Middleburn self extracting bolts

[H]

Gentleman your ears please...

Which style of middleburn bolt (either style A or B) is right for the following vintage:

1991 bike?

1994 bike?

1997 bike?

Style A (multiple drillings on lock ring)

Or

Style B (two drillings on lock ring)

 

[Rampage]

Re:

Out of interest, what size Allen keys do the two different types take?

 

[just jacques]

I think style A is the earlier one as its been discontinued.

 

[FluffyChicken]

Re:

1994 neither, it has to Syncros.

Just buy the Brand-X they are twin home and pretty much the same iirc as middleburn.

 

[ferrus]

Re: Re:

Out of interest, what size Allen keys do the two different types take?

6mm, at least on the multi-hole one

 

[Huelse]

These should be from around 1996-98.