Model: YZ450F YZ250F
Relevant Years: 2018-2022 YZ450F 2019-2022 YZ250F
Oem Trim / Test notes: Overall a very good bike in oem trim with many riders able to moto on loamy smooth tracks and big jumps without too much issue. Under race conditions and on rough, choppy tracks we have found the oem setting to be too firm especially on initial action and under hand feeling through the grips. It’s a simple setting / valving change required to transform these blue bikes to have a plusher feeling while still retaining great holdup. Tested Settings are available across the board from ABC -VET level thru to A professional motocross.
Base Setup – Disassemble clean and inspect suspension units. Modify Valving specs to Krooztune tested data. Install service parts required and rebuild suspension units to specification.
Fork only $450
Shock only $350
Fork and Shock $800
Lowering Options Available, call for information
If rider weight is outside of oem spring rate range, heavier or lighter fork and shock springs may be required.
*Service wear parts and performance upgrade parts not included
Additional Service Options
Chassis service / regrease pivot points. Head stem, Linkage, swingarm. Labour and grease $150
*Wear parts not included
Optional Krooz Racing Performance parts:
Highspeed Compression piston – High flow Alloy piston to reduce highspeed shaft induced compression spikes.
Performance Linkage- Allows rear end hold down and a flatter bike into the turns without the need to reduce shock spring preload. Retaining excellent drive out of the turns and reducing sudden weight transfer under heavy braking scenarios.
Mid Valve Post Assembly – The oem mid valve compression and rebound post we have tested to be best suited for pro and high A level riders only. Our Krooz Racing Midvalve post assembly allows a much plusher feeling in hand and a smoother overall suspension action better suited to most Aus MX applications and harsh conditions.
Common Service parts
SKF Heavy Duty Forkseals $100
Shock Sealhead rebuild kit $50
Fork Bushes x2 $40 (most common) or x4 bushes in kit $80
Further Performance Suspension Upgrade Options
Xtrig Preload adjuster $280
DLC Black fork tubes $450 each (2 required)
Kashima Upper tubes $550 each (2 required)
Technical Touch Factory Kit Option
Xtrig Clamps $1150 including PHDS bar mounts
Precision Steering Damper available $1100