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Piston kit S4F07700035A High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 13.8:1
A dimension = 76.95 mm
Suitable for:
YAMAHA YZ250F 2019 2022
(forged piston)
Compression ratio: 13.8:1
A dimension = 76.95 mm
Suitable for:
YAMAHA YZ250F 2019 2022
Piston kit S4F07700035B High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 13.8:1
B dimension = 76.96 mm
Suitable for:
YAMAHA YZ250F 2019 2022
(forged piston)
Compression ratio: 13.8:1
B dimension = 76.96 mm
Suitable for:
YAMAHA YZ250F 2019 2022
Piston kit S4F07700018B High Compression High Compression Piston
For Athena cylinder kit and standard cylinders
Compression ratio: 14.1:1
A-dimension = 76.97 mm
Suitable for:
KAWASAKI KX250F 2007 2010
For Athena cylinder kit and standard cylinders
Compression ratio: 14.1:1
A-dimension = 76.97 mm
Suitable for:
KAWASAKI KX250F 2007 2010
Piston kit S4F07700018A High Compression High Compression Piston
For Athena cylinder kit and standard cylinders
Compression ratio: 14.1:1
A-dimension = 76.96 mm
Suitable for:
KAWASAKI KX250F 2007 2010
For Athena cylinder kit and standard cylinders
Compression ratio: 14.1:1
A-dimension = 76.96 mm
Suitable for:
KAWASAKI KX250F 2007 2010
Piston kit S4F07700024B High Compression High Compression Piston
For Athena cylinder kit and standard cylinders
Compression ratio: 14.5:1
B dimension = 76.97 mm
Suitable for:
KAWASAKI KX250F 2011 2014
For Athena cylinder kit and standard cylinders
Compression ratio: 14.5:1
B dimension = 76.97 mm
Suitable for:
KAWASAKI KX250F 2011 2014
Piston kit S4F07700010A High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
A dimension = 76.96 mm
Suitable for:
SUZUKI RM-Z250 2007 2009
(forged piston)
Compression ratio: 13.9:1
A dimension = 76.96 mm
Suitable for:
SUZUKI RM-Z250 2007 2009
Piston kit S4F07700010B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
B dimension = 76.97 mm
Suitable for:
SUZUKI RM-Z250 2007 2009
(forged piston)
Compression ratio: 13.9:1
B dimension = 76.97 mm
Suitable for:
SUZUKI RM-Z250 2007 2009
Piston kit S4F07700010C High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
C dimension = 76.98 mm
Suitable for:
SUZUKI RM-Z250 2007 2009
(forged piston)
Compression ratio: 13.9:1
C dimension = 76.98 mm
Suitable for:
SUZUKI RM-Z250 2007 2009
Piston kit S4F09700018A High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
A dimension = 96.96 mm
Suitable for:
YAMAHA YZ450F 2010 2013
(forged piston)
Compression ratio: 13.5:1
A dimension = 96.96 mm
Suitable for:
YAMAHA YZ450F 2010 2013
Piston kit S4F09700018B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
B dimension = 96.97 mm
Suitable for:
YAMAHA YZ450F 2010 2013
(forged piston)
Compression ratio: 13.5:1
B dimension = 96.97 mm
Suitable for:
YAMAHA YZ450F 2010 2013
Piston kit S4F09500025B (forged piston) High Compression Piston
For Athena cylinder kit and standard cylinders
Compression ratio: 13.5:1
B dimension = 94.95 mm
Suitable for:
YAMAHA WR450F 2003 2011
YAMAHA YZ450F 2003 2009
For Athena cylinder kit and standard cylinders
Compression ratio: 13.5:1
B dimension = 94.95 mm
Suitable for:
YAMAHA WR450F 2003 2011
YAMAHA YZ450F 2003 2009
Piston kit S4F09500025A (forged piston) High Compression Piston
For Athena cylinder kit and standard cylinders
Compression ratio: 13.5:1
A-dimension = 94.94 mm
Suitable for:
YAMAHA WR450F 2003 2011
YAMAHA YZ450F 2003 2009
For Athena cylinder kit and standard cylinders
Compression ratio: 13.5:1
A-dimension = 94.94 mm
Suitable for:
YAMAHA WR450F 2003 2011
YAMAHA YZ450F 2003 2009
