Eibach Eib904.052.1 EMS Fork Spring Kit for Yamaha YZ250F and YZ450F

With a range of spring rate options available, you can fine-tune your suspension to deliver the perfect balance of comfort and performance. And, with a precise fit and easy installation, you'll be back on the road in no time, enjoying the benefits of your upgraded suspension.

• Eibach EMS Springs Available in a Full Range of Rates to Fine Tune Suspension to each Rider.
• Highest Linearity and Guaranteed Consistency
• Ultra-Lightweight for Reduced Unsprung Mass
• Each Spring Individually Tested
• Made In U.S.A.

Upgrade your motorcycle’s front suspension with the Eibach EMS Fork Spring Kit, part number Eib904.052.1. Designed for riders who want more precise suspension control, this kit provides a consistent spring rate and responsive handling across a wide range of riding conditions. Eibach EMS springs are available in multiple rates, allowing suspension tuning to better match rider weight, riding style, and terrain.

Each spring is individually tested for dependable consistency and manufactured in the USA using lightweight materials that help reduce unsprung mass. The result is improved suspension response without adding unnecessary weight. The springs are engineered for a precise fit and straightforward installation, making them a practical choice for upgrading the front suspension on compatible Yamaha motocross motorcycles.

This Eibach fork spring kit fits select 2014–2018 Yamaha YZ250F and YZ450F models, including the 2014–2016 YZ250F, 2014–2018 YZ450F, and 2017–2018 YZ250F. Verify the motorcycle year and model before installation. Professional installation and suspension setup are recommended to achieve the intended performance benefits.

What's Included

• One Eibach EMS fork spring kit
• Installation-ready suspension springs

Product Specifications and Technical Data

• Brand: Eibach
• Part Number: Eib904.052.1
• Product Type: Powersports fork spring kit
• Application: Front motorcycle suspension
• Spring Series: EMS
• Construction: Lightweight performance spring
• Origin: Made in the USA
• Fitment: Select 2014–2018 Yamaha YZ250F and YZ450F models

Features:

• Adjustable Spring Rate Options: Choose the appropriate Eibach EMS rate to fine-tune suspension response for rider weight, riding style, and terrain.
• Consistent Performance: Each spring is individually tested to help deliver dependable spring characteristics and predictable handling.
• Reduced Unsprung Mass: Lightweight construction supports quicker suspension response and improved front-end control.
• Precision Fit and Easy Installation: Engineered for compatible Yamaha applications to simplify installation and suspension upgrades.

Fitments:
2014 Yamaha YZ250F Base
2014 Yamaha YZ450F Base
2015 Yamaha YZ250F Base
2015 Yamaha YZ450F Base
2016 Yamaha YZ250F Base
2016 Yamaha YZ450F Base
2017 Yamaha YZ250F Base
2017 Yamaha YZ450F Base
2018 Yamaha YZ250F Base
2018 Yamaha YZ450F Base
2019 Yamaha WR450F Base
2019 Yamaha YZ250F Base
2019 Yamaha YZ450F Base
2019 Yamaha YZ450FX Base
2020 Kawasaki KX250 Base
2020 Yamaha WR250F Base
2020 Yamaha WR450F Base
2020 Yamaha YZ250F Base
2020 Yamaha YZ250FX Base
2020 Yamaha YZ450F Base
2020 Yamaha YZ450FX Base
2021 Kawasaki KX250 Base
2021 Kawasaki KX250X Base
2021 Yamaha WR250F Base
2021 Yamaha WR450F Base
2021 Yamaha YZ250F Base
2021 Yamaha YZ250FX Base
2021 Yamaha YZ450F Base
2021 Yamaha YZ450FX Base
2022 Kawasaki KX250 Base
2022 Kawasaki KX250X Base
2022 Yamaha WR250F Base
2022 Yamaha WR450F Base
2022 Yamaha YZ125 Base
2022 Yamaha YZ250 Base
2022 Yamaha YZ250F Base
2022 Yamaha YZ250FX Base
2022 Yamaha YZ450F Base
2022 Yamaha YZ450FX Base
2023 Kawasaki KX250 Base
2023 Kawasaki KX250X Base
2023 Yamaha WR250F Base
2023 Yamaha YZ125 Base
2023 Yamaha YZ125X Base
2023 Yamaha YZ250 Base
2023 Yamaha YZ250F Base
2023 Yamaha YZ250FX Base
2023 Yamaha YZ450F Base
2023 Yamaha YZ450FX Base
2024 Kawasaki KX250 Base
2024 Kawasaki KX250X Base
2024 Yamaha WR250F Base
2024 Yamaha YZ125 Base
2024 Yamaha YZ125X Base
2024 Yamaha YZ250 Base
2024 Yamaha YZ250F Base
2024 Yamaha YZ250FX Base
2024 Yamaha YZ450F Base
2024 Yamaha YZ450FX Base
2025 Kawasaki KX250X Base
2025 Yamaha WR250F Base
2025 Yamaha YZ125 Base
2025 Yamaha YZ125X Base
2025 Yamaha YZ250 Base
2025 Yamaha YZ250F Base
2025 Yamaha YZ250FX Base
2025 Yamaha YZ450F Base
2025 Yamaha YZ450FX Base
2026 Kawasaki KX250X Base
2026 Yamaha WR250F Base
2026 Yamaha YZ125 Base
2026 Yamaha YZ125X Base
2026 Yamaha YZ250 Base
2026 Yamaha YZ250F Base
2026 Yamaha YZ250FX Base
2026 Yamaha YZ450F Base
2026 Yamaha YZ450FX Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1