Quote:
Originally Posted by rjd598
The rpi gtm which is full catless I heard drones too. Op is talking about gtc which is a quieter muffler with the same xpipe as the gtm. I think rpi claims less drone or none at all with the gtc. The whole point was to tone the gtm down with the gtc muffler
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the GTC has much less drone compared to the GTM. in general the GTC is about 30% quieter than the GTM.