Hi all,

Does anybody know what the measurements are of the stock bolts on stock risers of a 2015 Fat Bob FXDF?

 

1/2 13 x 2 3/4

P.N 3471

 

Thanks sir. So I am getting 2"riser extensions and have the choice for these longer bolts, which should I get?
742288: 1/2x13x2 1/2" UNC for 1/2" extensions
742290: 1/2x13x3" UNC for 1" extensions
742292: 1/2x13x3 1/2" UNC for 1 1/2" extensions

Sorry for all the questions, but as a European guy these Inch size's are doing me in!

 

Show a pic of these "extensions" please
If they are just spacers installed at the bottom of the risers and are 2" thick , I would assume you need an additional 2" of bolt length ?
2 3/4 + 2 = 3 3/4

 

https://www.taco-motos.eu/en/handleb...-spacer-b.html

 

OK , they are just spacers.
adding 2" to bolt with 2" spacers will keep the same amount of thread engagement as stock ( 3 3/4 bolt)
I`m sure their 3 1/2 bolt will work fine also

 

Oke, thx, will buy this one:
742292: 1/2x13x3 1/2" UNC for 1 1/2" extensions

 

You might want to verify sufficient cable and wire length with a stack of cheap washers before ordering....

 

OK, if they say that bolt is for 1-1/2" spacers, and you're getting 2" spacers, you might want to confirm it first before you order. Remove one of the bolts you have now and measure from the underside of the head to the end of the shank. Add 2" to that to get the new length.