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Progressive Fork Spring Kit

(24 reviews)

Item: 324987

$98.58 – $229.00

Select Your Vehicle - Fitment Guaranteed

Progressive Fork Spring Kit


The original progressive rate fork springs soak up the small road bumps, yet are firm enough to absorb the teeth-rattling ones. Spring rates have been chosen to reduce front end "dive" during braking, yet still provide excellent ride comfort. Better yet, Progressive warranties their fork springs for life! Progressive rate fork springs have several advantages over straight rate springs. A progressive rate spring has the advantage of a rising rate resistance to compression. The benefit of this is that the spring can be soft enough at the start of the travel to offer a "plush" ride, yet be firm enough at the end of the travel to soak up the big bumps.

  • Progressive rate
  • High quality chrome silicon wire
  • Precision wound
  • Lifetime manufacturer's warranty
  • Sold in pairs
Specification Details
Fork Tube Diameter Varies (make selection above)
Position Varies (make selection above)
Quantity Varies (make selection above)
Spacer Length Varies (make selection above)
Spring Rate Varies (make selection above)
Stock Length Varies (make selection above)
Warranty Varies (make selection above)

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

BMW
  • F 650 1997-1999
  • F 650 CS 2001-2005
  • F 650 GS 1999-2007
  • F 650 ST 1997-1999
  • F 800 GS 2007-2012
  • K 1 1990-1993
  • K 100 1985-1986
  • K 100 LT 1987-1991
  • K 100 RS 1988-1991
  • K 100 RT 1984-1988
  • K 75 1986-1991
  • K 75 C 1986-1990
  • K 75 RT 1990-1991
  • K 75 S 1987-1991
  • K 75 T 1986
  • R 100 1979-1984
  • R 100 GS 1988-1995
  • R 100 RS 1988-1993
  • R 100 RT 1988-1995
  • R 65 1985-1987
  • R 75/5 1973
  • R 75/6 1974-1976
  • R 75/7 1977
  • R 80 1977-1987
  • R 80 G/S 1987
  • R 80 RT 1985-1987
  • R 80/7 1978-1981
  • R 90 S 1974-1976
  • R 90/6 1974-1976
Ducati
  • 860 GT 1975-1977
  • 900 GTS 1977-1979
  • 900 SS Desmo 1977-1979
Harley Davidson
  • FL 80 Electra Glide 1980
  • FL Duo Glide 1958-1964
  • FL Hydra Glide 1949-1957
  • FLB Electra Glide 1965-1969
  • FLDE Softail Deluxe 2018-2020
  • FLE Hydra Glide 1953-1956
  • FLEF Hydra Glide 1953-1956
  • FLF Duo Glide 1958-1964
  • FLF Hydra Glide 1952-1953, 1955-1957
  • FLFB Electra Glide 1965-1969
  • FLFB Softail Fat Boy 2018-2019
  • FLFBS Softail Fat Boy 114 2018-2024
  • FLH 80 Electra Glide Heritage 1981-1984
  • FLH Duo Glide 1958-1964
  • FLH Electra Glide 1970-1985
  • FLH Hydra Glide 1955-1957
  • FLHB Electra Glide 1965-1969
  • FLHC Electra Glide Classic 1981-1982
  • FLHC Softail Heritage Classic 2018-2021
  • FLHCS Softail Heritage Classic 114 2018-2024
  • FLHF Duo Glide 1958-1964
  • FLHF Electra Glide 1970-1972, 1974
  • FLHF Electra Glide Sport 1975
  • FLHF Hydra Glide 1955-1957
  • FLHFB Electra Glide Super Sport 1965-1969
  • FLHR Electra Glide Road King 1994
  • FLHR Road King 1995-2022
  • FLHRC Road King Classic 2007-2013
