ThumperFaq: Yamaha 250F

Site maintained by Rick Kienle

2004 WR250F

The Yamaha YZ and WR 250F were introduced in 2001. For the first time a 250cc four stroke was competitive in the 125 two stroke class, as per AMA rules. For some reason, the WR250F had some extreme changes made to it in the US market. As delivered from the dealer, the WR250F is a lazy and sluggish bike! Some dealers will do some minor modifications but few will have any idea what to do to bring it up to YZ250F performance. Often the responses people have gotten from the shops are comical! Luckily, there is little cost associated with bringing the WRF up to YZF specs. The YZF, in stock form, also has some drawbacks or limitations that are generally easily corrected. Others are interested in making the YZF more trail friendly. The information in the following pages is provided to allow you to get the most out of your Yamaha baby thumper. The 2001 and 2002 model bikes were very similar. however, in 2003 Yamaha made significant upgrades to both bikes.

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2003 WR250F 

2002 WR250F

2001 YZ250F

2003 YZ250F

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The tuning fork avatar was created by ThumperTalk member thealexdexter.

DISCLAIMER: The modifications we describe in the following text are for educational purposes only. In no way do we recommend that you apply these modifications to your own motorcycle. If you do choose to go ahead and modify your motorcycle based on the information in this document you will accept all responsibility for your own actions. The author(s) of this FAQ and host(s) providing it for you accept no responsibility whatsoever. If you are unqualified to make any of the changes described herein but are bent on doing the modification, seek out a knowledgeable friend or professional mechanic for assistance.

WARNING: The modifications described here will make the WR250F fast! If you are a novice rider it is recommended that you make changes one at a time and only when you are ready for more power. Ride smart, ride safe.

The author(s) of this FAQ and the host(s) providing it have no connection or affiliation with Yamaha Motor Corp or ThumperTalk or their affiliates.

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