Piston kit S4F07700020A High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 14:1
A dimension = 76.96 mm
Suitable for:
YAMAHA WR250F 2008 2012
YAMAHA YZ250F 2008 2013
(forged piston)
Compression ratio: 14:1
A dimension = 76.96 mm
Suitable for:
YAMAHA WR250F 2008 2012
YAMAHA YZ250F 2008 2013
Piston kit S4F07700020B High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 14:1
B dimension = 76.97 mm
Suitable for:
YAMAHA WR250F 2008 2012
YAMAHA YZ250F 2008 2013
(forged piston)
Compression ratio: 14:1
B dimension = 76.97 mm
Suitable for:
YAMAHA WR250F 2008 2012
YAMAHA YZ250F 2008 2013
Piston kit S4F09600013B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.2:1
B dimension = 95.97 mm
Suitable for:
SUZUKI RM-Z450 2008 2011
(forged piston)
Compression ratio: 13.2:1
B dimension = 95.97 mm
Suitable for:
SUZUKI RM-Z450 2008 2011
Piston kit S4F07700005A High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 13.5:1
A dimension = 76.96 mm
Suitable for:
YAMAHA WR250F 2005 2007
YAMAHA YZ250F 2005 2007
(forged piston)
Compression ratio: 13.5:1
A dimension = 76.96 mm
Suitable for:
YAMAHA WR250F 2005 2007
YAMAHA YZ250F 2005 2007
Piston kit S4F07700005B High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 13.5:1
B dimension = 76.97 mm
Suitable for:
YAMAHA WR250F 2005 2007
YAMAHA YZ250F 2005 2007
(forged piston)
Compression ratio: 13.5:1
B dimension = 76.97 mm
Suitable for:
YAMAHA WR250F 2005 2007
YAMAHA YZ250F 2005 2007
Piston kit S4F07700022A High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
A dimension = 76.95 mm
Suitable for:
SUZUKI RM-Z250 2010 2018
(forged piston)
Compression ratio: 13.9:1
A dimension = 76.95 mm
Suitable for:
SUZUKI RM-Z250 2010 2018
Piston kit S4F07700022B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
B dimension = 76.96 mm
Suitable for:
SUZUKI RM-Z250 2010 2018
(forged piston)
Compression ratio: 13.9:1
B dimension = 76.96 mm
Suitable for:
SUZUKI RM-Z250 2010 2018
Piston kit S4F07700005C High Compression High Compression Piston (2 Rings)
(forged piston)
Compression ratio: 13.5:1
C dimension = 76.98 mm
Suitable for:
YAMAHA WR250F 2005 2007
YAMAHA YZ250F 2005 2007
(forged piston)
Compression ratio: 13.5:1
C dimension = 76.98 mm
Suitable for:
YAMAHA WR250F 2005 2007
YAMAHA YZ250F 2005 2007
Piston kit S4F09700015A High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
A dimension = 96.96 mm
Suitable for:
KTM 450SX-F 2007 2012
(forged piston)
Compression ratio: 13.5:1
A dimension = 96.96 mm
Suitable for:
KTM 450SX-F 2007 2012
Piston kit S4F09700015B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
B dimension = 96.97 mm
Suitable for:
KTM 450SX-F 2007 2012
(forged piston)
Compression ratio: 13.5:1
B dimension = 96.97 mm
Suitable for:
KTM 450SX-F 2007 2012
Piston kit S4F07600006A High Compression High Compression Piston
(forged piston)
Compression ratio: 13:1
A dimension = 75.96 mm
Suitable for:
KTM 250EXC-F 2006 2013
KTM 250SX-F 2006 2012
(forged piston)
Compression ratio: 13:1
A dimension = 75.96 mm
Suitable for:
KTM 250EXC-F 2006 2013
KTM 250SX-F 2006 2012
Piston kit S4F07600006B High Compression High Compression Piston
(forged piston)
Compression ratio: 13:1
B dimension = 75.97 mm
Suitable for:
KTM 250EXC-F 2006 2013
KTM 250SX-F 2006 2012
(forged piston)
Compression ratio: 13:1
B dimension = 75.97 mm
Suitable for:
KTM 250EXC-F 2006 2013
KTM 250SX-F 2006 2012
Piston kit S4F09600018A High Compression High Compression Piston
For Athena cylinder kit and standard cylinders
(forged pistons)
Compression ratio: 13:1
A dimension = 95.96 mm
Suitable for:
KAWASAKI KX450F 2009 2014
KAWASAKI KX450F 2016 2018
