Hello everyone, I am from South Africa and used to be an apprentice at Triumph's head branch. I would just like to share an issue regarding the Tiger 900 gen1(2020-2023) and possibly gen2. This applies to GT or RALLY models. During my time there 3 gen1 Tiger 900s suffered significant damage due to the rear sprocket's bolt/nuts shearing-off/coming loose. The images attached are of the 3 separate bikes but are probably mixed below. It appears from all 3 that the nuts almost all evenly started to come loose, then once that happened the sprocket was loose putting extra pressure on the bolts causing them to completely shear off. Triumph never mentioned anything about this, but when releasing the Gen2 the sprocket bolts have changed from M8 to M10. This is why I believe this issue won't happen on the Gen2's as an M10 will have a higher torque specification leading to less of a chance of them coming loose. I encourage anyone with a Tiger 900 regardless of generation to either make sure that the nuts are properly tight or remove each bolt and nut put lock-tite and re-tighten properly. Especially if your sprocket has been replaced as most technicians don't know about this issue and could just tighten to the original torque specification (which comes loose!!!) or less than the original torque specification. If your bike is due for a sprocket change make sure to ask the technician to put lock-tite and make it extra tight as most places and people will use the original "locking" nut which the "locking" functionality only applies once, if taken off the lock nut will not function like it is intended, hope that makes sense. Don't use a torque specification just make it as tight as you can without obviously stripping it. You don't want this to come loose trust me!! The main reason why I am posting this is that it is an issue that can easily be prevented and when the sprocket comes loose the rear wheel will lock up which is extremely dangerous especially if you aren't expecting it. Another thing to mention is that this was the only issue I ever saw on a Tiger 900, and we worked on 1000's of them literally Apart from this small issue, I believe that the Tiger 900 is the best 900 adventure bike you can get and the best bike that Triumph sells in terms of reliability and ride. I hope that everyone finds this helpful and interesting. Please also share this with anyone you know who has a Tiger 900 as I feel everyone with one should be aware of this.
