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Bikes: 748S, HM1100S, V4SP, Was: DD-A #111
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Join Date: Feb 2002
Location: Back in Essex
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The rubber nuts are no use really, so best toi junk them anyway.
If you didn't get any bolts with it, just use any old nut and bolt that will go all the way through the undertray, bracket and subframe.
The supplied nuts are nylock to stop them shaking loose, but you could use threadlock or double-nut them instead.