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K-Tuned

102mm Length Helper Spring

Name: 102mm Length Helper Spring
Brand: K-Tuned
SKU: H030-040-250
Price: 220.00 USD
Availability: InStock

$220.00

SKU: H030-040-250

In Stock

Ships by Aug 31

Free Shipping over $200

$100 Minimum Order

30 Days Return

Description

This design feature aims to have a minimal impact on the overall spring rate of your main coilover springs, preserving intended suspension characteristics. It comes with a Stack Spring Adapter and is sold individually as one spring. Specifications for this helper spring include a length of 102mm (4.0 inches) and an inner diameter of 76mm (3.0 inches). The spring rate is 4.5kgf/mm, equivalent to 250 lbs/inch. It offers a stroke of 59mm (2.3 inches), a Free Collapsed Height (FCH) of 43mm (1.7 inches), and a Collapsed Weight (CW) of 265kg (584lbs).

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

Brand	K-Tuned
Part Number	H030-040-250
Category	Air and Fuel

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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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