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Join Date: Nov 2007
Location: Chandler, Arizona
I'm wondering if drilling into the solid stud where the shock goes, making it hollow, would weaken it. It is not made of the best quality metal, you can tell that from how easy the threads stripped. Remember there is a lot of weight and stress on that stud. I've had this problem on a couple of bikes. Rather than mess with the solid stud, I used a die to make new threads where the original threads were stripped. Yes they were smaller, but the only reason for the nut that goes on these threads is to prevent the shock from sliding off. You could probably ride without the nut and the shock would stay put. On one of these bikes I just used a smaller nut, on the other one (Yamaha XS650) I used a threaded bushing with threads on both the inside and outside. I screwed the bushing on to the new threads, using red locktite, then used a larger nut on the outside of the bushing. Either way there is no chance of weakening that stud that supports a good part of the weight of the bike and rider.
Another way of doing it (that for me would require a professional) would be to have more metal welded onto where the threads are stripped, machine it round, then retap the original sized threads on it.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike