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
Caliper Temperature Sticker - included free!
 
This seal kit is also OE replacement for StopTech Rebuild Kit part numbers:
143.99028K - 28mm
143.99032K - 32mm
 
This seal kit replaces OE Brembo Dust Boot part numbers:
20.4872.40 (20 4872 40) - 28mm
20.4872.42 (20 4872 42) - 32mm
 
This seal kit replaces OE Brembo Pressure Seal part numbers:
05.5955.52 (05 5955 52) - 28mm
05.5955.54 (05 5955 54) - 32mm
 
This seal kit replaces OE Brembo Rebuild Kit part numbers:
105.5955.52 (105 5955 52) - 28mm
105.5955.54 (105 5955 54) - 32mm
 
Typically on a 4-Piston caliper, there are two of each piston size, so this combination should service one caliper (4 pistons total).  These are not application specific, rather for those who may have a single torn dust boot or failed pressure seal or for those who are rebuilding their calipers; however, this kit will may work for many aftermarket Brembo or StopTech 4-piston caliper combinations.
 
Common applications are on the Dodge Challengers/Chargers/SRT-8 vehicles.