  • FLHRCI Road King Classic 1998-2001, 2006
  • FLHRI Road King 1996-2006
  • FLHRS Road King Custom 2004-2007
  • FLHRSI Road King Custom 2006
  • FLHRXS Road King Special 2017-2023
  • FLHS Electra Glide Sport 1977, 1981-1993
  • FLHT Electra Glide 1982-1984, 1986-1988
  • FLHT Electra Glide Standard 1995-2009, 2020-2022
  • FLHTC Electra Glide Classic 1983-2005, 2007-2013
  • FLHTC Liberty Electra Glide Classic Liberty 1986
  • FLHTCI Electra Glide Classic 1996-2006
  • FLHTCU Electra Glide Ultra Classic 2017-2019
  • FLHTCU Ultra Classic Electra Glide 1989-2016
  • FLHTCUI Ultra Classic Electra Glide 1995-2006
  • FLHTCUTG Tri Glide Ultra Classic 2009-2013
  • FLHTI Electra Glide Standard 2003-2006
  • FLHTK Electra Glide Ultra Limited 2010-2023
  • FLHTKL Electra Glide Ultra Limited Low 2017-2019
  • FLHX Electra Glide Special 1984-1985
  • FLHX Street Glide 2006-2023
  • FLHXI Street Glide 2006
  • FLHXS Street Glide Special 2014-2023
  • FLHXXX Street Glide Trike 2010-2011
  • FLS Softail Slim 2012-2017
  • FLSB Softail Sport Glide 2018-2021
  • FLSL Softail Slim 2018-2021
  • FLSS Softail Slim S 2016-2017
  • FLST Heritage Softail 1986-1990, 2006
  • FLSTC Heritage Softail Classic 1987-2017
  • FLSTCI Heritage Softail Classic 2001-2006
  • FLSTF Softail Fat Boy 1990-2017
  • FLSTFB Softail Fat Boy Lo 2010-2016
  • FLSTFBS Softail Fat Boy S 2016-2017
  • FLSTFI Softail Fat Boy 2001-2006
  • FLSTI Heritage Softail 2006
  • FLSTN Heritage Softail Nostalgia 1993
  • FLSTN Softail Deluxe 2005-2017
  • FLSTNI Softail Deluxe 2005-2006
  • FLSTSB Softail Cross Bones 2008-2011
  • FLT Tour Glide 1980-1984
  • FLTC Tour Glide Classic 1980-1991
  • FLTCU Ultra Classic Tour Glide 1989-1995
  • FLTCUI Ultra Classic Tour Glide 1996
  • FLTD Tour Glide 1983
  • FLTR Road Glide 1998-2004, 2007-2009
  • FLTRI Road Glide 1998-2006
  • FLTRK Road Glide Limited 2020-2023
  • FLTRU Road Glide Ultra 2011-2013, 2016-2019
  • FLTRX Road Glide 2015-2023
  • FLTRX Road Glide Custom 2010-2013
  • FLTRXS Road Glide Special 2015-2023
  • FX 1200 Super Glide 1971-1978
  • FXBB Softail Street Bob 2018-2020
  • FXBBS Softail Street Bob 114 2021-2024
  • FXBR Softail Breakout 2018-2019
  • FXBRS Softail Breakout 114 2018-2020
  • FXCW Softail Rocker 2008-2009
  • FXCWC Softail Rocker C 2008-2011
  • FXD Dyna Super Glide 1995-2005, 2007-2010
  • FXDB Dyna Daytona 1992
  • FXDB Dyna Street Bob 2007-2017
  • FXDB Dyna Sturgis 1991
  • FXDBI Dyna Street Bob 2006
  • FXDC Dyna Glide Custom 1992
  • FXDC Dyna Super Glide Custom 2005, 2007-2014
  • FXDCI Dyna Super Glide Custom 2005-2006
  • FXDF Dyna Fat Bob 2008-2017
  • FXDG Disc Glide 1983
  • FXDI Dyna Super Glide 2004-2006
  • FXDI35 35th Anniversary Dyna Super Glide 2006
  • FXDL Dyna Low Rider 1993-2005, 2007-2009, 2014-2017
  • FXDLI Dyna Low Rider 2004-2006
  • FXDLS Dyna Low Rider S 2016-2017
  • FXDS-CONV Dyna Convertible 1994-2000
  • FXDWG Dyna Wide Glide 1993-2005, 2007-2008, 2010-2017
  • FXDWGI Dyna Wide Glide 2004-2006
  • FXDX Dyna Super Glide Sport 1999-2005
