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home / Shop / Categories / Stator / Charging Coils / Yamaha YFB250 Timberwolf High Performance CDI Unit

Yamaha YFB250 Timberwolf High Performance CDI Unit

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SKU: RM02049

Item Condition: New

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(£138.54 exc. VAT)
Full Description
Technical Specification

Yamaha YFB250 Timberwolf High Performance CDI Unit

Easy Installation

Upgrade effortlessly with our Plug-and-Play design, ensuring a direct fit for quick installation by enthusiasts of all levels.

Performance Boost

Experience a smoother ride with an enhanced timing curve and a raised rev limiter (approx. 1000 rpm), unlocking your ATV’s full potential.

Premium Components

Our CDI Unit features high-grade electronic components, guaranteeing durability and reliability that surpasses OEM standards.

Quality Assurance

Rest easy knowing our CDI Unit is built to last, offering superior quality and durability for your Yamaha YFB250 Timberwolf.

Durable and Reliable

Built for longevity, our CDI Unit promises unmatched durability and reliability, ensuring it stands the test of time on any off-road adventure.

User-Friendly Upgrade

Enjoy enhanced performance without the complexity. Our CDI Unit is easy to use, making it the ideal choice for ATV enthusiasts seeking a seamless upgrade.

Fits Models


Recreational ATVs:

  • YFB 250 Timberwolf (1994-2000)
  • YFM 250 Bear Tracker (1999-2000)
  • YFM 250 Bear Tracker California (1999-2000)

Replaces OEM

  • 4BD-85540-10-00

Moto-Electrical is here to help you find the correct parts and solve any technical or fitment issues therefore, don’t hesitate to Get in touch.

Our products can be ordered online or over the phone 01953 603420 and delivered to you with one of the couriers in a quick and effective way.
Alternatively you can contact us via our online Web Chat.

We are convenient, straightforward and affordably priced.

With over 4000 products and growing as we are adding new products on a monthly basis, we have become the leading supplier of aftermarket electrical parts and accessories for a variety of vehicles, including motorcycles, ATV’s, tractors, forklifts, outboard engines and more.

For a comprehensive understanding of our policies and terms, we kindly invite you to visit our Terms and Conditions page.

To discover our latest offerings and exciting new products, please visit our New Products page.

Got a diagnostic problem? Visit our product test & diagnostic page.

Company Details

Address:  Eleven Mile Lane, Suton, Wymondham, NR18 9JL

Email: [email protected]
Phone: 01953 603 420 

Office Hours Open Hours
Monday – 8:00 AM – 17:00 PM Monday – 8:00 AM – 16:30 PM
Tuesday – 8:00 AM – 17:00 PM Tuesday – 8:00 AM – 16:30 PM
Wednesday – 8:00 AM – 17:00 PM Wednesday – 8:00 AM – 16:30 PM
Thursday – 8:00 AM – 17:00 PM Thursday – 8:00 AM – 16:30 PM
Friday – 8:00 AM – 17:00 PM Friday – 8:00 AM – 16:30 PM
Saturday – Closed Saturday – Closed
Sunday – Closed Sunday – Closed

Choose us as your trusted supplier of electrical parts for unbeatable quality, competitive pricing, expert support, and a wide range of reliable products to meet all your needs.

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Height: 25mm 
Length: 65mm 
Width: 55mm

Other specifications:
Number of plugs: 2 
Number of pins: 8

Please note that: The only real way to test your CDI box is to swap it out with another known good unit from the same year/make/model. Because of this, we recommend that you rule everything else out before replacing the CDI box..

Interchanges/Cross References