S&S 3.927" Big Bore Flat-Top Forged Piston Kit (106-3688)
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S&S 3.927" Big Bore Flat-Top Forged Piston Kit (106-3688)
$514.95
$434.68
(You save
$80.27
)
- These big bore pistons work with the stock 4" stroke flywheels to convert any 1999-'06 HD big twin engine from 88" to 97" displacement with 9.7:1 compression with stock heads
- Stock cylinders may be bored to accomodate larger pistons, but we recommend S&S 3.927" bore cylinders which feature high strength alloyed cast iron liners
- Pistons are compatible with stock rods with tapered wristpin ends
- S&S 3.927" bore pistons are machined to such close tolerances that it is not necessary to measure the piston. Just bore cylinders to nominal diameter +/- 0.0005" for correct clearance
- 4" stroke length
- Flat top piston head shape
- Piston kits include forged pistons (unless noted) rings, wrist pins and clips for a complete motor replacement
- Rings come as sets for two pistons
- Made in the U.S.A
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1999-2000 | Harley-Davidson | Dyna Convertible FXDS-Conv | |
| 2004-2006 | Harley-Davidson | Dyna Low Rider EFI FXDLI | |
| 1999-2005 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2006 | Harley-Davidson | Dyna Street Bob EFI FXDBI | |
| 2006 | Harley-Davidson | Dyna Super Glide 35th Anniversary FXD | |
| 2005-2006 | Harley-Davidson | Dyna Super Glide Custom EFI FXDCI | |
| 2005 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2004-2006 | Harley-Davidson | Dyna Super Glide EFI FXDI | |
| 1999-2005 | Harley-Davidson | Dyna Super Glide FXD | |
| 2004-2005 | Harley-Davidson | Dyna Super Glide Sport EFI FXDXI | |
| 1999-2005 | Harley-Davidson | Dyna Super Glide Sport FXDX | |
| 2001-2003 | Harley-Davidson | Dyna Super Glide T-Sport FXDX-T | |
| 2004-2006 | Harley-Davidson | Dyna Wide Glide EFI FXDWGI | |
| 1999-2005 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2001 | Harley-Davidson | Dyna Wide Glide Screamin Eagle FXDWG2 | |
| 2002 | Harley-Davidson | Dyna Wide Glide Screamin Eagle FXDWG3 | |
| 1999-2006 | Harley-Davidson | Electra Glide Classic EFI FLHTCI | |
| 1999-2005 | Harley-Davidson | Electra Glide Classic FLHTC | |
| 2003-2006 | Harley-Davidson | Electra Glide EFI FLHTI | |
| 1999-2006 | Harley-Davidson | Electra Glide FLHT | |
| 1999-2006 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | |
| 1999-2006 | Harley-Davidson | Road Glide EFI FLTRI | |
| 1999-2002 | Harley-Davidson | Road Glide FLTR | |
| 1999-2006 | Harley-Davidson | Road King Classic EFI FLHRCI | |
| 2004-2006 | Harley-Davidson | Road King Custom EFI FLHRSI | |
| 2004-2006 | Harley-Davidson | Road King Custom FLHRS | |
| 2000-2006 | Harley-Davidson | Road King EFI FLHRI | |
| 1999-2006 | Harley-Davidson | Road King FLHR | |