Yamaha YZ85 Black Series Fork Setup Kit

Fits Yamaha YZ85 2015- inc new 2027 model Yamaha YZ85cc bikes.

Improved internals. Smoother action. Custom tuned to you.

The Krooztune Black Series Fork Setup Kit takes our proven YZ85 fork upgrade further, combining improved spring guidance, a redesigned hydraulic bottoming system and a custom damping setup built around your rider.

Drawing on years of Krooztune testing and an extensive setting bank, each kit is configured to suit your rider weight, riding discipline, ability and preferred suspension feel. From a developing junior chasing comfort and confidence to an experienced racer needing stronger support, your selected setting comes installed in the kit, ready for fitting into your forks.

A better foundation for performance

The standard KYB fork provides a solid starting point, but its basic spring guidance and limited bottoming control leave room for improvement. Poor internal alignment can contribute to rattling and friction, while the standard bottoming arrangement can deliver a harsh finish to the stroke.

The Black Series kit addresses these mechanical limitations alongside the damping, creating a smoother, more controlled fork with support matched to the rider.

Improved spring guidance and alignment

Our updated design integrates the bottoming piston into the spring guide, keeping these components true and aligned as they work together.

This arrangement improves spring guidance and promotes smooth, consistent movement. It also simplifies cartridge assembly and servicing, making the components easier to align during a rebuild.

Redesigned hydraulic bottoming system and main stack comp pistons

The improved hydraulic bottoming system delivers more controlled resistance towards the end of the stroke, helping reduce harsh bottoming on heavy landings and bigger impacts.

Combined with the rider’s custom damping setting aligned with our new piston design, it provides confidence deeper in the travel while maintaining a comfortable, responsive feel through smaller bumps.

Years of data. Your individual setup.

This is more than a hardware upgrade with a single setting for every rider.

Our extensive setting bank gives us a proven starting point for each order. We use your rider details to select and build a coordinated compression, mid-valve and rebound setup suited to your needs.

Choose your riding discipline—motocross, off-road or supercross—then provide your weight, ability and preferred feel. Whether the goal is plush comfort, balanced club-race performance or firmer support for faster racing, we configure the kit accordingly.

Kit includes

• Updated spring guides with integrated bottoming pistons

• Improved hydraulic bottoming system

• All new 17 mm face compression pistons

• Custom mid-valve shim stacks

• Custom base compression shim stacks

• Rebound tuning shims matched to your setup

• Specification sheet detailing your supplied setup

Enter your rider details when ordering. We build your Black Series kit with your custom setting installed—ready for fitting into your forks.

For a complete bike setup check out :  

Yamaha YZ85cc Fork and Shock Suspension Upgrade Kit