Engines and Components Camshafts and Valvetrain

Isky

VALVE SPRINGS

$228.35

SKU: I00P 4905

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Isky 4905 dual valve spring set is designed for high-performance engine applications. These springs feature an outer diameter of 0.940/1.290 inches and an inner diameter of 0.690/0.940 inches, with a rate of 360 lbs per inch.

They offer a seat pressure of 125 lbs at 1.800 inches and an open pressure of 360 lbs at 1.150 inches, ensuring robust valve control.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandIsky
Part NumberI00P 4905

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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