Honda CBR 1000RR Exhaust Sound Level Database

Updated April 2006

Members of the 1000RR.net message board came together to compile a database of exhaust sound levels various exhaust systems produce.  A Radio Shack Model 33-2055 Digital Sound Level Meter is used to measure the exhaust system with a setting of "C" weighting and "FAST" response on the meter.  Atmospheric conditions such as temperature and humidity are recorded, as well as the year of the 1000RR being tested.  The brand, style, end can material, and whether the test is for a full system or slip on is also recorded.  Measurements are taken directly behind the exhaust at 6 feet (1.83 meters) and 16 feet (4.88 meters) and at the same height in reference to the ground as the exhaust can at 1,500 RPMs (idle), 6,500 RPMs, and 10,000 RPMs.  Testers are also asked to run a dB test on their horn to make sure the measurements jive.  The results of the various tests are recorded here and will be updated as new sound level tests are received so check back often. 

The dB (decibel) unit of measurement used for these sound tests.  This unit measures the intensity of sound waves.  The dB scale of measurement is progressive, similar to the Richter Scale, so keep that in mind when comparing results.  A reading of 110 dB is 10 TIMES louder than a reading of 100 dB.  If you'd like to learn more about he dB scale, a Google search will tell you more than you'll want to know.

The content of the table below is alphabetized by manufacturer. 

Exhaust Brand Number and Type of Muffler(s) (Race/Street) Can Material
(Carbon, Ti, AL, SS)		 Full System or Slip On RPM dB @   6 Feet dB @   16 Feet 1000RR Year
Model		 Temperature (F) and Humidity Horn dB @ 6 feet
Akrapovich 1 (Street) Carbon Full 1500 93 85 2004 82 / Low 105
        6500 102 92      
        10000 109 100      
Arata (Box) 1 (Race) Titanium Slip On 1500 93 88 2005 77 / Low 99
        6500 99 93      
        10000 108 100      
Arata (Oval) 1 (Race) Titanium Full 1500 92 86 2004 69 / Low 103
        6500 100 89      
        10000 109 100      
Arrow 1 (Race) Titanium Full 1500 91 87 2005 83 / Mid 105
        6500 106 101      
        10000 109 102      
Jardine RT-1 1 (Race) Titanium Slip On 1500 91 88 2005 90 / High 90
        6500 100 96      
        10000 109 103      
M4 1 (Race) Titanium Slip On 1500 92 86 2004 77 / High 105
        6500 97 94      
        10000 108 102      
Micron 1 (Street) Stainless
Twin Outlet		 Slip On 1500 93 86 2005 75 / Med 92
        6500 96 94      
        10000 100 97      
Sato 1 (Race) Titanium Slip On 1500 101 98 2004 40 / Low N/A
        6500 109 102      
        10000 113 110      
Sato 1 (Race) Titanium Full 1500 91 87 2004 78 / Low 69
        6500 103 95      
        10000 109 104      
Yoshimura 1 (Race) Carbon Full 1500 99 93 2004 95 / High 95
        6500 103 94      
        10000 110 101      


-Speedy

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