S&S Cycle

31-2100

S&S Cycle Crankshaft Breather Reed Valves - +.30 31-2100

SKU: PTLD 0920-0009

Oil Filters

Consists of 3 steel reeds that are normally in the closed position
When pistons travel downward in the cylinders, the air in the crankcase is compressed and pressure in the crankcase below the pistons increases
Pressure causes the reeds to open, allowing the air and oil mist in the crankcase to escape into the cam chest
When pistons change direction and begin traveling back upward in the cylinders, a vacuum is created in the close, preventing air from entering the crankcase
A slight vacuum is maintained in the crankcase and oil scavenging is greatly improved

Consists of 3 steel reeds that are normally in the closed position
When pistons travel downward in the cylinders, the air in the crankcase is compressed and pressure in the crankcase below the pistons increases
Pressure causes the reeds to open, allowing the air and oil mist in the crankcase to escape into the cam chest
When pistons change direction and begin traveling back upward in the cylinders, a vacuum is created in the close, preventing air from entering the crankcase
A slight vacuum is maintained in the crankcase and oil scavenging is greatly improved
Fits 84-99 Evolution Big Twin models


This Item Fits the Following Applications:
1999 Harley Davidson FXSTB Night Train
1999 Harley Davidson FXR3
1999 Harley Davidson FXR2
1999 Harley Davidson FXDX Dyna Super Glide Sport
1998-1999 Harley Davidson FLTRI Road Glide
1998-1999 Harley Davidson FLTR Road Glide
1998-1999 Harley Davidson FLHRCI Road King Classic
1997-1999 Harley Davidson FLSTS Heritage Springer
1996-1999 Harley Davidson FLHTCI Electra Glide Classic
1996-1997 Harley Davidson FLHRI Road King
1995-1999 Harley Davidson FXDS-Conv Dyna Convertible
1995-1999 Harley Davidson FXD Dyna Super Glide
1995-1999 Harley Davidson FLHTCUI Electra Glide Ultra Classic
1995-1997 Harley Davidson FXSTSB Bad Boy
1994-1999 Harley Davidson FLHR Road King
1994-1996 Harley Davidson FLSTN Heritage Softail Special
1993-1999 Harley Davidson FXDWG Dyna Wide Glide
1993-1999 Harley Davidson FXDL Dyna Low Rider
1993 Harley Davidson FLSTN Heritage Softail Nostalgia
1992 Harley Davidson FXDC Super Glide Custom
1992 Harley Davidson FXDB-D Dyna Glide Daytona
1991 Harley Davidson FXDB-S Dyna Glide Sturgis
1990-1999 Harley Davidson FLSTF Fat Boy
1990-1993 Harley Davidson FXRS-Conv Low Rider Sport Convertible
1989-1999 Harley Davidson FLSTC Heritage Softail Classic
1989-1997 Harley Davidson FLHTCU Electra Glid

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