• Drag part number: DS-310032
• Manufacturer Number: 03-1368B
• 12 series shocks are gas-charged for superior, fade-free damping and consistent operation
• Six-stage, automatic damping - designed with a special anti-topping function
• Double-wall shock body construction for piston protection and long life
• Standard spring is recommended for bike as sold new, excluding any accessories, rider weight under 200 lb. and passenger use limited to under 50% of the time. Heavy-duty spring is recommended for riders over 200 lb., passenger usage over 50% of the time and/or add-on accessories of considerable weight.

• Product Name: Shock Spring
• Type: Fits 12.50", 13.00", 13.50" and 14.25" Shock
• Model: 12 Series
• Duty: Heavy Duty
• Color/Finish: Black
• Length: 9.37"
• Progressive Spring Rate: 105.00 lb/in - 150.00 lb/in
• Progressive Spring Rate: 1.88 kg/mm - 2.68 kg/mm
• Spring Type: Single Progressive Rate
• Mounting Position: Rear
• Units: Pair
• Riding Style: Street
• Riding Style: Offroad

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1981yamahaxs1100sspecial 1986yamahafzx700fazer 1987yamahafzx700fazer 1980yamahaxs850sspecial 1981yamahaxs850sspecial 1986yamahayx600radian 1987yamahayx600radian 1988yamahayx600radian 1989yamahayx600radian 1990yamahayx600radian 1978yamahaxs1100 1979yamahaxs1100 1980yamahaxs1100 1981yamahaxs1100 1980yamahaxs850 1981yamahaxs850 1978yamahaxs750sspecial 1979yamahaxs750sspecial 1981yamahaxj750rseca 1982yamahaxj750rseca 1983yamahaxj750rseca 1982yamahaxj1100maxim 1985yamahaxj700xmaxim 1986yamahaxj700xmaxim 1983yamahaxj900rseca 1984yamahaxv1000virago 1985yamahaxv1000virago 1986yamahaxv1000virago 1987yamahaxv1000virago 1988yamahaxv1000virago 1986yamahaxv1100virago 1987yamahaxv1100virago 1988yamahaxv1100virago 1989yamahaxv1100virago 1990yamahaxv1100virago 1991yamahaxv1100virago 1992yamahaxv1100virago 1993yamahaxv1100virago 1994yamahaxv1100virago 1995yamahaxv1100virago 1996yamahaxv1100virago 1997yamahaxv1100virago 1998yamahaxv1100virago 1999yamahaxv1100virago 1988yamahaxv750virago 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1978motoguzzicalifornia1000ii 1979motoguzzicalifornia1000ii 1980motoguzzicalifornia1000ii 1981motoguzzicalifornia1000ii 1982motoguzzicalifornia1000ii 1983motoguzzicalifornia1000ii 1984motoguzzicalifornia1000ii 1985motoguzzicalifornia1000ii 1986motoguzzicalifornia1000ii 1971motoguzziv7sport 1972motoguzziv7sport 1973motoguzziv7sport 1974motoguzziv7sport 1983motoguzzit5850 1984motoguzzit5850 1985motoguzzit5850 1986motoguzzit5850 1987motoguzzit5850 1984motoguzziv65lario 1985motoguzziv65lario 1986motoguzziv65lario 1975laverda1000 1976laverda1000 1977laverda1000 1978laverda1000 1979laverda1000 1980laverda1000 1981laverda1000 1975laverda1200 1976laverda1200 1977laverda1200 1978laverda1200 1979laverda1200 1980laverda1200 1981laverda1200 1972laverda750 1973laverda750 1974laverda750 1975laverda750 1976laverda750 1977laverda750 1978laverda750 1979laverda750 1980laverda750 1981laverda750 1982laverda750 1972nortoncommando850 1973nortoncommando850 1974nortoncommando850 1975nortoncommando850 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