  • FXDXI Dyna Super Glide Sport 2004-2005
  • FXDXT Dyna Super Glide T-Sport 2001-2003
  • FXEF Super Glide Fat Bob 1979-1980, 1985
  • FXFB Softail Fat Bob 2018-2019
  • FXFBS Softail Fat Bob 114 2018-2023
  • FXLR Low Rider Custom 1987-1994
  • FXLR Softail Low Rider 2018-2020
  • FXLRS Softail Low Rider S 2020-2024
  • FXR Super Glide 1986-1994
  • FXR Super Glide II 1982-1983
  • FXRDG Disc Glide 1984
  • FXRS Low Glide 1982-1992
  • FXRS Super Glide II 1982-1983
  • FXRS-CONV Low Rider Convertible 1989-1993
  • FXRS-SP Low Rider Sport Edition 1987-1993
  • FXRT Sport Glide 1983-1992
  • FXS Softail Blackline 2011-2013
  • FXS Super Glide Low Rider 1977-1979, 1981-1982
  • FXSB Low Rider 1984-1985
  • FXSB Softail Breakout 2013-2017
  • FXST Softail 1984-1990
  • FXST Softail Standard 1999-2009
  • FXSTB Softail Night Train 1999-2009
  • FXSTBI Softail Night Train 2001-2006
  • FXSTC Softail Custom 1986-1999, 2007-2010
  • FXSTD Softail Deuce 2000-2007
  • FXSTDI Softail Deuce 2001-2006
  • FXSTI Softail Standard 2001-2006
  • FXWG Wide Glide 1980-1986
  • K Sportster 1953
  • KH Sportster 1954-1957
  • KHK Sportster 1954-1956
  • KK Sportster 1953
  • SL Sportster 1959
  • SLH Sportster 1959
  • VRSCA V-Rod 2002-2006
  • VRSCAW V-Rod 2007-2010
  • VRSCB V-Rod 2005
  • VRSCD V-Rod Night Rod 2006-2008
  • VRSCDX V-Rod Night Rod Special 2007-2017
  • VRSCF V-Rod Muscle 2009-2017
  • VRSCX V-Rod 2007
  • XG500 Street 500 2015-2020
  • XG750 Street 750 2015-2020
  • XL1200C Sportster 1200 Custom 1996-2019
  • XL1200L Sportster 1200 Low 2006-2011
  • XL1200N Sportster 1200 Nightster 2007-2012
  • XL1200NS Sportster 1200 Iron 2018-2021
  • XL1200R Sportster 1200 Roadster 2004-2008
  • XL1200S Sportster 1200 Sport 1996-2003
  • XL1200T Sportster SuperLow 2014-2018
  • XL1200V Sportster Seventy-Two 2012-2016
  • XL1200X Sportster Forty-Eight 2010-2022
  • XL1200XS Sportster Forty-Eight Special 2018-2019
  • XL50 50th Anniversary Sportster 2007
  • XL883 Sportster 883 2004-2009
  • XL883C Sportster 883 Custom 1998-2010
  • XL883L Sportster 883 Low 2005-2010
  • XL883L Sportster SuperLow 2011-2019
  • XL883N Sportster Iron 883 2009-2022
  • XL883R Sportster 883R 2006-2010
  • XL883R Sportster Roadster 2011-2015
  • XLCH Sportster 1958-1969
  • XLCH1000 Sportster 1000 1970-1980
  • XLCH900 Sportster 900 1965-1971
  • XLCR1000 Sportster Cafe Racer 1977-1978
  • XLH Sportster 1958, 1960-1969, 1979-1980, 1982-1983
  • XLH1000 Sportster Standard 1970-1978
  • XLH1100 Sportster 1100 1986-1987
  • XLH1200 Sportster 1200 1988-2003
  • XLH883 Sportster 883 1986-2003
  • XLH883DLX Sportster 883 Deluxe 1986-1995
  • XLH883HUG Sportster 883 Hugger 1987-2003
  • XLH900 Sportster 900 1970-1971
  • XLS1000 Sportster Roadster 1979-1985
  • XLT1000 Sportster Touring 1980
  • XLX1000 Sportster 1000 1983-1985
  • XR1000 1983-1984
Honda
  • ATC250R 1981-1982, 1985-1986
  • CB1000 1994-1995
  • CB1000C Custom 1983
  • CB1100F Super Sport 1983
  • CB400F CB-1 1989-1990
  • CB550F Super Sport 550 Four 1975-1977
  • CB550K 550 Four 1975-1978
