S&S Cycle
S&S Cycle 31-2100 Crankcase Breather Reed Valve +.030" for 1993-1999 Harley-Davidson Big Twin
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- SKU:
- 0920-0009
Description
This is for +0.030" Diameter Thread Size - Typically for use in engines with damaged breather bores
- New-style breather is not dependent on the rotation of the crankshaft to make it open and close. Instead, reeds open when pressure in the crankcase becomes greater than pressure in the cam chest, and close when pressure in the cam chest is equal to or greater than pressure in the crankcase
- By opening and closing "on demand," the reed valves automatically compensate for lag time associated with accelerating the mass of air as it is forced out of the crankcase, increasing performance and stopping high-rpm oil carryover in engines with marginal piston ring seal
- Installation is fast and simple; no aligning timing marks, and no rotating parts
- Made in the U.S.A.
| 1999 | Harley-Davidson | FXR 3 | - | - |
| 1999 | Harley-Davidson | Softail Night Train FXSTB | - | - |
| 1999 | Harley-Davidson | FXR 2 | - | - |
| 1998 | Harley-Davidson | Road King Classic EFI FLHRC | - | - |
| 1998 | Harley-Davidson | Road Glide EFI FLTR | - | - |
| 1998 | Harley-Davidson | Road Glide FLTR | - | - |
| 1997-1999 | Harley-Davidson | Softail Heritage Springer FLSTS | - | - |
| 1996-1998 | Harley-Davidson | Road King EFI FLHR | - | - |
| 1996 | Harley-Davidson | Tour Glide Ultra Classic EFI FLTCU | - | - |
| 1995-1998 | Harley-Davidson | Electra Glide Standard FLHT | - | - |
| 1995-1998 | Harley-Davidson | Super Glide FXD | - | - |
| 1995-1998 | Harley-Davidson | Electra Glide Classic EFI FLHTCI | - | - |
| 1995-1998 | Harley-Davidson | Dyna Convertible FXDS-CONV | - | - |
| 1995-1998 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | - | - |
| 1995-1997 | Harley-Davidson | Softail Bad Boy FXSTSB | - | - |
| 1994-1998 | Harley-Davidson | Road King FLHR | - | - |
| 1994-1996 | Harley-Davidson | Softail Heritage Special FLSTN | - | - |
| 1993-1999 | Harley-Davidson | Softail Springer FXSTS | - | - |
| 1993-1999 | Harley-Davidson | Softail Custom FXSTC | - | - |
| 1993-1999 | Harley-Davidson | Softail Heritage Classic FLSTC | - | - |
| 1993-1999 | Harley-Davidson | Softail Fat Boy FLSTF | - | - |
| 1993-1998 | Harley-Davidson | Wide Glide FXDWG | - | - |
| 1993-1998 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | - | - |
| 1993-1998 | Harley-Davidson | Low Rider FXDL | - | - |
| 1993-1998 | Harley-Davidson | Electra Glide Classic FLHTC | - | - |
| 1993-1996 | Harley-Davidson | Tour Glide Ultra Classic FLTCU | - | - |
| 1993-1994 | Harley-Davidson | Low Rider Custom FXLR | - | - |
| 1993-1994 | Harley-Davidson | Super Glide FXR | - | - |
| 1993-1994 | Harley-Davidson | Tour Glide Classic FLTC | - | - |
| 1993, 1999 | Harley-Davidson | Softail Standard FXST | - | - |
| 1993 | Harley-Davidson | Low Rider FXRS | - | - |
| 1993 | Harley-Davidson | Softail Nostalgia FLSTN | - | - |
| 1993 | Harley-Davidson | Low Rider Convertible FXRS-CONV | - | - |
| 1993 | Harley-Davidson | Low Rider Sport FXRS-SP | - | - |
| 1993 | Harley-Davidson | Sport Glide FXRT | - | - |
| 1993 | Harley-Davidson | Electra Glide Sport FLHS | - | - |