j/k
ohh snap @ 75mph
Seasoned HDF Member
Joined: May 2008
Posts: 21,208
Likes: 12,795
From: South Carolina
Show us the markings on the head of the bolt please.
OEM riser bolts are Grade 5.
I don`t think the failure is from overtorque, a grade 5 bolt would probably pull the threads out of the riser before the bolt was damaged.
The bolt failed at the threaded part, but the threaded part should have been fully into the riser.
My guess is that it is not the correct bolt, or not enough torque.
OEM riser bolts are Grade 5.
I don`t think the failure is from overtorque, a grade 5 bolt would probably pull the threads out of the riser before the bolt was damaged.
The bolt failed at the threaded part, but the threaded part should have been fully into the riser.
My guess is that it is not the correct bolt, or not enough torque.
Last edited by Dan89FLSTC; May 6, 2011 at 03:01 PM.
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
With the small dia on the bottom of the riser and If U have Apes.. then Ur putting a lot of stress on the riser bolt every time U get on and off the bike from the height of the bars.
The taller the bars the more stress thats applied..
I am also thinking its more from that than over TQ the bolt itself.
The taller the bars the more stress thats applied..
I am also thinking its more from that than over TQ the bolt itself.
Here are some more pics. The bolts are grade5 and I am replacing them with some grade8 bolts. As for the bushings, they are poly and iam replacing them with new ones at the same time..
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Tourer
Joined: Dec 2010
Posts: 250
Likes: 0
From: Mesa arizona
Bolt
Replace it with a Lawson tough toq much better than a grade 8
Elite HDF Member
Joined: Dec 2009
Posts: 4,598
Likes: 14
From: navarre ohio
that really sux..i had a riser bolt fall out on a stretched springer chopper once..i was pulling into a bike shop,the bars went sideways..i still dont know how i saved it..it still freaks me out when the bars move from the bushings flexing