Rocket 3 R storm Swing Arm Casting Marks

Buelliganman

.020 Over
Joined
Sep 30, 2025
Messages
19
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Rocket 3 R storm
After fitting IXIl exhaust on my 2025 Storm R I noticed a casting mark underneath the paint finish on Swing Arm - Contacted Triumph via my local dealer and was told that this mark is a Casting Mark and not a defect and is normal and present on all Rocket 3 models - it is usually hidden behind standard exhaust - has anyone else got this mark on Swing Arm ??
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Hi Rok - Thanks for your reply - the first photo is my bike - the second photo a mate found on Facebook on his phone - I thought it was a defect but Triumph insist it is normal and on all Rocket 3 swing arms - just felt like I was being fobbed off 😀 nice to know other owners have noticed this - Thanks again Rik 😀😀
 
Weird. I looked and my 2020 GT doesn’t have the casting mark. Curious why some have it and other Rockets don’t. Could it be later models have them and early models don’t? Probably not a big deal but just curious why. I added these pics although not great photos it does show there is no casting marks in the area:thumbsup:
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Last edited:
imcool said:
you should get new one under warranty
Click to expand...
I have tried - Triumph claim that this casting mark is present on all Rocket 3 and is part of the manufacturing process and is not a defect - Triumph also say that the casting marks are hidden by the standard exhaust and because of this is acceptable - Triumph would not recognise it as a defect and would accept the warranty claim - I am disappointed that Triumph think that this is acceptable on such a premium expensive bike - Thanks Mark
 
Buelliganman said:
I have tried - Triumph claim that this casting mark is present on all Rocket 3 and is part of the manufacturing process and is not a defect - Triumph also say that the casting marks are hidden by the standard exhaust and because of this is acceptable - Triumph would not recognise it as a defect and would accept the warranty claim - I am disappointed that Triumph think that this is acceptable on such a premium expensive bike - Thanks Mark
Click to expand...
 

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