S&S Cycle Street Performance .585in Valve Spring Kit — Fits 1984-2004 Harley-Davidson Big Twin

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

S&S Cycle Street Performance .585in Valve Spring Kit for 84-04 Big Twin

Unleash the full potential of your 1984-2004 Harley-Davidson Big Twin engine with the S&S Cycle Street Performance .585in Valve Spring Kit. Engineered for enthusiasts seeking improved valve train stability and higher RPM capabilities, this kit is crucial for performance camshaft upgrades or simply enhancing your engine's reliability under demanding conditions.

Optimized for Street and Performance Riding

These valve springs are meticulously designed to handle valve lifts up to .585 inches, making them ideal for a wide range of street performance camshafts. The advanced spring design minimizes valve float, ensuring consistent power delivery and extending the life of your valve train components. Experience smoother operation and a more responsive engine.

  • Designed for 1984-2004 Harley-Davidson Big Twin models.
  • Supports valve lifts up to .585 inches.
  • Enhances valve train stability and reduces valve float.
  • Ideal for performance camshaft upgrades.
  • Improves engine responsiveness and high-RPM reliability.

Upgrade your Big Twin's valve train with S&S Cycle's proven performance. Find this .585in Valve Spring Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1997-2004 Harley-Davidson FLHR Road King Base
1998-2004 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2004 Harley-Davidson FLHRI Road King Base
2004 Harley-Davidson FLHRS Road King Custom Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1984-2004 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2004 Harley-Davidson FLHTCI Electra Glide Classic Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
1988-2004 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2004 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2004 Harley-Davidson FLSTF Fat Boy Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
1998-2004 Harley-Davidson FLTR Road Glide Base
1998-2004 Harley-Davidson FLTRI Road Glide Base
1995-2004 Harley-Davidson FXD Dyna Super Glide Base
1993-2004 Harley-Davidson FXDWG Dyna Wide Glide Base
1999-2004 Harley-Davidson FXDX Dyna Super Glide Sport Base
2001-2003 Harley-Davidson FXDXT Dyna Super Glide T-Sport Base
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1984-1992 Harley-Davidson FXRS Low Glide Base
1984-1992 Harley-Davidson FXRT Sport Glide Base
1984-1985 Harley-Davidson FXSB Low Rider - Belt Base
2001-2004 Harley-Davidson FXSTBI Night Train Base
1986-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2004 Harley-Davidson FXSTD Softail Deuce Base
2001-2004 Harley-Davidson FXSTDI Softail Deuce Base
1988-2004 Harley-Davidson FXSTS Springer Softail Base
1995-1997 Harley-Davidson FXSTSB Bad Boy Base
2001-2004 Harley-Davidson FXSTSI Springer Softail Base
1984-1986 Harley-Davidson FXWG Wide Glide Base
1986-1987 Harley-Davidson XLH1100 Base
1986-2003 Harley-Davidson XLH883 Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

S&S Cycle Street Performance .585in Valve Spring Kit for 84-04 Big Twin

Unleash the full potential of your 1984-2004 Harley-Davidson Big Twin engine with the S&S Cycle Street Performance .585in Valve Spring Kit. Engineered for enthusiasts seeking improved valve train stability and higher RPM capabilities, this kit is crucial for performance camshaft upgrades or simply enhancing your engine's reliability under demanding conditions.

Optimized for Street and Performance Riding

These valve springs are meticulously designed to handle valve lifts up to .585 inches, making them ideal for a wide range of street performance camshafts. The advanced spring design minimizes valve float, ensuring consistent power delivery and extending the life of your valve train components. Experience smoother operation and a more responsive engine.

  • Designed for 1984-2004 Harley-Davidson Big Twin models.
  • Supports valve lifts up to .585 inches.
  • Enhances valve train stability and reduces valve float.
  • Ideal for performance camshaft upgrades.
  • Improves engine responsiveness and high-RPM reliability.

