Final drive unit

[Claviger]

Looking for a suitable bolt now, actually this is a great spot for an aluminum bolt! No load, and in M10 threads, you'll certainly break the bolt before you strip the housing.

 

[Joesmoe]

If we go with aluminum, will have to provide a set of three -- one to screw up and learn, a second to take the learning curve, and a third to make to the end of current ownership.

 

[Claviger]

Would need to verify fitment before saying these will work for sure, the aluminum one is 25mm the Ti one is 20mm. Would definitely suggest blue loctite on either, as both a locking safety measure and corrosion inhibitor.

Aluminum: Aluminium Race Spec M10 x (1.25mm) x 25mm Etched
Titanium: Titanium Hex Head M10 x (1.50mm) x 20mm

The Alu they use is 7075, its quite strong.

 

[Idaho Red Rocket 3]

When my drain plug bolt broke I replaced it with a regular Allen head bolt. No magnet. I change my final drive oil every spring so I'm not worried about not having the magnet.

 

[Bedifferent]

i have worked on this and i have a few replacements.
the thread is size M10x1.5 metric. the bolt i have is 7/8 inch long
u have to use something like an Allen head because the bolt head will not fit wright.
now u might use an 1 inch bolt u would have to measure so it does not touch the ring gear.
the bolts i have have Allen head and come out of chev torque converters they make several diff kinds and i only get these out of trucks i replace them with new factory bolts with hex heads.
now the problem with these is that if some one over torques these it will strip the final drive threads. gone until monday

After reading this thread, I happened to be in Menards today and picked up a couple of 10mm x 20mm flange bolts. I know one was a 1.5 pitch and I think the other was a 1.25 pitch. I was just guessing at the size, but I was pretty sure the bolt Triumph uses was one of those Two sizes.

As I recall, it was a flange bolt as well. Anyway, you might check out Menards. I am going to look on Amazon to see if I can get some aluminum crush washers to match for a good seal. I change my fluid once or twice a season so I see no need for the magnet. I always correctly torque my bolts or nuts. Don''t even go their guys. Lol

I use BelRay full syntetic 80-90 I believe...Always a pretty candy apple red when I put it in, but a nasty smelling black when I drain it out. Someday I hope it comes out red.

 

[Claviger]

I suppose I’ll add this to the list of maintenance things I’ll do this year . When the tires done and I do the splines I’ll do the fluid as well.

A steel replacement bolt will be much cheaper than Alu or Ti, but, if I take a bolt off a new Alu or Ti goes back on, just a me thing

 

[scot in exile]

Only reason some are having a problem is because they are not following the torque settings, the torque setting is so low some people do not believe it and crank on the little bugar resulting in an o **** moment.

 

[Claviger]

Look what I found, not sure on the length but a washer or two could easily solve a tiny bit too much length:
Kawasaki KX65 KX85 KX100 M10x1.5 Billet Aluminum Magnetic Oil Drain Plug Bolts | eBay

Or for less green:
NiceCNC M10x1.5 Oil Drain Plug Bolt Washer Kit For Kawasaki KX65 125 250/F 450F | eBay

 

[Bedifferent]

I suppose I’ll add this to the list of maintenance things I’ll do this year . When the tires done and I do the splines I’ll do the fluid as well.

A steel replacement bolt will be much cheaper than Alu or Ti, but, if I take a bolt off a new Alu or Ti goes back on, just a me thing

I guess I don't recall the bolt being aluminum. Hmmm...is it? Anyway, if I ever worry about the seize factor between steel and aluminum like a spark plug and a aluminum head, I'll use a little never seize and make sure I torque properly. God forbid I should ever have to try and fish a magnet or part of a broken bolt out of the final drive. That is grief I dont need.

 

[Bedifferent]

Look what I found, not sure on the length but a washer or two could easily solve a tiny bit too much length:
Kawasaki KX65 KX85 KX100 M10x1.5 Billet Aluminum Magnetic Oil Drain Plug Bolts | eBay

Or for less green:
NiceCNC M10x1.5 Oil Drain Plug Bolt Washer Kit For Kawasaki KX65 125 250/F 450F | eBay

And I even have a $25 ebay gift card left over from Christmas.