BMW R1200RT/R1250RT Forum

Hello Guys,


I am ordering from Pro-Bolt a selection of stainless steel fasteners.


I am looking for the dimensions of the rear brake caliper mounting bolts on a 2012 R1200RT


From what I can see via the parts fiche it is a M8x25......but it has a trapezodial thread.....what is that? or am I reading wrong?


Chris ;D

Trapezodial thread is used in high load situations. The thread top and bottom are squared off and the side wall is usually at a steeper angle. Personally I would mess with brake components that have been designed and specified for that particular application such as good "shear" properties required by brake calipers.

Our Gee wrote: Trapezodial thread is used in high load situations. The thread top and bottom are squared off and the side wall is usually at a steeper angle. Personally I would mess with brake components that have been designed and specified for that particular application such as good "shear" properties required by brake calipers.

Thanks Gee,


The grade of stainless that Pro-bolt use is strong enough for brake situations, however i will give it a pass if its a fancy thread, its fancy for a reason I imagine!!


Chris