In warehouse stock

Progressive Suspension Shock Springs — 95-140 lb/in — Black

Progressive Suspension · #DS-310031 · Rear Suspension / Hardware & Accessories

Selecting your own springs allows fine tuning for your specific needs
Made in the U.S.A.
These springs must be ordered when ordering 12-series shocks.
Can be used as replacements for the 412-series shocks.

$97.95

In stock. Ships in 2–4 business days · free shipping over $150.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

Description & features4 features

These springs will not fit shock parts #s DS-222003, DS-222009, or DS-310087.

Selecting your own springs allows fine tuning for your specific needs
Made in the U.S.A.
These springs must be ordered when ordering 12-series shocks.
Can be used as replacements for the 412-series shocks.

Specifications13 specs

Color/Finish: Black
Length: 9.37"
Progressive Spring Rate: 1.61 kg/mm - 2.32 kg/mm, 90.00 lb/in - 130.00 lb/in
Units: Pair
Type: Shock
Riding Style: Street
Spring Type: Single Progressive Rate
Duty: Heavy Duty
Model: 12 Series
Mounting Position: Rear
Shipping weight: 3.85 lb
Package size: 17.1 × 6.8 × 3.5 in
Country of origin: Taiwan

Fitment281 models · BMW, Ducati, Honda, Hyosung, Kawasaki, Laverda, Moto Guzzi, Norton, Suzuki, Triumph, Yamaha

BMW14 models

R 901973–1984
R 90 S1977–1984
R1001976–1984
R451979–1984
R60/61974–1976
R651979–1984
R751973–1977
R75 /51974–1980
R75 /71973–1975
R75/51973
R75/61973–1976
R75/71976–1977
R80/71978–1983
R90S1973–1976

Ducati12 models

1000 MHR1976–1987
500 GTL1977
500 Pantah1980–1985
600 SL Pantah1980–1985
750 Darmah1977–1985
750 S1972–1977
900 GT1977–1979
900 SS1976–1985
Darmah 9001977–1985
GT 7501972–1977
GT 8601975–1977
GTS 9001977–1979

Honda58 models

CB1000C1983
CB1000C Custom1983
CB11001982–1983
CB1100F1983
CB3501968–1973
CB350F1973–1974
CB350F Super Sport1975–1977
CB350F11973–1977
CB3601974–1977
CB4001992–1993
CB400F CB-11973–1977
CB400F Super Sport1973–1977
CB4501968–1976
CB5001971–1973
CB500T Twin DOHC1975–1976
CB550F Super Sport1974–1978
CB550K1974–1978
CB6501979–1982
CB650C Custom1980–1981
CB650SC Nighthawk1983–1985
CB750 Nighthawk1991–2003
CB750A Automatic1976–1978
CB750A Hondamatic1979–1982
CB750C Custom1976–1982
CB750F1975–1982, 1992–1996
CB750F Super Sport1975–1978
CB750K1969–1982
CB750SC Nighthawk1982–1983, 1991–2000, 2002
CB900C Custom1980–1982
CB900F 9191980–1982
CB900F Super Sport1980–1982
CBX1979–1980
CJ3601976–1977
CJ360T1974–1975
CL350 Scrambler1968–1973
CL360 Scrambler1974–1976
CL360K Scrambler1977
CL450K Scrambler1968–1976
CM185T Twinstar1979–1980
CM200T Twinstar1979–1980
CM400A Hondamatic1979–1981
CM400C Custom1979–1981
CM400E1979–1981
CM400T1979–1981
CM450A Hondamatic1982–1983
CM450C Custom1982–1983
CM450E1982–1983
CX5001978–1982
CX500C Custom1980–1982
FT500 Ascot1982–1983
GB5001989–1990
VF1100C V65 Magna1983–1986
VF500C Magna V301986
VF500C V30 Magna1984–1985
VF750C V45 Magna1982–1983
VT500C Shadow1983–1984
VT500FT Ascot1983–1984
XBR5001985–1989

Hyosung1 models

GT 2501972–1977

Kawasaki73 models

EN450A 454 LTD1985–1990
GPZ 11001981–1982
H2 Mach IV1972–1975
KH 400 A1974–1975
KH4001976–1978
KH5001976
KZ 10001977–1982
KZ 1000 B Ltd1976, 1981–1982
KZ 1000 D Z1R1976–1977
KZ 1000 E ST1981
KZ 1000 K Ltd1976–1980
KZ 1000 R Lawson Replica1981
KZ 11001981–1983
KZ 1100 L Ltd1984–1985
KZ 250 D CSR1980–1982
KZ 250 L CSR1980–1982
KZ 3051981–1983
KZ 3501981–1983
KZ 4001980–1983
KZ 440 B1983
KZ 440 G1980–1983
KZ 550 D Gpz1980–1981
KZ 550 F Ltd1980–1983
KZ 550 F Spectre1980–1982
KZ 550 H Gpz1980
KZ 550 M Ltd1980–1982
KZ 650 B1981–1983
KZ 650 F1980
KZ 750 E1980–1983
KZ 750 Gpz1982
KZ 750 Twin1976–1980
KZ 900 A1978–1980
KZ 900 B Ltd1977–1980
KZ1000A/J1981–1983
KZ1000B/K LTD1977–1982
KZ1000D Z1R1978–1980
KZ1000E Shaft1979–1980
KZ1000M CSR1981–1982
KZ1000R Lawson Replica1982–1983
KZ1100A1981–1983
KZ1100B GPZ1981–1982
KZ440A LTD1980–1983
KZ440B/G1980–1982
KZ440D LTD Belt1980–1983
KZ550A1980–1983
KZ550C LTD1980–1983
KZ550D/H GPZ1981
KZ550F Spectre1983
KZ550M LTD Shaft1983
KZ650B/F1977–1980
KZ650C Custom1977–1979
KZ650D SR1978–1979
KZ650E LTD1980
KZ650H CSR1981–1983
KZ750H LTD1980–1983
KZ750R GPZ1982
KZ900 LTD1976
KZ900/Z11976–1977
VN700A Vulcan1985
VN750A Vulcan 7501986–2006
W 6502002
W6502000–2001
Z1 9001973–1975
ZL 1000 A Eliminator1985–1986
ZL 600 A1986–1987
ZL 900 A Eliminator1987
ZL1000 Eliminator1987
ZL900A Eliminator1985–1986
ZN1100B LTD1984–1985
ZR 1100 Zephyr1992–1993
ZR11001994–1995
ZX 1100A Ninja GPZ1981–1982
ZX750 GPZ1982

