In warehouse stock

Progressive Suspension Shock Springs — 70-120 lb/in — Black

Progressive Suspension · #DS-310030 · 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

Standard spring on the black 4000 series shocks. 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

Progressive Spring Rate: 75.00 lb/in - 120.00 lb/in, 1.34 kg/mm - 2.14 kg/mm
Riding Style: Street
Mounting Position: Rear
Color/Finish: Black
Type: Shock
Duty: Standard
Length: 9.75"
Units: Pair
Model: 12 Series
Spring Type: Single Progressive Rate
Shipping weight: 4.05 lb
Package size: 17.1 × 6.8 × 3.5 in
Country of origin: Taiwan

Fitment180 models · Ducati, Honda, Hyosung, Kawasaki, Laverda, Moto Guzzi, Suzuki, Triumph, Yamaha

Ducati14 models

1000 MHR1976–1987
2501971–1978
500 GTL1977
500 Pantah1980–1985
600 SL Pantah1980–1985
750 Darmah1977–1985
750 S1972–1977
900 GT1977–1979
900 SS1976–1985
Darmah 9001977–1985
Darmah 900 SS1976–1985
GT 7501972–1977
GT 8601975–1977
GTS 9001977–1979

Honda40 models

CB250RS1980–1984
CB3501968–1973
CB350F1973–1974
CB350F Super Sport1975–1977
CB350F11973–1977
CB350S1986–1988
CB3601974–1977
CB360G1974–1977
CB360T1974–1977
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
CB750F1992–1996
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 Hondamatic1979–1983
CM450C Custom1979–1983
CM450E1979–1983
FT500 Ascot1982–1983
GB5001989–1990
VF500C Magna V301986
VF500C V30 Magna1984–1985
XBR5001985–1989

Hyosung1 models

GT 2501972–1977

Kawasaki40 models

EN450A 454 LTD1985–1990
H2 Mach IV1972–1975
K 400 J1975–1980
KH 400 A1974–1975
KH4001976–1978
KH5001976
KZ 2501979
KZ 250 D CSR1980–1982
KZ 250 L CSR1980–1982
KZ 3051981–1983
KZ 3501981–1983
KZ 4001980–1983
KZ 440 B1975–1979, 1983
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 Twin1976–1980
KZ2501980–1982
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 Custom1979
KZ650D SR1978–1979
KZ650E LTD1980
KZ650H CSR1981–1983
W 6502002
W6502000–2001
Z1 9001973–1975
ZL 600 A1986–1987

Laverda7 models

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

Moto Guzzi8 models

850 LeMans II1978–1981
850 LeMans III1976–1983
850 T31972–1983
LeMans 8501976–1982
LM 850 III1981–1983
T 8501972–1982
T4 8501980–1983
V501979–1983

Suzuki30 models

GN 2501987, 1989–1995
GN 400 X1980–1982
GN2501988
GN4001980–1982
GS 2501981–1982
GS 4001977–1978, 1980–1985
GS 5001978–1983
GS 5501980–1982
GS 650 L1981–1982
GS300L1983
GS4251979
GS450E1980–1983
GS450GA1982–1983
GS450L1980–1983
GS5501977–1979
GS650E1981
GS650G1981–1983
GS650M Katana1983
GSX 2501980–1984
GSX 400 E1980–1985
GT 185 Adventurer1972
GT 250 Hustler1972
GT 500 Titan1972–1975
GT1851973–1977
GT2501973–1977
GT3801972–1977
GT5001976–1977
GT5501972–1977
SP3701978–1979
SP4001980

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

Yamaha25 models

KX550R Seca1981–1983
RD3501973–1975
RD4001976–1979
SR 250 Exciter1977–1979, 1983–1995
SR 5001977, 1982–1983
SR2501980–1982
SR5001978–1981
XJ 4001980–1983
XJ 5501981–1983
XJ 750 Maxim1984
XJ550 Maxim1981–1983
XJ550R Seca1981–1983
XJ650 Maxim1980–1983
XJ650L Turbo Seca1982–1983
XJ650R Seca1982
XJ750 Maxim1982–1983
XJR 4001993
XS 3601978–1981
XS 4001982–1983
XS 400 S Special1977–1979, 1983
XS 6501975–1983
XS 650 Twin1975–1983
XS3601977
XS4001978–1981
XS400S Special1980–1982

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-310030
Progressive Suspension part #: 03-1394B

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 #03-1394B.