  • CB650 1979-1982
  • CB650C 650 Custom 1980-1981
  • CB650SC Nighthawk 650 1983-1985
  • CB750 Nighthawk 750 1991-1993, 1995-2003
  • CB750A Hondamatic 1976-1978
  • CB750C 750 Custom 1980-1982
  • CB750F 750 Super Sport 1975-1980
  • CB750K 750 Four 1969-1982
  • CB900F 900 Super Sport 1981-1982
  • CB900F 919 2002-2005
  • CBR1000F 1988, 1990-1991, 1993-1996
  • CBR1000F Hurricane 1987
  • CBR600 F2 1991-1993
  • CBR600F 1989-1990
  • CBR600F Hurricane 1987-1988
  • CBX Super Sport 1979-1982
  • CR125R 1984-1989
  • CR250R 2-Stroke 1984-1988
  • CR250R Elsinore 1983
  • CR480R 1983
  • CR500R 1984-1988
  • CX500 1978-1979
  • CX500C Custom 1980-1982
  • GL1100 Gold Wing 1980-1983
  • GL1100A Gold Wing Aspencade 1982-1983
  • GL1100I Gold Wing Interstate 1980-1983
  • GL1200 Gold Wing 1984-1987
  • GL1200A Gold Wing Aspencade 1984-1987
  • GL1200I Gold Wing Interstate 1984-1987
  • GL1200L Gold Wing Limited Edition 1985-1986
  • GL1200SE-I Gold Wing Aspencade 1986
  • GL1500 Gold Wing 1988-2000
  • GL1500A Gold Wing Aspencade 1991-2000
  • GL1500C Valkyrie 1997-2003
  • GL1500CD Valkyrie Deluxe 2001-2003
  • GL1500CF Valkyrie Interstate 1999-2001
  • GL1500CT Valkyrie Tourer 1997-2001
  • GL1500I Gold Wing Interstate 1991-1997
  • GL1500SE Gold Wing SE 1990-2000
  • GL1800 Gold Wing 2001-2010, 2012-2017
  • GL1800 Gold Wing SE 2003-2004
  • GL1800A Gold Wing 2001-2010, 2012-2016
  • GL1800A Gold Wing SE 2001-2006
  • GL500 Silver Wing 1981-1982
  • GL500I Silver Wing Interstate 1981-1982
  • NT650 Hawk GT 1988-1991
  • NX125 Transcity 1988-1990
  • NX650 Dominator 1988-1989
  • PC800 Pacific Coast 1989-1990, 1994-1998
  • ST1100 Pan-European 1991-2002
  • ST1100A Pan-European ABS 1992-1995
  • TLR200 Reflex 1986-1987
  • VF1000F Interceptor 1984
  • VF1000R 1985
  • VF1100C V65 Magna 1983-1986
  • VF1100S V65 Sabre 1984-1985
  • VF500C V30 Magna 1984-1985
  • VF700C V40 Magna 1985-1987
  • VF700F Interceptor 1984-1985
  • VF750C V45 Magna 1988, 1994-2003
  • VF750C2 V45 Magna Deluxe 1997-2000
  • VF750CD V45 Magna Deluxe 1995-1996
  • VF750F V45 Interceptor 1983
  • VFR700F Interceptor 1986
  • VFR700F2 Interceptor 1986-1987
  • VFR750F Interceptor 1986, 1990-1992
  • VT1100C Shadow 1100 1985-1996
  • VT1100C Shadow 1100 Spirit 1997-2007
  • VT1100C2 Shadow 1100 A.C.E. 1995-1999
  • VT1100C2 Shadow 1100 Sabre 2000-2007
  • VT1100C3 Shadow 1100 Aero 1998-2002
  • VT1100CS Shadow 1100 A.C.E. 1998
  • VT1100D2 Shadow 1100 A.C.E. 1999
  • VT500C Shadow 500 1983-1984
  • VT500FT Ascot Twin 1983-1984
  • VT600C Shadow 600 VLX 1988-1989, 1991-2007
  • VT600CD Shadow 600 VLX Deluxe 1993-2007
  • VT600CD2 Shadow 600 VLX Deluxe 1999-2000
  • VT700C Shadow 700 1984-1987
  • VT750C Shadow 750 1983
  • VT750C Shadow 750 Aero 2004-2009
  • VT750CA Shadow 750 Aero ABS 2004-2009
  • VT750CD Shadow 750 A.C.E. 1998-2003
  • VT750DC Shadow 750 Spirit 2001-2003, 2005-2007
  • VT800C Shadow 800 1988
  • VTX1300C 2003-2009
  • VTX1300R 2005-2009
  • VTX1300S 2003-2007
  • VTX1300T 2008-2009
  • VTX1800C 2002-2007
