Suspension Parts for 1990 KAWASAKI KX125 Motorbikes | Guaranteed Fitment

Discover suspension parts guaranteed to fit the 1990 KAWASAKI KX125. Every product in this category has been validated against year-specific fork and shock specifications to ensure true compatibility.
You’ll find fork components, shock parts, shims, upgrade kits, complete suspension systems, chassis components, and the tools and fluids required for accurate servicing - all aligned with the suspension setup of the 1990 KAWASAKI KX125.

Use this page as a reliable reference when maintaining, rebuilding, or upgrading your bike’s suspension.

Bike-Specific Suspension Specifications & Setup Information

CALCULATE SPRING RATES

This is a recommendation only please consult your manual

Ideal Fork Rate:

kg/mm ( N/mm)

Ideal Shock Rate:

kg/mm ( N/mm)

BIKE DETAILS

Stock Fork Spring Rate

0.356

Stock Shock Spring Rate

4.8

Bike Type

MX

Ideal Rider Weight

75 kg

Engine Specifications

2 Stroke Engine 125 cc

FORKS INFO

Fork Manufacturer

Fork Type: KYB USD 41 mm OD

Fork Dimensions

Compression Nut Torque: 48 in-lb (0.56 kgf-m)

Fork Features

Twin Chamber Fork: No

Fork Oil

Fork Oil Weight: SAE 2.5
Fork Oil Level: 120 mm

Fork Spring Information

Spring Rate – Claimed: 0.37
Standard Preload: 10 mm

SHOCKS INFO

Shock Manufacturer

Shock Type: KYB 44 mm ID

Shock Dimensions

Nitrogen Pressure: 142 psi
Shock Length (Eye to Eye): 448 mm
Shock Travel: 133 mm
Shock Shaft Outer Diameter: 16 mm
Standard Sag: 95 mm
Shaft Nut Torque: 25 ft-lbs (34 NM)
Shock Oil: 2.5 Weight
Standard Preload: 14

Shock Spring Information

Spring Rate - Claimed: 4.8 kg/mm

Fitment-Matched Suspension Parts by Category

FORK SEALS & BUSHES

7 Parts

Please wait, loading parts....

TOOLS & LUBRICANTS

19 Parts

Please wait, loading parts....

All Fitment-Matched Suspension Parts

Browse All 42 Products for KAWASAKI KX125 1990

Shock Bushing Driver Set

Techtool

Shock Bushing Driver Set

(SKU: 93-118-00)

$33.00
11 In Stock

DRC Fork Seal Driver Set | Universal | 40-50mm

DRC Zeta Hardware

DRC Fork Seal Driver Set | Universal | 40-50mm

DRC Fork Seal Driver Tool Set
(SKU: D59-26-005)

$177.09
29 In Stock

DRC SHOCK SEAL HEAD INSERT KIT | KYB/SHOWA | INNER 12mm / OUTER 14/16/18mm

DRC Zeta Hardware

DRC SHOCK SEAL HEAD INSERT KIT | KYB/SHOWA | INNER 12mm / OUTER 14/16/18mm

Shock seal Bullet set -14x12 16x12 18x12
(SKU: D59-37-135)

$49.50
7 In Stock

DRC ENZO | Fork Bracket Holder | 20/22/25/26/27mm Axle Sizes

Enzo Racing

DRC ENZO | Fork Bracket Holder | 20/22/25/26/27mm Axle Sizes

Co-developed product with Enzo Racing
(SKU: ED59-37-240)

$65.00
19 In Stock

SKF 41mm KYB Fork Seal and Wiper Set

SKF Sealing

SKF 41mm KYB Fork Seal and Wiper Set

Requires 2 kits for complete fork service.
(SKU: SKF41K)

From $59.95

Colour: Green

$59.95
8 In Stock

Colour: Black

$59.95
24 In Stock

Fork Tube Slide Bushing Pair - 41mm Forks

Kayaba (KYB) Genuine Motorcycle Parts

Fork Tube Slide Bushing Pair - 41mm Forks

OEM KYB Japan Motorcycle Suspension Service Parts
(SKU: 110044100902)

Inside Diameter d (mm): 41.0

Fork Inner Tube Ø d (mm): 41.0

Height H (mm): 12.0

Outside Ø D (mm): 46.0

Wall Thickness (mm): 2.5

$41.58
Special Order

Rear Shock Service Kit KYB 44/16mm Oil Seal Large

Kayaba (KYB) Genuine Motorcycle Parts

Rear Shock Service Kit KYB 44/16mm Oil Seal Large

Genuine OEM Kayaba Motorcycle Suspension Parts
(SKU: 129996000801)

$57.76
Special Order

Front Fork KYB Oil 01M 1L *Discontinued*

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork KYB Oil 01M 1L Discontinued

Original KYB Suspension Lubricants
(SKU: 130010010101)

Pack Size: 1 L Pack

$48.96
Special Order

Front Fork KYB Oil 01M 5L *Discontinued*

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork KYB Oil 01M 5L Discontinued

Original KYB Suspension Lubricants
(SKU: 130010050101)

Pack Size: 5 L Bottle

$226.19
Special Order

Front Fork KYB Oil 01M 200L *Discontinued*

Kayaba (KYB) Genuine Motorcycle Parts

Front Fork KYB Oil 01M 200L Discontinued

Original KYB Suspension Lubricants
(SKU: 130012000101)

Pack Size: 200 L Drum

$8,088.49
Special Order

© 2026 Teknik Motorsport Pty Ltd. ABN: 29137380324. All rights reserved.

