Bruno's replacement splines for the BMW Bevel drive Ring gear
are made from Heat treatable carbon steel and case hardened (47-52RWc)
for greater impact strength which provide longer life and less wear than the OEM part.
This method of rebuilding a BMW spline has the advantage over traditional
rebuilds using Nickel based Alloys because the case
hardened Tooth contact surface is nearly indestructible from impact.
It is recommended to
replace the spline dog in the wheel at the same time to have both spline
surfaces mate properly to avoid premature wear and drive line lash.
Current rebuildable models:
1955-1969 BMW R 50-R69 models
1970-1984 all Twin shock (double sided swing arm) BMW R50, R60, R65, R75,
R80, R90, R100 models