Profile Racing Flush Crank Bolt Kit
Flush Mount Crank Bolts come in 3 sizes:
A. the 3/8 x 24 version for solid spindle crank sets
B. the Gun Drilled Hollow M12 x 1.25 version for our GDH spindle crank sets, and
C. the 7/16 x 20 version for the old solid SS Crank spindle.
A pair of Solid Flush Mount bolts weighs 36g, and a pair of the GDH Bolts weighs 40g / 1.4oz.
CrMo GDH Crank bolts now use 6mm allen key.