Can you idenify these Exhaust Allenkey bolts please?

[Grendel]

I'm planning to take out the Db killer on my Arrow Dakar exhaust for the Transalp to help it breath a bit more with the K&N but last time i tried i ended up rounding off 2 of the bolts (wrong sized allen key D'Oh!) so i want to get spares before i attack it again. They take a size 3 Allenkey I did buy some on e-bay but when they arrived they where the wrong ones and tiny. Heres the pic's.

https://i12.photobucket.com/albums/a226/ispivey/2010_09030003.jpg

https://i12.photobucket.com/albums/a226/ispivey/2010_09030002.jpg

https://i12.photobucket.com/albums/a226/ispivey/2010_09030001.jpg
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Past bike: 2004 Hyosung Comet
Current bike: 1993 Honda Transalp
Transalp Page: https://www.facebook.com/home.php?ref=home#!/group.php?gid=11418462079

[Kickstart]

Hi

Looks like an M3 or M4 (difficult to tell with the light on the piccy) button headed bolt. M3 is tiny so I would suspect M4.

The size of allen key isn't that important, and thread size and the tool to undo them are not directly related with metric bolts (they were with Whitworth).

Should be easy to get a bolt like that. Suspect any small bike shop can supply you with a few for a nominal amount (if you were near Stafford I would say to come round and grab some as I am certain I have some stainless steel fairing bolts that size).

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[ZRX61]

WTF is a "size 3" allen wrench?? Did you mean 3mm?

[neil.]

I reckon M4x1 button head.
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CBT February 2008 | A2 June 2008 | Yamaha YBR125 (written off) | Honda CBF125 (current)

[stirlinggaz]

yup,
look like standard M4 button headed bolts, just like the type i used on my fairings/screen.like this
https://cgi.ebay.co.uk/M4-x-12-Stainless-Button-Head-Bolts-x-20-Free-P-P-/370213763790?pt=UK_BOI_Metalworking_Milling_Welding_Metalworking_Supplies_ET&hash=item563275bace

took a 4mm hex bit,iirc,
cheers,
GAZ

[Grendel]

Thanks for the help.

Been down the M3x6 route thinking they looked right until they arrived. And there tiny

Yep think your all right they look like M4x10 so will order some of those before I attack the exhaust again.

https://cgi.ebay.co.uk/M4-x-10-Stainless-Button-Head-Bolts-x-20-Free-P-P-/370224401707?pt=UK_BOI_Metalworking_Milling_Welding_Metalworking_Supplies_ET&hash=item5633180d2b
____________________
Past bike: 2004 Hyosung Comet
Current bike: 1993 Honda Transalp
Transalp Page: https://www.facebook.com/home.php?ref=home#!/group.php?gid=11418462079

[LongJohn22]

I'd lay odds on it being M5x12. If you've any hexagon head bolts that take an 8mm spanner, take it out and try it. if it fits, its M5.

[Grendel]

And the winner is: M5x12.

So now have a supply of spare M3 & M4 bolts

But the fecking Db killer is out

https://i12.photobucket.com/albums/a226/ispivey/2010_09110003.jpg

Sound great being a V-Twin and will definitely drown out the chavpeds at the lights
____________________
Past bike: 2004 Hyosung Comet
Current bike: 1993 Honda Transalp
Transalp Page: https://www.facebook.com/home.php?ref=home#!/group.php?gid=11418462079

[Digit]

Now buy a digital caliper or a micrometer.

Roy.
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Happy daze!

[Grendel]

[Digit]

Roy.
____________________
Happy daze!