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Progressive Suspension Heavy-Duty Rear Springs for 12/412 Series Shocks

by Progressive Suspension
Progressive Suspension Heavy-Duty Rear Springs for 12/412 Series Shocks
Available Colors

Item Description

Progressive Suspension Heavy-Duty Rear Springs for 12/412 Series Shocks

Coil-Over Spring Inside Diameter (in): 1.850 in.
Coil-Over Spring Inside Diameter (mm): 46.99mm
Coil-Over Spring Length (in): 9.370 in.
Coil-Over Spring Length (mm): 237.98mm
Progressive Rate Spring: Yes
Coil-Over Spring Rate (lbs/in): 90/130 lbs./in.

Do you hit the trails with passion, or have you taken one too many bumps? Are you in need of replacing your 12/412 Series springs? Let Progressive Suspension's progressive rate springs for 12/412 Series shocks put the safety and comfort back into riding. These progressive rate springs are built with quality and precise engineering to easily and effectively replace the springs on your 12/412 Series shocks. The springs utilize a progressively wound design that allows them to soak up small bumps, while absorbing the big ones. They will instinctively bring back the firmness and bump-absorbing action that you've lost. Don't go on another ride without your newly installed Progressive Suspension progressive rate springs for 12/412 Series shocks!

Bike Fitments:
1958-1964 Harley Davidson FL
1958-1964 Harley Davidson FLF
1965-1969 Harley Davidson FLFB
1958-1985 Harley Davidson FLH Electra Glide
1965-1969 Harley Davidson FLHB
1979-1981 Harley Davidson FLHC Electra Glide Classic
1958-1972 Harley Davidson FLHF
1965-1969 Harley Davidson FLHFB
1994-2005 Harley Davidson FLHR Road King
1998-2005 Harley Davidson FLHRCI Road King Classic
1996-2005 Harley Davidson FLHRI Road King
2004-2005 Harley Davidson FLHRS Road King Custom
2004-2005 Harley Davidson FLHRSI Road King Custom
1980-1993 Harley Davidson FLHS Electra Glide Sport
1986-2005 Harley Davidson FLHT Electra Glide Standard
1983-2005 Harley Davidson FLHTC Electra Glide Classic
1996-2005 Harley Davidson FLHTCI Electra Glide Classic
1989-1997 Harley Davidson FLHTCU Electra Glide Ultra Classic
1995-2005 Harley Davidson FLHTCUI Electra Glide Ultra Classic
2003-2005 Harley Davidson FLHTI Electra Glide Standard
1984-1985 Harley Davidson FLHX Electra Glide Special
1980-1983 Harley Davidson FLT Tour Glide
1981-1991 Harley Davidson FLTC Tour Glide Classic
1989-1995 Harley Davidson FLTCU Tour Glide Ultra Classic
1996 Harley Davidson FLTCUI Tour Glide Ultra Classic
1998-2002 Harley Davidson FLTR Road Glide
1998-2005 Harley Davidson FLTRI Road Glide
1971-1978 Harley Davidson FX Super Glide
1980-1982 Harley Davidson FXB Sturgis
1983 Harley Davidson FXDG Disc Glide
1974-1984 Harley Davidson FXE Super Glide
1979-1985 Harley Davidson FXEF Fat Bob
1987-1994 Harley Davidson FXLR Low Rider Custom
1982-1994 Harley Davidson FXR Super Glide II
1982-1992 Harley Davidson FXRS Low Glide
1990-1993 Harley Davidson FXRS-Conv Low Rider Sport Convertible
1987-1993 Harley Davidson FXRS-SP Low Rider Sport
1983-1992 Harley Davidson FXRT Sport Glide
1977-1982 Harley Davidson FXS Low Rider
1983-1985 Harley Davidson FXSB Low Rider - Belt
1980-1986 Harley Davidson FXWG Wide Glide
1979 Harley Davidson XLCH
1977-1978 Harley Davidson XLCR Cafe Racer
1979-1985 Harley Davidson XLH1000
1986-1987 Harley Davidson XLH1100
1988-2003 Harley Davidson XLH1200
1986-2003 Harley Davidson XLH883
1986-1995 Harley Davidson XLH883DLX Sportster 883 Deluxe
1987-2003 Harley Davidson XLH883HUG Sportster 883 Hugger
1996-2003 Harley Davidson XL1200C Sportster 1200 Custom