  • VTX1800F 2005-2008
  • VTX1800N 2004-2008
  • VTX1800R 2002-2007
  • VTX1800S 2002-2006
  • VTX1800T 2007-2008
  • XL250R 1984-1987
  • XL350R 1984-1985
  • XL500S 1979-1981
  • XL600R 1983-1987
  • XL600V Transalp 1989-1990
  • XR500 1979-1980
  • XR650L 1993-2009, 2012-2021
Indian
  • FTR 1200 2019-2020
  • FTR 1200 Rally 2020
  • FTR 1200 S 2019
  • Scout 2015-2017
  • Scout Sixty 2016-2019
Kawasaki
  • Concours 1000 1986-2006
  • Eliminator 600 1986-1987
  • GPz 550 1981-1986
  • GPz 750 1982-1984
  • KDX200 1986-1992
  • KLR600 1985-1986
  • KLR650 1987-2015
  • KX125 1983-1987
  • KX250 2-Stroke 1982-1987
  • KX500 1985-1988
  • KZ1000A 1977-1978
  • KZ1000A MKII 1979-1980
  • KZ1000B 1000 LTD 1977-1980
  • KZ1000D Z1R 1978, 1980
  • KZ1300A Standard 1979-1982
  • KZ1300B Touring 1980
  • KZ550A Standard 1980-1983
  • KZ550C LTD 1980-1983
  • KZ550F Spectre 1983
  • KZ650B 1977-1979
  • KZ650D SR 1978-1979
  • KZ650H CSR 1982-1983
  • KZ750B LTD Twin 1976-1979
  • KZ750E Standard-4 1980-1982
  • KZ750G LTD Twin 1980
  • KZ750H LTD-4 1980-1983
  • KZ900A 1976-1977
  • Ninja 1000 1986-1987
  • Ninja 250R 1986-1990, 1992-2012
  • Ninja 300 2013-2015
  • Ninja 300 ABS 2013-2015
  • Ninja 500R 1994-2009
  • Ninja 600R 1985-1993
  • Ninja 750R 1987-1990
  • Ninja ZX-10 1988-1990
  • Ninja ZX-11 1990-2001
  • Ninja ZX-6 1990-1994
  • Ninja ZX-7 1989-1990
  • Voyager 1300 1983-1988
  • Voyager XII 1986-2003
  • Vulcan 1500 1996-1999
  • Vulcan 1500 Classic 1996-2004, 2006
  • Vulcan 1500 Classic Fi 2000-2008
  • Vulcan 1500 Drifter 1999-2005
  • Vulcan 1500 L 1996-1997
  • Vulcan 1500 Nomad 1999-2001
  • Vulcan 1500 Nomad Fi 2000-2004
  • Vulcan 1600 Classic 2003-2008
  • Vulcan 1600 Mean Streak 2006
  • Vulcan 1600 Nomad 2005-2008
  • Vulcan 700 1985
  • Vulcan 750 1986-2006
  • Vulcan 800 1995-2005
  • Vulcan 800 Classic 1996-2005
  • Vulcan 800 Drifter 2006
  • Vulcan 88 1987-1995
  • Vulcan 88 SE 1987-1990
  • Vulcan 900 Classic 2006-2014
  • Vulcan 900 Classic LT 2006-2011
  • Vulcan 900 Custom 2007-2011
  • W650 2000-2002
  • Z1 900 Super Four 1973-1975
  • Zephyr 1100 1992-1995
  • Zephyr 550 1990-1993
  • Zephyr 750 1991-1993
Suzuki
  • Bandit 400 1991-1993
  • Bandit 600 S 1996-2003
  • Boulevard C90 2005-2009
  • Boulevard S50 2005-2009
  • Boulevard S83 2005-2009
  • DR650S 1990-1993
  • DR650SE 1996-2014
  • GR650 Tempter 1983
  • GR650X Tempter 1983
  • GS1000 1978-1979
  • GS1100G 1982-1983
  • GS1100GK 1982-1984
  • GS400 1977-1978
  • GS400X 1977-1978
  • GS425 1979
  • GS450E 1980-1983
  • GS500E 1989-2000
  • GS550 1977-1981
  • GS550E 1983-1986
  • GS550ES 1983-1986
  • GS650E 1981
  • GS650G 1981-1983
  • GS650GL 1981-1983
  • GS750E 1980-1982
  • GS750L 1979-1981
  • GSX-R750 1986-1990
  • GSX1100F Katana 1100 1988-1993
  • GSX600F Katana 600 1988-1996, 1998-2006
  • GSX750F Katana 750 1989-2006
  • GT750 LeMans 1973-1977
  • Intruder 1400 1987-2004
  • Intruder 1500 1998-2004
  • Intruder 700 1986-1987
  • Intruder 750 1988-1991
  • Intruder 800 1992-2004
