These big bore pistons work with the stock 4-3/8" stroke flywheels to convert any 2007-'16 HD® big twin engine from 96" or 103" to 106" displacement with 10:1 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. Additionally, the low friction coating on the piston skirt makes taking measurements very difficult. 3.927" .010" bore.
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 2007-2016 |
Harley-Davidson |
FLHR Road King |
Base |
| 2008-2013 |
Harley-Davidson |
FLHRC Road King Classic |
Base |
| 2007 |
Harley-Davidson |
FLHRS Road King Custom |
Base |
| 2007-2009 |
Harley-Davidson |
FLHT Electra Glide Standard |
Base |
| 2009-2013 |
Harley-Davidson |
FLHTC Electra Glide Classic |
Base |
| 2009-2016 |
Harley-Davidson |
FLHTCU Electra Glide Ultra Classic |
Base |
| 2015-2016 |
Harley-Davidson |
FLHTCUL Electra Glide Ultra Classic Low |
Base |
| 2009 |
Harley-Davidson |
FLHTCUSE4 CVO Ultra Classic Electra Glide |
Base |
| 2010 |
Harley-Davidson |
FLHTCUSE5 CVO Ultra Classic Electra Glide |
Base |
| 2009,2011-2014 |
Harley-Davidson |
FLHTCUTG Tri Glide Ultra |
Base |
| 2009-2013 |
Harley-Davidson |
FLHTCUTG Tri Glide Ultra Classic |
Base |
| 2010-2014 |
Harley-Davidson |
FLHTK Electra Glide Ultra Limited |
Base |
| 2015-2017 |
Harley-Davidson |
FLHTKSE CVO Limited |
Base |
| 2007-2016 |
Harley-Davidson |
FLHX Street Glide |
Base |
| 2014,2016 |
Harley-Davidson |
FLHXS Street Glide Special |
Base |
| 2015-2017 |
Harley-Davidson |
FLHXSE CVO Street Glide |
Base |
| 2011 |
Harley-Davidson |
FLHXSE2 CVO Street Glide |
Base |
| 2012 |
Harley-Davidson |
FLHXSE3 CVO Street Glide |
Base |
| 2015-2016 |
Harley-Davidson |
FLRT Freewheeler |
Base |
| 2012-2017 |
Harley-Davidson |
FLS Softail Slim |
Base |
| 2016-2017 |
Harley-Davidson |
FLSS Softail Slim S |
Base |
| 2007-2017 |
Harley-Davidson |
FLSTC Heritage Softail Classic |
Base |
| 2007-2017 |
Harley-Davidson |
FLSTF Fat Boy |
Base |
| 2010-2016 |
Harley-Davidson |
FLSTFB Fat Boy Lo |
Base |
| 2016-2017 |
Harley-Davidson |
FLSTFBS Fat Boy S |
Base |
| 2007-2014,2017 |
Harley-Davidson |
FLSTN Softail Deluxe |
Base |
| 2014-2015 |
Harley-Davidson |
FLSTNSE CVO Softail Deluxe |
Base |
| 2008-2011 |
Harley-Davidson |
FLSTSB Cross Bones |
Base |
| 2007-2009 |
Harley-Davidson |
FLTR Road Glide |
Base |
| 2009 |
Harley-Davidson |
FLTRSE3 CVO Road Glide |
Base |
| 2011-2013,2016 |
Harley-Davidson |
FLTRU Road Glide Ultra |
Base |
| 2015-2016 |
Harley-Davidson |
FLTRUSE CVO Road Glide Ultra |
Base |
| 2015-2016 |
Harley-Davidson |
FLTRX Road Glide |
Base |
| 2010-2013 |
Harley-Davidson |
FLTRX Road Glide Custom |
Base |
| 2015-2016 |
Harley-Davidson |
FLTRXS Road Glide Special |
Base |
| 2012 |
Harley-Davidson |
FLTRXSE CVO Road Glide Custom |
Base |
| 2008-2009 |
Harley-Davidson |
FXCW Rocker |
Base |
| 2008-2011 |
Harley-Davidson |
FXCWC Rocker C |
Base |
| 2007-2010 |
Harley-Davidson |
FXD Dyna Super Glide |
Base |
| 2007-2012,2014-2016 |
Harley-Davidson |
FXDB Street Bob |
Base |
| 2007-2012,2014 |
Harley-Davidson |
FXDC Super Glide Custom |
Base |
| 2008-2012,2014-2017 |
Harley-Davidson |
FXDF Fat Bob |
Base |
| 2009 |
Harley-Davidson |
FXDFSE CVO Dyna Fat Bob |
Base |
| 2007-2009,2014-2017 |
Harley-Davidson |
FXDL Dyna Low Rider |
Base |
| 2014-2017 |
Harley-Davidson |
FXDL Low Rider |
Base |
| 2016-2017 |
Harley-Davidson |
FXDLS Low Rider S |
Base |
| 2007-2008,2010-2012,2014-2017 |
Harley-Davidson |
FXDWG Dyna Wide Glide |
Base |
| 2011-2013 |
Harley-Davidson |
FXS Blackline |
Base |
| 2014-2017 |
Harley-Davidson |
FXSB Breakout |
Base |
| 2013 |
Harley-Davidson |
FXSBSE CVO Breakout |
Base |
| 2016-2017 |
Harley-Davidson |
FXSE CVO Pro Street Breakout |
Base |
| 2007 |
Harley-Davidson |
FXST Softail Standard |
Base |
| 2007-2009 |
Harley-Davidson |
FXSTB Night Train |
Base |
| 2008,2010 |
Harley-Davidson |
FXSTC Softail Custom |
Base |
| 2007 |
Harley-Davidson |
FXSTD Softail Deuce |
Base |
| 2009 |
Harley-Davidson |
FXSTSSE3 CVO Softail Springer |
Base |
