For lower duty applications and on smaller discs a bolted mounting is sometimes preferred for strength and simplicity, especially for off-road applications (e.g. Rallies) where debris may clog a floating mechanism leading to run-out and disc vibration. AP Racing have changed the cap headed bolts historically used for mounting discs to bells, to an E8 – 6 Lobe bolt with an improved low friction coating, see table below.

**Note: AP Racing standard disc mounting hole size is 6.40 / 6.45mm diameter. AP Racing recommend a bolt/nut tightening torque for a disc and bell of 14Nm (10.5Lb/ft)

Advantages over Cap Head Bolts:

• More positive drive
• More consistent clamping loads
• Lighter
• Better corrosion resistance
• Less prone to damage
• Improved airflow

Part Numbering

Installation