For Athena cylinder kit and standard cylinders
(forged pistons)
Compression ratio: 13:1
A dimension = 95.96 mm
Suitable for:
KAWASAKI KX450F 2009 2014
KAWASAKI KX450F 2016 2018
Piston kit S4F09600018B High Compression High Compression Piston
For Athena cylinder kit and standard cylinders
(forged pistons)
Compression ratio: 13:1
B dimension = 95.97 mm
Suitable for:
KAWASAKI KX450F 2009 2014
KAWASAKI KX450F 2016 2018
For Athena cylinder kit and standard cylinders
(forged pistons)
Compression ratio: 13:1
B dimension = 95.97 mm
Suitable for:
KAWASAKI KX450F 2009 2014
KAWASAKI KX450F 2016 2018
Piston kit S4F09600016A High Compression High Compression Piston
(forged piston)
Compression ratio: 13:1
A-dimension, D=95.95 mm
Suitable for:
HONDA CRF450R 2009 2016
(forged piston)
Compression ratio: 13:1
A-dimension, D=95.95 mm
Suitable for:
HONDA CRF450R 2009 2016
Piston kit S4F09600016B High Compression High Compression Piston
(forged piston)
Compression ratio: 13:1
B dimension, D=95.96 mm
Suitable for:
HONDA CRF450R 2009 2016
(forged piston)
Compression ratio: 13:1
B dimension, D=95.96 mm
Suitable for:
HONDA CRF450R 2009 2016
Piston kit S4F09600010A High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
A-dimension, D=95.96 mm
Suitable for:
HONDA CRF450R 2002 2008
HONDA CRF450RX 2002 2008
(forged piston)
Compression ratio: 13.5:1
A-dimension, D=95.96 mm
Suitable for:
HONDA CRF450R 2002 2008
HONDA CRF450RX 2002 2008
Piston kit S4F09600010B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
B dimension, D=95.97 mm
Suitable for:
HONDA CRF450R 2002 2008
HONDA CRF450RX 2002 2008
(forged piston)
Compression ratio: 13.5:1
B dimension, D=95.97 mm
Suitable for:
HONDA CRF450R 2002 2008
HONDA CRF450RX 2002 2008
Piston kit S4F09600010C High Compression High Compression Piston
(forged piston)
Compression ratio: 13.5:1
C dimension, D=95.98 mm
Suitable for:
HONDA CRF450R 2002 2008
HONDA CRF450RX 2002 2008
(forged piston)
Compression ratio: 13.5:1
C dimension, D=95.98 mm
Suitable for:
HONDA CRF450R 2002 2008
HONDA CRF450RX 2002 2008
Piston kit S4F07800003B High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
B dimension, D=77.97 mm
Suitable for:
HONDA CRF250R 2004 2009
HONDA CRF250RX 2004 2009
(forged piston)
Compression ratio: 13.9:1
B dimension, D=77.97 mm
Suitable for:
HONDA CRF250R 2004 2009
HONDA CRF250RX 2004 2009
Piston kit S4F07800003C High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
C-dimension, D=77.98 mm
Suitable for:
HONDA CRF250R 2004 2009
HONDA CRF250RX 2004 2009
(forged piston)
Compression ratio: 13.9:1
C-dimension, D=77.98 mm
Suitable for:
HONDA CRF250R 2004 2009
HONDA CRF250RX 2004 2009
Piston kit S4F07800003A High Compression High Compression Piston
(forged piston)
Compression ratio: 13.9:1
A-dimension, D=77.96 mm
Suitable for:
HONDA CRF250R 2004 2009
HONDA CRF250RX 2004 2009
(forged piston)
Compression ratio: 13.9:1
A-dimension, D=77.96 mm
Suitable for:
HONDA CRF250R 2004 2009
HONDA CRF250RX 2004 2009
Piston kit S4F07680008B High Compression High Compression Piston
(forged piston)
Compression ratio: 14.2:1
B dimension, D=76.76 mm
Suitable for:
HONDA CRF250R 2010 2013
HONDA CRF250RX 2010 2011
(forged piston)
Compression ratio: 14.2:1
B dimension, D=76.76 mm
Suitable for:
HONDA CRF250R 2010 2013
HONDA CRF250RX 2010 2011
Piston kit S4F07680008A High Compression High Compression Piston
(forged piston)
Compression ratio: 14.2:1
A-dimension, D=76.75 mm
Suitable for:
HONDA CRF250R 2010 2013
HONDA CRF250RX 2010 2011
(forged piston)
Compression ratio: 14.2:1
A-dimension, D=76.75 mm
Suitable for:
HONDA CRF250R 2010 2013
HONDA CRF250RX 2010 2011
