KB Forged Piston Kit Standard Bore (KB660C.STD)
- Pistons forged from 4032 aluminum alloy
- Offset pin design for quiet operation
- Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings
- Piston pin lock rings available separately
- Replacement rings are also available separately
- 3.875 in. Bore Size.
- 10.0:1 Compression Ratio.
NOTE: For '12-'17 103" Twin Cam and '07-'13 Twin Cam big bore 103" (with Screamin' Eagle 95 cc heads).
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2012-2013 | Harley-Davidson | Blackline FXS | |
| 2015-2017 | Harley-Davidson | Breakout FXSB | |
| 2012-2017 | Harley-Davidson | Dyna Fat Bob FXDF | |
| 2014-2017 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2014-2017 | Harley-Davidson | Dyna Street Bob FXDB | |
| 2014 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2012-2016 | Harley-Davidson | Dyna Switchback FLD | |
| 2012-2017 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2012-2013 | Harley-Davidson | Electra Glide Classic FLHTC | |
| 2015-2016 | Harley-Davidson | Electra Glide Low Ultra Classic FLHTCUL | |
| 2015 | Harley-Davidson | Electra Glide Low Ultra Limited FLHTKL | |
| 2012-2016 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | |
| 2012-2015 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | |
| 2012-2017 | Harley-Davidson | Fat Boy FLSTF | |
| 2012-2016 | Harley-Davidson | Fat Boy Lo FLSTFB | |
| 2015-2016 | Harley-Davidson | Freewheeler FLRT | |
| 2012-2017 | Harley-Davidson | Heritage Softail Classic FLSTC | |
| 2015-2016 | Harley-Davidson | Road Glide FLTRX | |
| 2015-2016 | Harley-Davidson | Road Glide Special FLTRXS | |
| 2012-2013 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2016 | Harley-Davidson | Road Glide Ultra FLTRU | |
| 2012-2013 | Harley-Davidson | Road King Classic FLHRC | |
| 2012-2016 | Harley-Davidson | Road King FLHR | |
| 2012-2017 | Harley-Davidson | Softail Deluxe FLSTN | |
| 2012-2017 | Harley-Davidson | Softail Slim FLS | |
| 2012-2016 | Harley-Davidson | Street Glide FLHX | |
| 2014-2016 | Harley-Davidson | Street Glide Special FLHXS | |
| 2012-2013 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | |
| 2015 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | |
| 2016 | Harley-Davidson | Tri Glide Ultra FLHTCUTG | |
| 2016 | Harley-Davidson | Ultra Limited FLHTK | |
| 2016 | Harley-Davidson | Ultra Limited Low FLHTKL | |