- Add preload and effective rate to rear torsion springs to reduce excessive sag
- Help compensate for a heavy rider or additional gear such as fuel or tools
- Increase efficiency of rear torsion springs
- Allow for more accurate ride height setup
Yamaha -- Phazer 480 E -- (1988, 1985, 1994, 1984, 1990, 1993, 1986, 1997, 1995, 1996, 1989, 1991, 1992, 1998, 1987); Yamaha -- Phazer II 480 -- (1985, 1993, 1998, 1994, 1997, 1990, 1992, 1999, 1988, 1987, 1991, 1995, 1984, 1986, 1989, 1996); Yamaha -- Phazer II 480 LE -- (1984, 1986, 1991, 1992, 1995, 1988, 1987, 1989, 1994, 1990, 1985, 1993, 1996, 1997); Yamaha -- Phazer II 480 Mountain Lite -- (1993, 1994, 1995, 1998, 1996, 1999, 1997, 1992); Yamaha -- Phazer II 480 ST -- (1985, 1987, 1992, 1990, 1996, 1999, 1984, 1986, 1988, 1989, 1991, 1993, 1995, 1997, 1994, 1998); Yamaha -- Phazer 480 SS -- (1997, 1998); Yamaha -- Phazer 480 Deluxe -- (1984, 1985, 2001, 1987, 1988, 1986, 1989); Yamaha -- Phazer 500 FX -- (2010, 2007, 2008, 2011, 2009); Yamaha -- Phazer 500 GT -- (2013, 2016, 2011, 2015, 2014, 2008, 2012, 2007, 2009, 2010, 2017); Yamaha -- Phazer Mountain Lite 500 -- (2001, 2000, 2007, 1999); Yamaha -- Phazer 485 -- (1985, 1990, 1996, 1994, 2000, 1986, 1989, 1993, 1984, 1995, 1999, 1987, 1988, 1991, 1992, 1998, 2001, 1997); Yamaha -- PZ 480 R Phazer -- (1993, 1998, 1995, 1991, 1997, 1999, 1992, 1994, 1996); Yamaha -- PZ 480 S Phazer -- (1996, 1997, 1993, 1991, 1994, 1998, 1999, 1995, 1992); Yamaha -- PZ 480 T Phazer -- (1994, 1999, 1995, 1997, 1991, 1998, 1992, 1996, 1993); Yamaha -- Phazer 500 M-TX -- (1993, 1996, 2000, 2007, 1986, 1989, 1991, 1994, 2011, 2013, 2014, 1997, 2010, 1992, 2001, 2008, 2015, 1984, 1988, 2009, 1985, 1987, 1990, 1999, 2012, 2017, 1995, 1998, 2016); Yamaha -- Phazer -- (1987, 1999, 2013, 1998, 2011, 1985, 2000, 2008, 2015, 2017, 1989, 1994, 1995, 1991, 1992, 1993, 2001, 1996, 2009, 2014, 1984, 1986, 2007, 2010, 2016, 2018, 1988, 1990, 1997, 2012); Yamaha -- Phazer 500 Mountain Lite -- (1998, 2010, 2000, 2008, 1997, 2001, 2007, 2009, 1999); Yamaha -- Phazer 500 X-TX -- (2012, 2018, 2010, 2007, 2013, 2017, 2011, 2014, 2015, 2016, 2008, 2009); Yamaha -- Phazer 500 -- (2000, 2013, 1999, 2001, 2002, 2014, 2012, 2007, 2010, 2015, 2009, 2011, 2008); Yamaha -- Phazer 480 SS Electric -- (1997, 1998); Yamaha -- Phazer 480 -- (1995, 1990, 1993, 1994, 1984, 1991, 1998, 1987, 1996, 1986, 1988, 1989, 1992, 1997, 1985); Yamaha -- Phazer 500 R-TX -- (2010, 2013, 2012, 2017, 2008, 2016, 2009, 2007, 2011, 2014, 2015); Yamaha -- Phazer 480 Special Edition -- (1984); Yamaha -- Phazer 500 Deluxe -- (2000, 2001, 1999); Yamaha -- Phazer II 485 Mountain Lite -- (1996, 1997, 2000, 1998, 1999); Yamaha -- Phazer 480 Mountain -- (1999)