Isky Valve Springs
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Iskenderian Produces 3 New "9000 Series" High Performance level springs- High Endurance™,
Endurance Plus™, and Tool Room™.
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High Endurance™ Springs are wound from "Super Clean"
Chrome Silicone Wire!
Every Part No. Test-Proven 700 Racing Miles
Affordable, Reliable
Durable Performance
First-Ever Endurance Tested Springs
Recommended Maximum 8,000 RPM
| Part No. |
Style |
Outer OD/ID |
Inner OD/ID |
Seat Pressure |
Open Pressure |
Max. Lift |
Price |
| 9315 |
Dual w/ Damper |
1.025 1.550 |
.740 1.135 |
210 Lbs. @1.900" |
520 Lbs. @1.240" |
.660" |
$183 |
| 9365 |
Dual w/ Damper |
1.025 1.550 |
.740 1.135 |
215 Lbs. @1.950" |
550 Lbs. @1.270" |
.680" |
$183 |
| 9365SP |
Dual w/ Damper |
1.025 1.550 |
.740 1.135 |
225 Lbs. @1.950" |
550 Lbs. @1.270" |
.680" |
$183 |
| 9375 |
Dual w/ Damper |
1.040 1.560 |
.740 1.145 |
225 Lbs. @1.970" |
550 Lbs. @1.290" |
.680" |
$247 |
| 9375/85 |
Dual w/ Damper (Tool Room™ Outer/Silicon Inner) |
1.040 1.560 |
.740 1.145 |
250 Lbs. @1.970" |
580 Lbs. @1.290" |
.680" |
$284 |
| 9385 |
Dual w/ Damper |
1.040 1.560 |
.740 1.145 |
240 Lbs. @2.000" |
600 Lbs. @1.280" |
.720" |
$247 |

Endurance Plus™ Springs feature the Higher Alloy
Outer Spring "Plus" special processing for increased durability!
Every Part No. Test-Proven 850 Racing Miles
Minimal Load Loss
Exceptional Service Life
More Durability For Higher Revving
Recommended Maximum 8,400 RPM
| Part No. |
Style |
Outer OD/ID |
Inner OD/ID |
Seat Pressure |
Open Pressure |
Max. Lift |
Price |
9365 Plus |
Dual w/ Damper (Tool Room™ Outer/Silicon Inner) |
1.040 1.560 |
.740 1.145 |
235 Lbs. @1.950" |
560 Lbs. @1.270" |
.680" |
$284 |
9375 Plus |
Dual w/ Damper (Tool Room™ Outer/Silicon Inner) |
1.040 1.560 |
.740 1.145 |
230 Lbs. @1.970" |
560 Lbs. @1.290" |
.680" |
$284 |
9375/85 Plus |
Dual w/ Damper (Tool Room™ Outer/Silicon Inner) |
1.040 1.560 |
.740 1.145 |
250 Lbs. @1.970" |
580 Lbs. @1.290" |
.680" |
$284 |
9385 Plus |
Dual w/ Damper (Tool Room™ Outer/Silicon Inner) |
1.040 1.560 |
.740 1.145 |
245 Lbs. @2.000" |
600 Lbs. @1.280" |
.720" |
$284 |

Tool Room™ Springs feature the Highest Quality Alloy
Wire and trade secret endurance processing. They're indefatigable!
Every Part No. Test-Proven 1,000 Racing Miles
Near-Zero Load Loss
Absolute Maximum Endurance
Gold Standard Test Certification
World's Finest Racing Springs
Recommended Maximum 8,800 RPM
| Part No. |
Style |
Outer OD/ID |
Inner OD/ID |
Seat Pressure |
Open Pressure |
Max. Lift |
Type of Cam |
Price |
| 9915 |
Dual w/ Damper |
1.560"
1.145" |
1.040"
.740" |
195 Lbs @1.975" |
540 Lbs @1.275" |
.700" |
"Winston Cup" Flat Tappet |
$513 |
| 9935 |
Dual Damperless |
1.560"
1.155" |
1.153"
.820" |
245 Lbs
@1.950" |
590 Lbs. @1.250" |
.700" |
Roller |
$437 |
| 9945 |
Dual w/ Damper |
1.625"
1.175" |
1.065"
.770" |
250 Lbs @2.020" |
675 Lbs. @1.270" |
.750" |
Roller |
$437 |
| 9965 |
Dual w/ Damper |
1.560"
1.145" |
1.040"
.740" |
245 Lbs @1.950" |
585 Lbs @1.270" |
.680" |
Roller |
$437 |
| 9975 |
Dual w/ Damper |
1.560"
1.145" |
1.040"
.740" |
245 Lbs @1.970" |
585 Lbs @1.290" |
.680" |
Roller |
$437 |
| 9985 |
Dual w/ Damper |
1.560"
1.145" |
1.040"
.740" |
245 Lbs
@2.000" |
600 Lbs @1.300" |
.700" |
Roller |
$437 |
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