These sets consist of high temperature/heat resistant, silicone gray dust boots and pressure seals, manufactured by Frenkit Performance for most late-model Brembo calipers. These are the perfect components for street and track-oriented performance vehicles!
 
These are silicon dust boots and high temperature pressure seals and are recommended for track/racing/high performance driving events.
 
Included are the following components:
28mm High Temp Gray Silicone Dust Boot, Quantity 2
28mm Pressure Seal, Quantity 2
32mm High Temp Gray Silicone Dust Boot, Quantity 2
32mm Pressure Seal, Quantity 2
38mm High Temp Gray Silicone Dust Boot, Quantity 2
38mm Pressure Seal, Quantity 2
Caliper Temperature Sticker - included free!
 
This is also is an OE replacement for StopTech kit part numbers:
143.99028K
143.99032K
143.99038K
 
This seal kit replaces OE Brembo dust boot part numbers:
20.4872.40 (20 4872 40) - 28mm
20.4872.42 (20 4872 42) - 32mm
20.4872.45 (20 4872 45) - 38mm
 
This seal kit replaces OE Brembo pressure seal part numbers:
05.5955.52 (05 5955 52) - 28mm
05.5955.54 (05 5955 54) - 32mm
05.5955.57 (05 5955 57) - 38mm
 
Typically on a 6-Piston caliper, there are two of each piston size, so this combination should service one front caliper (6 pistons total).  This kit is assembled specifically for the Porsche 996 and 997 GT3 with iron rotors; however, these may also work on other applications.  This kit will may work for many aftermarket Brembo or StopTech 6-piston caliper combinations.