  • RG500 Gamma 1986-1987
  • RM125 1984-1988
  • RM250 1983-1987
  • RM500 1983-1984
  • SV650 1999-2005
  • SV650S 1999-2002
  • V-Strom 1000 2002-2009, 2012
  • V-Strom 650 2004-2009
  • V-Strom 650 ABS 2007-2009, 2011
  • VX800 1990-1993
Triumph
  • America 2002-2016
  • Bonneville 2014
  • Bonneville SE 2001-2013
  • Bonneville T100 2002-2017, 2021
  • Bonneville T120 1970-1972, 2016-2021
  • Rocket III 2004-2010
  • Rocket III Classic 2005-2009
  • Rocket III Classic Tourer 2006-2007
  • Rocket III Roadster 2006-2016
  • Rocket III Touring 2006-2017
  • Scrambler 2006-2017
  • Speed Twin 2019-2020
  • Speedmaster 2003-2017
  • Street Scrambler 2017-2019
  • Street Twin 2016-2019
  • Thruxton 2004-2016
  • Thruxton 1200 2016
  • Tiger 955i 2001-2002
Yamaha
  • FJ1100 1984-1985
  • FJ1200 1986-1987, 1989-1992
  • FJ1200A ABS 1992-1993
  • FJ600 1984-1985
  • FZ600 1986-1988
  • FZ700 1987
  • FZ750 1986, 1988
  • FZR1000 1987-1990
  • FZR400 1988-1990
  • FZR600 1989
  • FZR600R 1990-1998
  • FZR750R 1987-1988
  • IT200 1984-1986
  • IT250 1983
  • IT490 1983-1984
  • RD400 1976-1979
  • RZ350 1984-1985
  • RZ500 1985
  • Road Star 1600 1999-2003
  • Road Star 1600 Silverado 1999-2003
  • Road Star 1700 2004-2009
  • Road Star 1700 S 2008-2012
  • Road Star 1700 Silverado 2004-2010
  • Road Star 1700 Silverado S 2008-2012
  • Roadliner 2006-2009
  • Roadliner S 2006-2010, 2012-2014
  • Royal Star 1996-2001
  • Royal Star Cheyenne 1996-1998
  • Royal Star Tour Classic 1996-2000
  • Royal Star Tour Deluxe 1997-2001, 2005-2009
  • Royal Star Tour Deluxe S 2008-2010
  • SR500 1977-1981
  • SRX250 1987
  • Stratoliner 2006-2007, 2009-2012, 2014
  • Stratoliner S 2006-2010, 2012-2014
  • Stryker 2011-2012
  • TT500 1976-1981
  • V-Star 1100 1999
  • V-Star 1100 Classic 2000-2009
  • V-Star 1100 Custom 2000-2009
  • V-Star 1100 Silverado 2006
  • V-Star 1300 2007-2009, 2011-2012
  • V-Star 1300 Tourer 2007-2012
  • V-Star 650 Classic 1998-2010
  • V-Star 650 Custom 1998-2010
  • V-Star 650 Silverado 2003-2010
  • V-Star 950 2009-2015
  • V-Star 950 Tourer 2009-2015
  • VMX1200 VMAX 1985-1986, 1988-2007
  • XJ550 Maxim 1981-1983
  • XJ550R Seca 1981-1983
  • XJ600S Seca II 1992-1998
  • XJ650 Maxim 1980-1983
  • XJ650L Midnight Maxim 1981-1983
  • XJ650L Turbo Seca 1982-1983
  • XJ650R Seca 1982
  • XJ700X Maxim X 1985-1986
  • XJ750R Seca 1981-1983
  • XS650-2 Special II 1978-1979
  • XS650S Heritage Special 1981-1983
  • XS650S Special 1979-1983
  • XT600E 1990-1995
  • XV1000 Virago 1000 1984-1985
  • XV1100 Virago 1100 1986-1999
  • XV1100S Virago 1100 Special 1996-1998
  • XV535 Virago 535 1987-1988, 1990, 1993-2000
  • XV535S Virago 535 Special 1994-1998
  • XV700 Virago 700 1984-1985
  • XV700C Virago 700 1986-1987
  • XV700S Virago 700 1986
  • XV750 Virago 750 1988-1997
  • XVZ1200 Venture Royale 1983-1985
  • XVZ1300D Venture Royale 1986-1993
  • XZ550R Vision 1982-1983
  • YTZ250 Tri-Z 1986
  • YX600 Radian 1986-1990
  • YZ125 1984-1988
  • YZ250 2-Stroke 1983-1988
  • YZ465 1981
  • YZ490 1982-1990

