You must view this video before you do any performance mods on crf250l

https://search.aol.com/aol/video?s_it=sb-top&s_chn=prt_bon&v_t=comsearch&q=dyno+test+crf250l

Watch the video that is 4:05 minutes.

The FMF tuner he refers to is now EJK tuner.

That FMF header on this bike is a Powerbomb.

 

5HP is significant but would it be worth the extra money and would it impact fuel economy? For those that have done these changes to the bike it has reduced fuel economy as well. Reducing fuel range on a bike with this small of a tank may be fine if you ride it close to home or gas stations. If you're out in the boonies losing that extra distance might be a deal breaker.

 

I am going to change my tank and I haven't done any performance mods. The factory tank is just too small.