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With a single lug nut keeping the new AP rotor flush against the hub, the new aluminum six-piston caliper was slid into place and bolted down using the new 12mm allen bolts. Each bolt was torqued to 45 lb-ft. During this step, we found the only problem with the AP kit. The new 12mm Allen bolts were roughly 5mm too long and bottomed out on the spindle, which marred the last few threads. We cut down the bolts and they worked perfectly.