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The Keith Black KB348.010 95-inch Twin Cam piston set features a hypereutectic alloy cast in a permanent steel mold. This construction supports a lightweight piston design intended to help produce more power, improve fuel economy, and provide long service life. The pistons are .010 oversize for a 3.875-inch bore and provide a 9.3:1 compression ratio.
The alloy's low heat transfer helps keep the skirts cooler, minimizing piston expansion. Combined with high compression ring placement, the design is intended to support power and economy while reducing detonation and increasing top ring temperature. The Keith Black KB348.010 fits 2007–2016 Harley-Davidson FXST models, including 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, and 2016 applications.
For proper break-in of new pistons and rings, run the engine at moderate speeds for at least 500 miles and avoid excessive operation in lower gears. This piston set is supplied as a set. Manufacturer installation guidance is available through the referenced Keith Black Symmetrical-Asymmetrical Piston Installation Guide.
Features:
- Construction: Hypereutectic alloy cast in a permanent steel mold
- Oversize: .010 oversize for a 3.875-inch bore
- Compression Ratio: 9.3:1
- Heat Management: Low heat transfer helps keep the skirts cool and minimizes piston expansion
- Ring Placement: High compression ring placement is intended to reduce detonation and increase top ring temperature
- Application: Fits 2007–2016 Harley-Davidson FXST models
- Quantity: Supplied as a set
- Break-In Requirement: Run at moderate speeds for at least 500 miles and avoid excessive running in lower gears
Fitment:
Harley Davidson FLST 2007
Harley Davidson FLST 2008
Harley Davidson FLST 2009
Harley Davidson FLST 2010
Harley Davidson FLST 2011
Harley Davidson FLST 2012
Harley Davidson FLST 2013
Harley Davidson FLST 2014
Harley Davidson FLST 2015
Harley Davidson FLST 2016
Harley Davidson FLST 2017
Harley Davidson FLT 2007
Harley Davidson FLT 2008
Harley Davidson FLT 2009
Harley Davidson FLT 2010
Harley Davidson FLT 2011
Harley Davidson FLT 2012
Harley Davidson FLT 2013
Harley Davidson FLT 2014
Harley Davidson FLT 2015
Harley Davidson FLT 2016
Harley Davidson FXD 2007
Harley Davidson FXD 2008
Harley Davidson FXD 2009
Harley Davidson FXD 2010
Harley Davidson FXD 2011
Harley Davidson FXD 2012
Harley Davidson FXD 2013
Harley Davidson FXD 2014
Harley Davidson FXD 2015
Harley Davidson FXD 2016
Harley Davidson FXD 2017
Harley Davidson FXST 2007
Harley Davidson FXST 2008
Harley Davidson FXST 2009
Harley Davidson FXST 2010
Harley Davidson FXST 2011
Harley Davidson FXST 2012
Harley Davidson FXST 2013
Harley Davidson FXST 2014
Harley Davidson FXST 2015
Harley Davidson FXST 2016
Harley Davidson FXST 2017
| UOM: SET |
| Country Of Origin: MEXICO |
| Accessory Items: 16-0622 - Ring-O-Matic Ring Compressor Tool Kit 16-0075 - Wrist Pin Ring Tool 60-0167 |
