Engines and Components› Camshafts and Valvetrain

Supertech

Dual Valve Spring Set

$956.47

SKU: ST-SPRK-H1002D

In Stock
In Stock
Ships by Sep 12
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$100 Minimum Order
30 Days Return
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Overview

The Supertech Performance SPRK-H1002D/1FZ is a dual valve spring set designed for high-performance applications. These springs are constructed from premium Super Clean Chrome silicon Vanadium Steel alloy, offering enhanced performance and durability at high RPMs. Computer design ensures wire stress levels remain within fatigue limits for longevity under extreme conditions, while also controlling harmonics. The accompanying retainers are made from military-certified Titanium alloy and are CNC machined for a precise fit.
Show original supplier description
The Supertech Performance SPRK-H1002D/1FZ is a dual valve spring set engineered for demanding, high-RPM engine applications. Constructed from premium Super Clean Chrome silicon Vanadium Steel alloy, these springs are built to deliver exceptional performance and durability, even under extreme operating conditions. Supertech utilizes computer-aided design to meticulously engineer these valve springs. This design process ensures that wire stress levels are kept well within defined fatigue limits, promoting long-term reliability. Furthermore, the software is used to ensure that harmonics are effectively managed, contributing to smoother engine operation at high speeds. These retainers are CNC machined to achieve a precise fit, which is crucial for ensuring consistent valve operation and long-term durability within the valvetrain. The specified seat pressure is 70 lbs at 36.20mm, with an open pressure of 170 lbs at 14mm max lift. This specific part number, ST-SPRK-H1002D-1FZ, is listed as compatible with Toyota Landcruiser models equipped with the 1FZFE engine. Other listings indicate compatibility with Honda/Acura B-series engines, including B16, B18C1, B18C5, and B18A1 engines.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSupertech
Part NumberST-SPRK-H1002D
CategoryEngines and Components

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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