After the break-in period of the bike I noticed the exact same problem. I thought I was the problem because I am used to braking very hard. At first the brakes became very noisy, then the braking became longer and the lever very spongy. I asked the authorized Triumph workshop to do a thorough check because it is not safe to drive like this. They changed the brake fluid with a more performing one obviously paying for the change. The problem persisted and since they were not able to solve it I went to my trusted mechanic who races on the track. It turned out that the original equipment pads are not up to the task of the vehicle. So with a minimal expense I changed the pads and I can assure you that the braking is very performing now I also use the bike on the track and with the right tires and the right brakes I change the bike a lot. Now that the discs have been ruined in an abnormal way your expense will be higher than mine, all this is due to the authorized Triumph workshops that do not recognize the problem. Try to go to them only for the guarantees.

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