Upgrade your Big Twin's valve train with S&S Cycle's proven performance. Find this .585in Valve Spring Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1997-2004 Harley-Davidson FLHR Road King Base
1998-2004 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2004 Harley-Davidson FLHRI Road King Base
2004 Harley-Davidson FLHRS Road King Custom Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1984-2004 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2004 Harley-Davidson FLHTCI Electra Glide Classic Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
1988-2004 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2004 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2004 Harley-Davidson FLSTF Fat Boy Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
1998-2004 Harley-Davidson FLTR Road Glide Base
1998-2004 Harley-Davidson FLTRI Road Glide Base
1995-2004 Harley-Davidson FXD Dyna Super Glide Base
1993-2004 Harley-Davidson FXDWG Dyna Wide Glide Base
1999-2004 Harley-Davidson FXDX Dyna Super Glide Sport Base
2001-2003 Harley-Davidson FXDXT Dyna Super Glide T-Sport Base
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1984-1992 Harley-Davidson FXRS Low Glide Base
1984-1992 Harley-Davidson FXRT Sport Glide Base
1984-1985 Harley-Davidson FXSB Low Rider - Belt Base
2001-2004 Harley-Davidson FXSTBI Night Train Base
1986-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2004 Harley-Davidson FXSTD Softail Deuce Base
2001-2004 Harley-Davidson FXSTDI Softail Deuce Base
1988-2004 Harley-Davidson FXSTS Springer Softail Base
1995-1997 Harley-Davidson FXSTSB Bad Boy Base
2001-2004 Harley-Davidson FXSTSI Springer Softail Base
1984-1986 Harley-Davidson FXWG Wide Glide Base
1986-1987 Harley-Davidson XLH1100 Base
1986-2003 Harley-Davidson XLH883 Base

Product Details

Product Description

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

S&S Cycle Street Performance .585in Valve Spring Kit for 84-04 Big Twin

Unleash the full potential of your 1984-2004 Harley-Davidson Big Twin engine with the S&S Cycle Street Performance .585in Valve Spring Kit. Engineered for enthusiasts seeking improved valve train stability and higher RPM capabilities, this kit is crucial for performance camshaft upgrades or simply enhancing your engine's reliability under demanding conditions.

Optimized for Street and Performance Riding

These valve springs are meticulously designed to handle valve lifts up to .585 inches, making them ideal for a wide range of street performance camshafts. The advanced spring design minimizes valve float, ensuring consistent power delivery and extending the life of your valve train components. Experience smoother operation and a more responsive engine.

  • Designed for 1984-2004 Harley-Davidson Big Twin models.
  • Supports valve lifts up to .585 inches.
  • Enhances valve train stability and reduces valve float.
  • Ideal for performance camshaft upgrades.
  • Improves engine responsiveness and high-RPM reliability.

Upgrade your Big Twin's valve train with S&S Cycle's proven performance. Find this .585in Valve Spring Kit at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1997-2004 Harley-Davidson FLHR Road King Base
1998-2004 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2004 Harley-Davidson FLHRI Road King Base
2004 Harley-Davidson FLHRS Road King Custom Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1984-2004 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2004 Harley-Davidson FLHTCI Electra Glide Classic Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
1988-2004 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2004 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2004 Harley-Davidson FLSTF Fat Boy Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
1998-2004 Harley-Davidson FLTR Road Glide Base
1998-2004 Harley-Davidson FLTRI Road Glide Base
1995-2004 Harley-Davidson FXD Dyna Super Glide Base
1993-2004 Harley-Davidson FXDWG Dyna Wide Glide Base
1999-2004 Harley-Davidson FXDX Dyna Super Glide Sport Base
2001-2003 Harley-Davidson FXDXT Dyna Super Glide T-Sport Base
1987-1994 Harley-Davidson FXLR Low Rider Custom Base
1999 Harley-Davidson FXR3 Base
2000 Harley-Davidson FXR4 Base
1984-1992 Harley-Davidson FXRS Low Glide Base
1984-1992 Harley-Davidson FXRT Sport Glide Base
1984-1985 Harley-Davidson FXSB Low Rider - Belt Base
2001-2004 Harley-Davidson FXSTBI Night Train Base
1986-1999 Harley-Davidson FXSTC Softail Custom Base
2000-2004 Harley-Davidson FXSTD Softail Deuce Base
2001-2004 Harley-Davidson FXSTDI Softail Deuce Base
1988-2004 Harley-Davidson FXSTS Springer Softail Base
1995-1997 Harley-Davidson FXSTSB Bad Boy Base
2001-2004 Harley-Davidson FXSTSI Springer Softail Base
1984-1986 Harley-Davidson FXWG Wide Glide Base
1986-1987 Harley-Davidson XLH1100 Base
1986-2003 Harley-Davidson XLH883 Base

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