They are an utter DONKEY of a job to replace , you would not do it for fun !
I personally have never had one break in 22 years of riding Harleys , all Softails and Dynas
The ones I have seen break while I was out on a run with others were Ultras and Roadkings
Obviously a weight bearing difference there
In my case I'm not and never have been a "drunken burnout" kind of dude.
Drunken ! Well shit yeah and there's nothing wrong with that !
I have been present on overnighters where the odd individual , drunk of course , burnout breaks his belt !ute home for them !
The belt in the photos looks all right to me , and I've always been under the impression OEM belts are good for 100,000 MILES
That's 160,000 K's to us in Australia. To pay a shop is exxy on the labour , then "seals while you're in there" blah blah....
Perhaps the "scunted" belt shown by Tronan is/was not an OEM Harley belt ?
I have heard that aftermarket/replacement belts can and do delaminate like that photo.
In general and worldwide , OEM Harley belts ( made by some mob for them of course !) get a very good rep.
I've seen a few chain conversions here in Perth over the years , always a backward step ( in my humble opinion !)
More maintenance , more mess , just more of everything...
There are many many Harleys of all models here with 120R conversions , most all still on the OEM belts with minimal dramas.
Like I mentioned earlier , any belt breakages I have personally witnessed have been during/post "burnout" shenanigans !
I used to run fast Kawasakis since 1983 to 5 years ago , all chain bikes of course. Tsubaki "heavy duty Nickel Plated" jobs I would use on them.
And they were still "mega maintenance". One of the many joys of HD's since my first in 1995 is NO/MINIMAL maintenance !