Exhaust bolts size

[RustiePyles]

Can anyone verify that the lower exhaust stay bolts right behind the bottom motor mount bot are 10mm? According to the Yam part# 90105-10058-00 (bolt part number) they're 10mm, I could have sworn they were 8mm. The tabs with the captured nuts have been cut off my chopper frame so I'm making some new ones for my foot peg brackets.

 

[miketweedie]

10mm x M1.25 x 20mm with 17mm Hex Head.

 

[RustiePyles]

10mm x M1.25 x 20mm with 17mm Hex Head.

Thank you.

 

[miketweedie]

Thank you.

no problem. they were a little harder to find and horrifically expensive, but I sourced some allen head cap bolts in black anodized to replace mine, which cleaned up the look with my black foot controls. Still not sure they were worth $7 per bolt, though...

 

[5twins]

Yes, they are 10mm and have a fine thread, but I don't know the pitch offhand. The heads aren't 17mm though. This is one of those special fasteners Yamaha used on this bike. The head is 12mm and has a washer built into it .....

 

[miketweedie]

5Twins is correct, those are the stock ones. I couldn't get those anywhere, so i used these from XS650 Direct

 

[RustiePyles]

Thread pitch is irrelevant in this case because I'm making the brackets myself, I just wanted to use the right size bolt. I'll use 10X1 coarse thread pan head bolts. I'll just tack some 10mm nuts inside a piece of square tube with one side cut off and weld it to the frame where the old ones used to be.

 

[Jim]

Bolt Depot.

 

[Jim]

Thread pitch is irrelevant in this case because I'm making the brackets myself, I just wanted to use the right size bolt. I'll use 10X1 coarse thread pan head bolts. I'll just tack some 10mm nuts inside a piece of square tube with one side cut off and weld it to the frame where the old ones used to be.

If those will be for foot peg/rests, you might want to consider 10.9's instead of 8.8's. Bolt depot also has the stronger ones.

 

[RustiePyles]

Bolt Depot.


View attachment 201505

Do they have black oxide allen button head?

 

[Jim]

Do they have black oxide allen button head?

They're even stronger yet... 12.9's

 

[RustiePyles]

Do they have black oxide allen button head?

They do, I just found em.

 

[RustiePyles]

Gonna have to use button head, not much clearance between the pipe bracket.

 

[Jim]

I usually try to tally up... best I can, on all the hardware needs and order all at once. For a $50 order it's usually about 3-5 bucks shipping.... and they've never taken more than about 5 days to arrive. Good outfit.