Has anybody had an issue with their rear stock shock, bottom bolt breaking. My friend with C-Dale#4 just found it today after many hours of riding and serious jumping. It broke right at the nut, the nut was gone. We found the bolt sticking more than half way out. Lucky us, because we were jumping the hell out of this thing. It's great that we found it, but I was just curious if it has happend to anyone else?

 

...Iv never heard it being a problem,but i think for 03 they went to a 12mm bolt?? when the ones be 4 are 10mm bolts??.Im not 100% sure about this....Thanks

 

Yeah, that happened on our 02 Moto. We went to a hardened bolt, and it's survived so far.

 

Happened to my racing buds quad too.I thought it was from over torqueing but now that I hear about bigger bolt???

 

I think it could be flaws in the bolts. I had a front upper shock bolt break. I think it's the same diameter, not sure about length. Anyway, I was just tightening it, with a torque wrench, and it broke before reaching the setting- 36 ft-lbs, I think it was. If you look at the broken end of the bolt, it appears there was a flaw in the bolt because there was a slight amount of rust on about 10-20% of it. That would have been inside the bolt before it broke leading to the failure. Coincedentally, it broke in the same place your describing. The problem your describing tells me it was tighter than it should've been. Sure it may have been torqued to spec, but maybe the spec was too high. The only real reason you would need to switch to a larger bolt(in this application) is if they were failing in shear- and these haven't. These were tensile failures, which is not the primary force these bolts are subjected to.

Not that all that jibberish really matters- get a hardened bolt and ride!!! If you haven't replaced yours, it wouldn't hurt to keep an eye on it, though!

 

Thanks guys!