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With these DB-Killer the sound is improved significantly - nice fuller deep sound, a bit louder.
The max. noise level range of 94dB (at rated speed 3563 rpm) is still within the permissible tolerance (without guarantee), stationary noise approx. 78dB (without guarantee).
The RP12 dB killer - original Akrapovic silencers have only 91dB (steady 72dB), although 94dB are approved!
Better performance is possible after proper coordination wit a Power Commander!
The change takes about 2-3 minutes (3 screws each).
Delivered is 1 pair NEW and UNUSED
! Not suitable for the Yamaha MT-01 series silencer !