Customer Reviews

Write Review

What a difference

By   on  Verified Purchaser

What a difference, should have done this before, ride height is spot on.


Quality

By   on  Verified Purchaser

Progressive suspension, highest quality parts.


Great

By   on  Verified Purchaser

Great overall.


Fork springs

By   on 

Rides great now.


Ride great

By   on  Verified Purchaser

They ride great like a new bike.


Gentleman's Sport Bike

By   on  Verified Purchaser

Handles solidly with better control on straight and curves. Used to ride a 1978 DUCATI 900SS, turned 68 yesterday. Made the BMW into a gentleman's Sport Bike, made it my own. Progressive Springs helped enormously! 1994 BMW R100RT Naked


Thank you

By   on  Verified Purchaser

My bike rides so much better.


Progressive Fork Springs

By   on  Verified Purchaser

I wish I would have ordered them a year ago.


Thank you very much

By   on  Verified Purchaser

Everything worked out real well I just didn't realize how bad my front springs were. Just wish I would've done it two years ago.


Recommend

By   on  Verified Purchaser

Used these in a rebuild. The difference in these and the original springs, which admittedly I think the ATF was original, is night and day. Recommend highly.


New Springs on 2000 Yamaha Vstar 1100

By   on  Verified Purchaser

Just replaced the original springs as part of a full fork rebuild and front tire and it handles like a different bike. I can't compare to original suspension because I believe seals were bad when I bought the bike, resulting in an unusually rough ride. Feels much safer and steady now. The tire was almost 20 years old so that could have been partly responsible for the previously rough ride.


Happy customer!

By   on  Verified Purchaser

Original ones 33 yrs old, weak rebound! New progressive, rebound restored and no air needed. Very happy Goldwing owner!


Spring review

By   on  Verified Purchaser

Installed these on my wife’s 883 iron. To be honest anything would be better than those stock springs. These springs stiffened up the front end and made the ride better. For $100 you can’t beat the upgrade.


Progressive springs

By   on  Verified Purchaser

Easy to install & works well.


Progressive VTX Springs

By   on  Verified Purchaser

Just what I was looking for, a whole lot better ride. Thanks.


Great stuff

By   on  Verified Purchaser

Perfect fit.


VTX 1300s

By   on  Verified Purchaser

I bought these for a 2006 VTX 1300 S and they work awesome. no more lazy front end. Highly recommended.


Nice ride again

By   on  Verified Purchaser

My VTX1300C didn't take bumps at all. Always bottoming out so I purchased these spring's and installed them one afternoon. They made all the difference in the world. No more bottoming out. Rides so much better! Great product and a great price. Thanks a lot.


Progressive Fork Spring Kit

By   on  Verified Purchaser

Sorry, I don't have the bike finished yet, but looks like a very good product.


Progressive Fork Springs

By   on  Verified Purchaser

They fit and work really well and the bike rides really well


06 heritage classic front fork springs

By   on  Verified Purchaser

Mechanic said these were good fork springs and the ride was great


Progressive front fork springs for Gen 1 KLR 650

By   on  Verified Purchaser

Parts Giant got the progressive fork springs to me super quick and customer service was friendly and followed up right away with a question I had. I’m pleased with the progressive springs ride improvement however for my Gen 1 KLR the spacer material was not included although it was called a kit. No huge deal to make my own but had to stop the install and resource spacer material. Quality otherwise was great.


Progressive springs on Honda CBX

By   on 

The front end firmed right up, bike rides nice and smooth again.


Progressive Fork Springs

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Easy installation with great instructions included. Probably took me 60 minutes to do put fork legs. My original front fork springs were drooping and totally lost their original rebound. I got these springs, put in new 20w fork oil and everything is operating normal again Greatly improved the ride and rebound of these forks. I highly recommend.


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Questions & Answers

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Does the come with basic install instructions like how to cut the spacers, direction of the washers and springs during install?

Yes, the kit would include detailed installation instructions showing how long to cut the spacers as well as spring and washer direction.

By Andy
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I have a 2018 Harley Breakout FXBR 107, how long do I cut the spacer ? and how much fork oil will I need on each?

In the kit, there will be instructions on how long to cut the spacer as well as how much fork oil will be needed.

By Andy
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do the springs come with spacers and washers its not shown in pic?

Yes, that's correct - for most machines, Progressive includes the requisite washers and spacers required to complete the fork spring installation on any machine you select from our fit guide. In rare cases, you will be required to re-use the OEM spacers and washers. Basically, if you're servicing forks that are completely stock, you'll have everything you need to improve the front end on your bike.

By Staff
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for preload cut size for 2001 sportster 1200 custom how long would you recommend?

For maximum performance we highly recommend that the forks be removed thoroughly cleaned, inspected and new fork oil installed with seals. The recommend spacer length from the installation instructions for this model is 2". The longer the spacer the more preload it will add to the spring and vise versa. As far as installation, you can complete this without full disassembly of the forks. All you need to do is remove the top cap and remove the stock spring.The damper tube assembly does not need to be removed to complete this install. You can drain the fork oil through the drain bolt on the lower leg. Follow the instructions for fork oil height and viscosity, it is normally different than the stock HD specs and can depend on your riding style. You can fine tune the damping with different weight oil. Higher number oil for more damping. You would then cut the provided PVC pipe to length to create the desired preload and install the spring taper side down then the spacer followed by the sealing ring and fork cap.

