Titanium Rear Brake Caliper Mounting Bolt Kit DualDrive These are the bolts that mount the rear caliper to the bike. These alternatives are made from Grade 5 Titanium to maximise strength and durability with fantastic weight saving properties. Sold here in our ever popular race spec design, which benefit from a reduced socket size that has been drilled to 1.6mm on each flat for ease of lock wiring and the inside of the hex is dished for additional weight saving with no compromise in strength. For those who truly value attention to detail. DualDrive features: Head design that is compatible with both Socket and Allen Keys. Forged Bolts with rolled threads for superior strength. Titanium is also available in black, which not only looks great but has other benefits too. This beautiful long lasting black finish results from an application of Diamond Like Carbon Coating (DLC) This gives supreme hardness and corrosion resistance provided by a nano composite coating, which increases the fastener lifetime dramatically and helps to prevent galling. By incorporating them right from the beginning, the overall system cost can be held level or may even be reduced. Please note the colour finish on Titanium is not identical to our Aluminium range.