2014 Triumph Thunderbird Engine problems

Tl* the contact owns a 2014 triumph thunderbird. While driving between 35-55 mph, the contact's motorcycle made an abnormal knocking noise. The noise was loud and a distraction. The vehicle was towed to southern california motorcycles (515 w lambert rd, brea, ca 92821, (714) 256-6700) to be diagnosed, but the test came back incomplete. The dealer stated that the motor was not as noisy as other motorcycles. The manufacturer was made aware of the failure and stated that "the motor was not noisy enough". The vehicle was not repaired. The failure mileage was 9,100. The vin was invalid.