By Staff
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Is the fork spring kit for a 2002 honda vtx 1800c compatible with the 12 inch 412 model heavy-duty shocks for the same motorcycle ?

Yes, this would be an excellent match for the VTX1800C since, in the case of that machine, Progressive didn't see fit to make a heavy-duty fork spring kit for that bike. All you'll need to do when installing the fork springs is cut the included preload spacer tubes to the recommended length as indicated in the instructions. You'll find that, with the front and rear suspension updated with these parts, the bike will ride much better than stock and will feel sure-footed in the corners.

By Staff
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1996 kawasaki vulcan 800, i weigh 175lbs. I would like the front forks stiffer during braking. will these progressive springs help with that? bike only has 10,000 miles on it.

It's precisely during braking that you'll notice an improvement on the front. The progressive-rate springs do an excellent job of firming up as they're compressed. So, for big bumps or braking, they're just the ticket. I'm sure you'll find the springs to be a significant improvement over stock and at your weight, they're perfect for your needs.

By Staff
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I just bought a 2003 Honda VTX 1800 in pristine condition. Like to get more front and rear suspenion travel. I weigh 240. Any sugestions??

Ride mostly solo. Thanks for any feed back. Larry

It sounds like you're looking for suspension that's going to resist bottoming, versus wanting to raise the bike up for additional leg room at stops. In that case, as opposed to taller forks and shocks (a bespoke setup for the front, at the least), all you really need to do is match spring rate to your particular weight. For a 240lbs, rider, Progressive recommends heavy-duty rated springs. Heavy-duty springs really don't make for longer suspension travel, but are significantly more resistant to bottoming, especially when compared to the stock components with a rider at the upper end of of their design criteria (such as yourself). You'll find that the bike handles better in corners as it won't wallow nearly as much, and bigger bumps that would end with a thump taken care of with little notice. If that sounds like the problems you're encountering, you'll need the fork springs associated with your original question and a set of Progressive Heavy-Duty Shocks. While the fork springs themselves aren't offered in a heavy-duty rate for VTX1800 models, the rising rate spring design (resistance becomes greater the more they're compressed) will certainly be a significant improvement over the stock fork springs. And with the heavy-duty shock (choose the longer length), the rear end of the bike will be well sorted as well.

By Staff
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Do they replace the need for air?

With these springs ....do they require air to be added or do they replace the need for air

These springs don't change the way the fork operates, mechanically - they only replace the stock fork springs to improve the ride. If your machine is equipped with forks that are air-adjustable, you will still need to add air to them in order for everything to function properly. To replace the air system within the forks would require a complete Progressive Suspension fork cartridge kit. With that kit, you get everything you need to completely eliminate the air system on your bike, albeit, they're not available for nearly as many bikes as the fork spring kit.

By Staff
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What's the difference in GL800 A and GL1800 Gold Wing?

I want to order Progressive fork springs for my 2010 GL1800 Gold Wing

The only real difference between the two bikes is that the GL1800A is ABS-equipped while the GL1800 uses standard brakes. Both bikes actually share the same front fork tubes, so regardless which model you choose, you'll get the correct front fork springs to fit your bike.

By Staff
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is this standard spring or heavy duty

These springs are of the standard rate. We also have Progressive Heavy Duty Fork Spring Kits available on our website. For reference, Progressive Suspension recommends that heavy-duty springs be used for riders who weight more than 220 lbs., or for those that ride two-up and/or with a full load of luggage at least 50% of the time.

By Staff
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Will this fit a long wheel base 1973 bmw R75/5?

The BMW R75/5 front forks are identical between the two versions of the R 75/5. In fact, we just had one of each through the garage recently and the only difference we could find, other than the frame itself, is the seat on the long wheel base version is about an inch or so longer. That was it; engine, suspension &etc. were all identical. You should have no problem fitting these BMW R75/G fork springs to your machine.

By Staff
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Which is better on '09 Nightster Progressive fork spring replacement, standard or heavy-duty?

Spring rate; standard -vs- heavy-duty, really depends on your weight more than the type of riding you do. If you're less than 220lbs and spend most of your time riding solo, then you should go for the standard rate Sportster Nightster Progressive fork springs. Should you weigh more than that, or you find yourself riding two-up at least 50% of the time, it's recommended that you opt for the heavy-duty fork springs.

By Staff
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