Welcome to our website. If you continue to browse and use this website, you are agreeing to comply with and be bound by the following terms and conditions of use, which together with our privacy policy govern Teknik Motorsport Pty Ltd’s relationship with you in relation to this website. If you disagree with any part of these terms and conditions, please do not use our website.

The term ‘Teknik Motorsport Pty Ltd’ or ‘us’ or ‘we’ refers to the owner of the website whose registered office is 4/5 Harford St, JAMISONTOWN, NSW, 2750, AUSTRALIA. Our ABN is 29137380324. The term ‘you’ refers to the user or viewer of our website.

The use of this website is subject to the following terms of use:

The content of the pages of this website is for your general information and use only. It is subject to change without notice.
Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any particular purpose. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors to the fullest extent permitted by law.
Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.
This website contains material which is owned by or licensed to us. This material includes, but is not limited to, the design, layout, look, appearance and graphics. Reproduction is prohibited other than in accordance with the copyright notice, which forms part of these terms and conditions.
All trademarks reproduced in this website, which are not the property of, or licensed to the operator, are acknowledged on the website.
Unauthorised use of this website may give rise to a claim for damages and/or be a criminal offence.
From time to time, this website may also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no responsibility for the content of the linked website(s).
Your use of this website and any dispute arising out of such use of the website is subject to the laws of Australia.

This privacy policy sets out how we use and protect any information that you give us when you use this website.

We are committed to ensuring that your privacy is protected. Should we ask you to provide certain information by which you can be identified when using this website, then you can be assured that it will only be used in accordance with this privacy statement.

1. WHAT WE COLLECT

We may collect the following information:

name and job title
contact information including email address
demographic information such as postcode, preferences and interests
other information relevant to customer surveys and/or offers

2. WHAT WE DO WITH THE INFORMATION WE GATHER

We require this information to understand your needs and provide you with a better service, and in particular for the following reasons:

Internal record keeping.
We may use the information to improve our products and services.
We may periodically send promotional emails about new products, special offers or other information which we think you may find interesting using the email address which you have provided.

3. SECURITY

We are committed to ensuring that your information is secure. In order to prevent unauthorised access or disclosure, we have put in place suitable physical, electronic and managerial procedures to safeguard and secure the information we collect online.

We take all reasonable steps to keep secure any information which we hold about you.
Personal information may be stored both electronically on our computer system, and in hard-copy form.
Firewalls, 2048 Bit v3 SSL encryption, passwords, anti-virus software and email filters act to protect all our electronic information.
We do not store credit card information, we securely submit credit card information to our bank for processing.
We will not sell, distribute, lease or disclose your personal information to third parties (unless we are required by law to do so).
We may use your personal information to occasionally send you promotional information about our products and services which we think you may find interesting.
Should you wish to have your personal information removed or updated, or you would like to stop receiving advertising please CONTACT US.

4. HOW WE USE COOKIES

A cookie is a small file which asks permission to be placed on your computer's hard drive. Once you agree, the file is added and the cookie helps analyse web traffic or lets you know when you visit a particular site. Cookies allow web applications to respond to you as an individual. The web application can tailor its operations to your needs, likes and dislikes by gathering and remembering information about your preferences.

We use traffic log cookies to identify which pages are being used. This helps us analyse data about webpage traffic and improve our website in order to tailor it to customer needs. We only use this information for statistical analysis purposes and then the data is removed from the system.
Overall, cookies help us provide you with a better website by enabling us to monitor which pages you find useful and which you do not. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.
You can choose to accept or decline cookies. Most web browsers automatically accept cookies, but you can usually modify your browser setting to decline cookies if you prefer. This may prevent you from taking full advantage of the website.

LINKS TO OTHER WEBSITES Our website may contain links to other websites of interest. However, once you have used these links to leave our site, you should note that we do not have any control over that other website. Therefore, we cannot be responsible for the protection and privacy of any information which you provide whilst visiting such sites and such sites are not governed by this privacy statement. You should exercise caution and look at the privacy statement applicable to the website in question.

5. CONTROLLING YOUR PERSONAL INFORMATION

You may choose to restrict the collection or use of your personal information in the following ways:

whenever you are asked to fill in a form on the website, look for the box that you can click to indicate that you do not want the information to be used by anybody for direct marketing purposes
if you have previously agreed to us using your personal information for direct marketing purposes, you may change your mind at any time by CONTACTING US.