Progressive springs offer a soft initial spring rate for a plush ride. Progressively wound design provides increased resistance to bottoming as spring compresses. Improves handling while retaining OEM geometry. Made in the USA. Spacers are not included. They may easily be fabricated from aluminum or PVC pipe.This item fits the following vehicle applications:compatible with Honda ST1100 1991-2003compatible with Honda ST1100 ABS 1992-1995compatible with Honda VF750C Magna 1994-2003compatible with Honda VT1100C Shadow 1992-1996compatible with Honda VT1100C Shadow Spirit 1997-2007compatible with Honda VT1100C2 Shadow ACE 1995-1999compatible with Honda VT1100C2 Shadow Sabre 2000-2007compatible with Honda VT1100C3 Shadow Aero 1998-2002compatible with Honda VT1100T Shadow ACE Tour 1998-2001compatible with Honda VT750C/CD Shadow ACE 1998-2003compatible with Honda VT750DC Shadow Spirit 2005-2007compatible with Honda VT750DC Shadow Spirit 2001-2003compatible with Kawasaki VN1500C Vulcan L 1996-1997compatible with Kawasaki VN1500E Vulcan 1500 Classic 1996-2008compatible with Kawasaki VN1600A Vulcan 1600 Classic 2003-2007compatible with Kawasaki VN800A Vulcan 800 1995-2005compatible with Kawasaki VN800B Vulcan 800 Classic 1996-2005compatible with Suzuki C90 Boulevard 2005-2007compatible with Suzuki C90B Boulevard 2005-2007compatible with Suzuki C90T Boulevard 2005-2007compatible with Suzuki GSF400 Bandit 1991-1993compatible with Suzuki GSF600S Bandit 1996-1999compatible with Suzuki GSX-R1100 1986-1988compatible with Suzuki GSX1100F Katana 1989-1993compatible with Suzuki GSX600F Katana 1988-1996compatible with Suzuki GSX750F Katana 1989-1997compatible with Suzuki VL1500 Intruder 1998-2004compatible with Triumph Bonneville 2001-2014compatible with Triumph Bonneville SE 2009-2013compatible with Triumph Bonneville T100 2002-2012compatib