RPM for a stock engine?

The TFC has the Ti valves and its stock rev limit is 7400. The other models don’t have those valves and the limit is 7000. One might conclude that Triumph would not recommend raising that. You’re asking if anyone has damaged their engine by raising the rev limit to 7400. I believe Richard Albans raised the rev limit on his TTS bike. Bren Tuning says it raises the rev limit (for $895) to 7500+ depending on the engine.