM” method, stationary bike, microphone at 50 cm and 45°. Its stated scope is speed disciplines outside large circuits. This calculation does not replace your event’s protocol.

“Static” alone does not identify a protocol. The “2 m max” test uses 2 m and maximum rpm; it is not comparable to a fixed-rpm test at 50 cm. FFM also describes a dynamic test on large circuits. Ask the organizer for distance, rpm and method before comparing.

FFM — noise RTS, 1 March 2025 (pp. 1–8)

Manual entry: the catalogue has no cylinder count or piston stroke. The table lists 125 cm³ 2T, 400, 600 4T, 750 and over 750, without defining intervals between rows. No automatic rounding (599, 636, 675… → ask the organizer which class applies). Confirm rpm for other 2-strokes.

Enter displacement and check the engine type and cylinder count.

Compare U.1 and U.2 (optional)

With a modified exhaust, or without confirmation of its original condition, U.1 cannot predict this test: have the bike measured.

U.1 is not transferred to the circuit comparator. Use a measurement of your bike and check that the protocol matches; the organizer’s rules and measurement take precedence.

If you exceed the limit: what to check

Check YOUR exhaust’s manual or consult a professional, then have the bike measured again. No universal dB reduction is claimed. These manuals cover specific products, not every bike.

  • Manufacturer-specified dB-killer / insert

    For a track system designed for a removable insert, use the compatible insert and specified fasteners. Example: Yoshimura R-77 INS-03-K / INS-04-K kit. Work on a cold exhaust. Do not drill or remove a road-approved insert.

    Yoshimura — R-77 INS-03-K / INS-04-K insert kit

  • Repack the silencer

    Have the packing checked and use the kit specified for your silencer. Yoshimura links increased noise to worn packing and recommends repacking at least yearly in its R-77 1121120520 manual, more often depending on use: this is not a universal interval. The RS9T manual describes fiberglass packing and recommends suitable protection.

    Yoshimura — R-77 1121120520, maintenanceYoshimura — RS9T-P13 repack kit

  • Original or bike-specific approved silencer

    Consider returning to the original configuration, or a complete compatible approved system, without any promise of passing on track. The LeoVince 14281E–14282E manual ties its certificate to the intended vehicle and warns that modifications invalidate approval. Road approval is not trackday admission.

    LeoVince — 14281E–14282E, approval, rev. 03 (3 June 2021)

  • Joints, seals and fasteners

    Have joint sealing, gaskets and fasteners checked according to the manual. LeoVince requires a leak check after fitting and inspection of wear parts. Replace faulty parts with the specified items, not improvised fixes intended to fool the test.

    LeoVince — 14281E–14282E, fitting and maintenance, rev. 03 (3 June 2021)

After any work, have the bike retested under the actual test conditions. The organizer decides under its rules and measurement. On the road, retain a compliant, approved setup; an insert does not make a competition-only part road legal.

Documents consulted

PDF file pages (the LeoVince booklet has several printed pages on each sheet). Short quotations remain in their original language.

Static and drive-by: two different measurements

A static reading is taken with the bike stationary. The FFM FIM method uses 50 cm and 45° at a fixed rpm (p. 5), but “2 m max” uses 2 m at maximum rpm (p. 2). This comparator’s static field does not distinguish these protocols.

For a drive-by test, the bike is measured while riding. The FFM protocol uses a trackside measurement and corrections specific to that setup. It is not a converted static measurement.

Reference: FFM, FIM and dynamic methods

A number alone is not enough: 105 dB static and 109 dB drive-by cannot be compared. This tool does not convert methods, add tolerances or estimate missing limits. Even within the same measurement category, check the exact protocol with the organiser.

Frequently asked questions

Can I compare a static reading with a drive-by limit?

No. The tool only compares values using the same method. A static reading against a drive-by limit, or the reverse, is marked “not comparable”. No conversion is applied.

What if I don't know my measurement method?

Choose “I don't know”. Limits remain visible, but no circuit is marked “pass”. Ask which protocol was used for your reading and which will apply on the day.

Does a missing limit mean there are no noise restrictions?

No. It only means Tarmago does not have that information. The circuit never counts as a “pass”. Check the day's regulations or contact the organiser.

Does “pass” guarantee access to the track?

No. It means your number is less than or equal to the recorded limit for the same method, without any added margin or tolerance. Conditions can vary by day and protocol. The organiser's measurement on the day is decisive.

Read the motorcycle noise testing guide

Sources and scope of results

This document explains the methods; it does not set a universal trackday limit. Each circuit's values come from Tarmago circuit profiles: their source, note and verification date are shown in the results.

FFM — Machine noise level regulations, version of 1 March 2025, pp. 5 and 7–8 (PDF, French)