These sets consist of high temperature heat resistant, silicone gray dust boots and high temperature pressure seals, manufactured by Frenkit Performance for most late-model Brembo calipers. These are the perfect components for street and track-oriented performance vehicles!
 
Included are the following components:
36mm High Temp Gray Silicone Dust Boot, Quantity 2
36mm Pressure Seal, Quantity 2
44mm High Temp Gray Silicone Dust Boot, Quantity 2
44mm Pressure Seal, Quantity 2
 
This also replaces StopTech Rebuild Kit part number:
143.99036K - 36mm
143.99044K - 44mm
This seal kit replaces OE Brembo Dust Boot part numbers:
20.4872.44 (20 4872 44) - 36mm
20.4872.48 (20 4872 48) - 44mm
This seal kit replaces OE Brembo Pressure Seal part numbers:
05.5955.56 (05 5955 56) - 36mm
05.5955.60 (05 5955 60) - 44mm
This seal kit replaces OE Brembo Rebuild Kit part numbers:
105.5955.56 (105 5955 56) - 36mm
105.5955.60 (105 5955 60) - 44mm
 
Common cars this fits are Porsche 911 997.1/2 Carrera S/4S, 993 C2/C4.
 
Typically on a 4-Piston caliper, there are two of each piston size, so this combination should service one front 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.