Laverda8 models

10001970–1982
1000 RGA1983–1985
1000 RGS1983–1985
12001975–1981
3501979–1985
500 Zeta1973–1979
7501970–1982
750 F1973–1979

Moto Guzzi22 models

1000 LeMans IV1984–1987
1000 LeMans V1988
1000 SP1977–1983
850 LeMans II1978–1981
850 LeMans III1976–1983
850 T31976–1983
California 1000 II1976–1986
Eldorado 8501972–1982
LeMans 10001972–1982
LeMans 8501976–1982
LM 1000 IV1984–1986
LM 850 III1981–1983
T 8501972–1982
T4 8501980–1983
T5 8501983–1987
T5 850 Nuovo1984–1988
V501979–1983
V50 II1980
V50 III1981–1983
V50 Monza1981–1983
V65 Lario1984–1986
V7 Sport1971–1974

Norton1 models

Commando 8501972–1978

Suzuki56 models

GN 400 X1980–1982
GN4001980–1982
GS 10001980
GS 1100 G1984
GS 1100 L1982–1983
GS 2501981–1982
GS 4001977–1978, 1980–1985
GS 450 GA1980–1981
GS 450 S1982–1983
GS 450 T1980, 1983
GS 450 TX1980
GS 5001978–1983
GS 5501980–1982
GS 650 GT Katana1981–1986
GS 650 L1981–1982
GS 750 E1977
GS 750 L1977–1978, 1982
GS10001978–1979
GS1000E1978–1980
GS1000G1980–1981
GS1000S Katana1982
GS1100E1980–1983
GS1100G1982–1983
GS1100S Katana1983
GS300L1983
GS4251979
GS450E1980–1983
GS450GA1982–1983
GS450L1980–1983
GS450S1980–1981
GS450T1981–1982
GS450TX1981–1983
GS5501977–1979
GS650E1981
GS650G1981–1983
GS650GL1981–1983
GS650M Katana1983
GS750E1978–1982
GS750L1979–1981
GS750S Katana1983
GS850G1979–1983
GSX 1100 E1979–1985
GSX 400 E1980–1985
GT 185 Adventurer1972
GT 250 Hustler1972
GT 500 Titan1972–1975
GT1851973–1977
GT2501973–1977
GT3801972–1977
GT5001976–1977
GT5501972–1977
RE51975–1976
RE5 Rotary1974, 1977
SP3701978–1979
SP4001980
VX8001990–1993

Triumph15 models

Bonneville 650 T1201970–1972
Bonneville 750 T140D1979, 1981
Bonneville 750 T140E America1979
Bonneville 750 T140E Final Edition1981
Bonneville 750 T140ES1979
Bonneville 750 T140V1973
Bonneville 750 T140V Super Jubilee1977
Bonneville T1001971–1974
Bonneville T140 D1973–1978, 1980, 1982–1983
Bonneville T140 E1973–1978, 1980, 1982–1983
Bonneville T140 ES1973–1978, 1980–1983
Bonneville T140 V1974–1976, 1978–1983
TR1201972–1973
TR1401972–1983
TR61971–1972

Yamaha21 models

KX550R Seca1981–1983
XJ 4001980–1983
XJ 550 J Maxim1981–1983
XJ 750 Maxim1981, 1984
XJ550 Maxim1981–1983
XJ550R Seca1981–1983
XJ650 Maxim1980–1983
XJ650L Turbo Seca1982–1983
XJ650R Seca1982
XJ750 Maxim1982–1983
XJ750R Seca1981–1983
XJR 4001993
XS 400 S Special1977–1979, 1983
XS 650 Twin1975–1983
XS 7501980–1981
XS4001980–1981
XS400S Special1980–1982
XV 1000 Virago1986–1988
XV 535 Virago1989
XV535 Virago1987–1988, 1990–2000
YX600 Radian1986–1990

Fitment comes from the distributor’s catalog. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbers

Salto part #: DS-310031
Progressive Suspension part #: 03-1367B

Shipping

In stock at a distributor warehouse. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is re-checked with the warehouse before your card is charged.

Questions4 answers

Is it in stock?: Yes — the distributor shows it on a shelf at a regional warehouse right now. We check again the moment you order, before anything is charged.
How fast will it get to me?: Usually 2–4 business days by ground.
Will it fit my machine?: The distributor lists it for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine Progressive Suspension?: Yes. It ships new from the same distributors the big online stores buy from — Progressive Suspension part #03-1367B.