AP Racing CP8350 Essex "Sprint" and "Endurance" caliper: 5.4lbs (Caliper + bracket)
AP Racing CP3862 "Sprint" rotor: 11.2lbs (ring only), 12.2lbs (ring + hat + hardware)
AP Racing CP3908 "Endurance" rotor: 16.4lbs (ring only), 17.6 lbs (ring + hat + hardware)
The AP Racing Calipers and rotor setups use a 21mm pad (16mm pad material) vs the 15mm pad (10mm pad material) of the stock setup and many BBKs. Additionally, these setups use 32mm thick rotors, instead of 28mm thick rotors of many common BBKs (e.g. Stoptech).
Anyone local is welcome to stop by our shop and hold these parts in their hands to see how light they are.
Sprint template:
http://www.essexparts.com/media/down...eltemplate.pdf
Endurance template:
http://www.essexparts.com/media/down...eltemplate.pdf
Yeah, we love our setup. We have a long term (1 year) review coming soon.