1999-2003 Harley Davidson XL883C Sportster 883 Custom
1983-1984 Harley Davidson XR1000
1983-1984 BMW R100
1979-1984 BMW R45
1974-1976 BMW R60/6
1979-1984 BMW R65
1973 BMW R75/5
1973-1976 BMW R75/6
1978-1977 BMW R80/7
1973-1976 BMW R90S
1979-1980 Honda CBX
1983 Honda CB1000C Custom
1983 Honda CB1100F
1973-1974 Honda CB350F
1974-1976 Honda CB360
1975-1977 Honda CB400F Super Sport
1971-1974 Honda CB500
1975-1976 Honda CB500T Twin DOHC
1975-1977 Honda CB550F Super Sport
1974-1978 Honda CB550K
1979-1982 Honda CB650
1980-1981 Honda CB650C Custom
1983-1985 Honda CB650SC Nighthawk
1976-1978 Honda CB750A Automatic
1980-1982 Honda CB750C Custom
1975-1982 Honda CB750F Super Sport
1969-1982 Honda CB750K
1982-1982 Honda CB750SC Nighthawk
1980-1982 Honda CB900C Custom
1981-1982 Honda CB900F Super Sport
1976-1977 Honda CJ360
1974-1976 Honda CL360 Scrambler
1980-1979 Honda CM200T Twinstar
1979-1981 Honda CM400A Hondamatic
1981 Honda CM400C Custom
1980-1981 Honda CM400E
1979-1981 Honda CM400T
1982-1983 Honda CM450A Hondamatic
1982 Honda CM450C Custom
1982-1983 Honda CM450E
1978-1979 Honda CX500
1980-1982 Honda CX500C Custom
1982-1983 Honda FT500 Ascot
1989-1990 Honda GB500
1983-1986 Honda VF1100C V65 Magna
1984-1985 Honda VF500C V30 Magna
1984 Honda VF700C Magna
1982-1983 Honda VF750C V45 Magna
1983-1984 Honda VT500C Shadow
1983-1984 Honda VT500FT Ascot
1985-1990 Kawasaki EN450A 454 LTD
1972-1975 Kawasaki H2 Mach IV
1976-1978 Kawasaki KH400
1976 Kawasaki KH500
1977-1983 Kawasaki KZ1000A/J
1977-1982 Kawasaki KZ1000B/K LTD
1981-1982 Kawasaki KZ1000M CSR
1982-1983 Kawasaki KZ1000R Lawson Replica
1981-1982 Kawasaki KZ1100B GPZ
1983 Kawasaki KZ1100L LTD Shaft
1980-1982 Kawasaki KZ250
1981-1982 Kawasaki KZ305 CSR
1980-1983 Kawasaki KZ440A LTD
1980-1982 Kawasaki KZ440B/G
1980-1983 Kawasaki KZ550A
1980-1980 Kawasaki KZ550C LTD
1981 Kawasaki KZ550D/H GPZ
1983 Kawasaki KZ550F Spectre
1977-1980 Kawasaki KZ650B/F
1978-1979 Kawasaki KZ650D SR
1981-1983 Kawasaki KZ650H CSR
1980-1982 Kawasaki KZ750B/E
1980 Kawasaki KZ750G LTD II
1980-1983 Kawasaki KZ750H LTD
1982 Kawasaki KZ750R GPZ
1976 Kawasaki KZ900 LTD
1973-1975 Kawasaki KZ900/Z1
1986-2006 Kawasaki VN750A Vulcan 750
2000-2001 Kawasaki W650
1987 Kawasaki ZL1000 Eliminator
1987 Kawasaki ZL600 Eliminator
1986 Kawasaki ZL600 Eliminator
1985-1986 Kawasaki ZL900A Eliminator
1984-1985 Kawasaki ZN1100B LTD
1980-1982 Suzuki GN400
1978-1979 Suzuki GS1000
1980-1981 Suzuki GS1000G
1982 Suzuki GS1000S Katana
1980-1983 Suzuki GS1100E
1982-1983 Suzuki GS1100G
1980 Suzuki GS1100L
1983 Suzuki GS1100S Katana
1981 Suzuki GS250T
1983 Suzuki GS300L
1977-1978 Suzuki GS400X
1979 Suzuki GS425
1980-1983 Suzuki GS450E
1977-1979 Suzuki GS550
1981-1982 Suzuki GS650E
1981-1983 Suzuki GS650G
1983 Suzuki GS650M Katana
1978-1982 Suzuki GS750E
1979-1981 Suzuki GS750L
1983 Suzuki GS750S Katana
1979-1983 Suzuki GS850G
1973-1977 Suzuki GT185
1973-1977 Suzuki GT250
1972-1977 Suzuki GT380
1972-1977 Suzuki GT550
1990-1993 Suzuki VX800
1981-1983 Yamaha XJ550 Maxim
1981-1983 Yamaha XJ550R Seca
1980-1983 Yamaha XJ650 Maxim
1981-1983 Yamaha XJ650L Turbo Seca
1981-1982 Yamaha XJ750R Seca
1977-1981 Yamaha XS400
1975-1981 Yamaha XS650
1979 Yamaha XS650-2 Special II
1978-1983 Yamaha XS650S Special
1987-2000 Yamaha XV535 Virago
1986-1990 Yamaha YX600 Radian

Item Details

  • High-quality progressive rate springs
  • Provides plush performance, stability and prevents excessive bottoming
  • Sold in pairs
  • Available in chrome or black

Manufacturers Part Number

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