Join Date: Aug 2002
Location: At the apex, blocking your pass.
Welcome to the wonderful world of FMSI numbers!
FMSI stands for the Friction Materials Standards Institute. They maintain a standard database of brake pad physical designs or shapes. Every brake pad sold matches one of these designs. You can think of a pad's FMSI number as a generic part number for brake pads.
If you know the FMSI number for a brake caliper, you can (in theory,) tell a pad manufacturer the number and they can tell you which of their part numbers matches that FMSI number.
The Grigg's (Sierra) calipers use D101, D102, and D103 FMSI numbers.
The PBR Cobra uses a D412 pad in front. Fox mustangs uses D199, D200, and D499 in front.
-- Robert King
NASA AI #42, Texas
Instructor, NASA Texas Region
Instructor, TWS Perf. Driving School