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Engines and Components› Camshafts and Valvetrain

Kibblewhite

Valve Spring Kit w/ Titanium Retainers

Name: Valve Spring Kit w/ Titanium Retainers
Brand: Kibblewhite
SKU: 40-40100

$234.95 $213.35 Save $21.60

SKU: 40-40100

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Overview

The Kibblewhite 40-40100 is a valve spring kit designed for racing applications. This kit features lightweight chrome silicon valve springs and titanium retainers to reduce valvetrain inertia. It is engineered for both intake and exhaust applications and supports high-performance valve lifts up to 0.445 inches.

Show original supplier description

The Kibblewhite 40-40100 is a lightweight racing valve spring kit engineered for high-performance applications. This kit is specifically designed for Kawasaki KX250F models from 2004 to 2016 and supports impressive valve lifts up to 0.445 inches, making it suitable for modern high-revving four-stroke engines. The kit utilizes lightweight chrome silicon valve springs and titanium retainers, which significantly reduce valvetrain inertia. This design contributes to optimal durability and performance, especially under extreme conditions found on the race track or trail. The springs are manufactured from the finest quality super-clean, chrome-silicon wire, wound to exacting standards and subjected to a controlled heat treatment, stress relief, and shot-peening process to ensure longevity and strength. It features dual springs per valve and includes a damper spring and retainers. The seat pressure at the installed height for both intake and exhaust valves is 46 lbs. The maximum lift for both intake and exhaust valves is 0.340 inches. The kit is sold as a complete set and utilizes OEM locks.

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.

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Specifications

Brand	Kibblewhite
Part Number	40-40100
Category	Engines and Components

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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

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