S&S Sidewinder Valve Spring Kits For Harley Big Twin 1984-2004
  • S&S Sidewinder Valve Spring Kits For Harley Big Twin 1984-2004

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S&S Sidewinder Valve Spring Kits For Harley Big Twin 1984-2004 Videos

S&S Sidewinder Valve Spring Kits For Harley Big Twin

Sidewinder .650" Valve Spring Kits for Big Twins with stock heads that use both 7mm and 5/16” valve stems as well as all S&S Super Stock heads that use 5/16” valve stems. Works well with cams up to .650" lift. Manufactured from ultra clean high silicon Kobe alloy wire then micro shot peened and nitrided. CNC machined 9 degree locks. High performance conical single wire spring. Chromoly forged retainers.


  • Include springs, shims, upper and lower collars and keys
  • For valve lift to .650" with 1.860"/178 lbs. installed height, 376 lbs. at max lift
  • Max 6500 rpm
  • Made in the USA


This Product Fits:
Harley Davidson
Disc Glide FXRDG 1984
Dyna Convertible FXDS 19942000
Dyna Glide Custom FXDC 1992
Dyna Glide Daytona FXDB-D 1992
Dyna Glide Sturgis FXDB-S 1991
Dyna Low Rider FXDL/I 19932004
Dyna Super Glide FXD/I 19952004
Dyna Super Glide Sport FXDX 19992004
Dyna Super Glide Sport Touring FXDXT 2001, 2002, 2003
Dyna Wide Glide FXDWG/I 19932004
Electra Glide Classic FLHTC/I 19842004
Electra Glide Special FLHX 1984
Electra Glide Sport FLHS 1984, 19871993
Electra Glide Standard FLHT/I 19842004
Electra Glide Ultra Classic FLHTCU/I 19872004
Fat Bob FXEF 1985
FLH 1984, 1985
Low Glide/Low Rider FXRS 19841993
Low Rider Chrome FXRC 1985, 1986, 1987, 1988
Low Rider Custom FXLR 19861994
Low Rider Sport FXRS-SP 19871993
Road Glide FLTR/I 19982004
Road King Classic FLHRC/I 19942004
Road King Custom FLHRS/I 19952004
Road King FLHR/I 19942004
Softail Bad Boy Springer FXSTSB 1995, 1996, 1997
Softail Custom FXSTC/I 19861999
Softail Custom/Nostalgia/Special/Deluxe FLSTN/I 1993, 1994, 1995, 1996
Softail Deuce FXSTD/I 19992004
Softail Fat Boy FLSTF/I 19902004
Softail Heritage Classic FLSTC/I 19862004
Softail Heritage FLST/I 1986, 1987, 1988, 1989, 1990
Softail Heritage Springer FLSTS/I 19972003
Softail Night Train FXSTB/I 19992004
Softail Springer FXSTS/I 19882004
Softail Standard FXST/I 19842004
Sport Glide FXRT 19841992
Sport Glide Grand Touring FXRD 1986
Super Glide FXE 1984, 1985
Super Glide FXR 1994
Tour Glide Classic FLTC/I 19841991
Tour Glide FLT 19841991
Tour Glide Ultra Classic FLTCU/I 19891995
Wide Glide FXWG 1984, 1985, 1986
Product Style RevZilla Item # Manufacturer Product # Availability
S&S Sidewinder Valve Spring Kits For Harley Big Twin 1984-2004 1181990 900-0050 Available: Requires 1-3 business days lead time prior to shipment


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