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Krooztune

Yamaha YZ85 Fork Upgrade Kit

$309.95
Tax included. Shipping calculated at checkout.

Fits Yamaha 85cc 2015-2024 Models 

Our Yamaha fork upgrade kit brings this basic KYB fork up to speed with its EU rivals in KTM and Husqvarna.  The main issues we have found with the KYB mini fork in both 65 and 85 racers is the lack of parts internally. 

Poor spring guidance alongside a lack of a decent bottom out system results in a fork that rattles and bottoms harshly.  This poorly aligned setup matched to a basic shim setting leaves this fork behind in performance. 

Our upgrade kit addresses these issues and most importantly delivers a fork that is both plush in the hands of all speed mini racers and with great hold up for the faster pro mini racers.

 Kit includes

  • Spring Guides 
  • Hydraulic Bottoming System
  • 17mm Face Compression piston
  • Mid valve shim stack setting including Shims
  • Base compression Setting including Shims
  • Rebound tuning shims
  • Specification sheet to cover all setup options for various speed riders A/pro, B and C level mini racers

For a complete bike setup check out : 

Yamaha YZ85cc Fork and Shock Suspension Upgrade Kit

Product information

PRODUCT FEATURES

Australian Manufactured

Designed, tested and produced in Australia to meet the demands of real riders and harsh local conditions. Quality you can trust, built by riders who care.

CNC Machined Precision

Every component is machined in-house on high-accuracy CNC equipment, ensuring perfect tolerances, consistent performance and a premium finish.

High-Grade Alloys (AUS & NZ Sourced)

We use only premium billet alloys sourced from trusted suppliers in Australia and New Zealand, delivering superior strength, durability and long-term performance.

Engineered for Reliability

Each part is rigorously tested on track and in the workshop to ensure dependable performance under load, in all conditions — from weekend riding to pro-level racing.

Get Your Perfect Setup

Not sure which setting, kit level or upgrade is right for your bike?

We’ll match your suspension to your weight, speed and riding style using real data and years of race-proven experience.

Submit your details and we’ll guide you to the ideal setup.

Setup Here

F.A.Q.

They appreciate cut and details, things that aren't so obvious.

Do you offer setup advice with this product?


Absolutely.

Every purchase includes access to our Setup Form, where we provide personalised guidance on your ideal settings, spring rates, and upgrade choices.
Can I purchase items with another currency?

Yes, you may select a currency based on your personal preference. When you select your country in the country selector and set to your country’s version of the website, you will see prices listed in the regional currency.
Can I make changes to my order after it’s been placed?

Email Info@krooztune.com asap and quote your order number. Our emails are checked daily before shipping out any orders
What if I have issues or need support after buying?

We’re here to help.

You can reach us anytime for setup adjustments, technical questions or installation support. Krooztune products are backed by real riders and real workshop support.
Do I need to pay extra tariffs or taxes when ordering from the USA?

No — Krooztune covers all USA tariffs and import taxes.

The price you see at checkout is final, with no hidden fees or surprise charges upon delivery.

USA Customers: No Extra Duties — We Cover Everything
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USA Customers: No Extra Duties — We Cover Everything
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Precision-built parts designed, tested and machined in Australia.

Engineered for Performance

From billet alloys to fully tested suspension internals, every Krooztune component is created with one purpose — to deliver better control, improved feel and a more confident ride.


Built by riders, proven on track, and trusted worldwide.