Honda has just released information on their 2014 motocross bikes, and the big news is the major changes to the 250F. Now looking very much like the 450, the new 250F has a frame that is designed to carry to engine lower and thus lower the bike’s center of gravity. The exhaust went to twin pipes just like the 450 (and like this 250F had from 2006 to 2009). The other claimed updates include a higher compression piston, new head porting, and a new dual-stage fuel injector. The swingarm, rear shock, and linkage ratio are new, and the fork has “new settings,” but it is still a ‘standard’ fork with a coil spring in each leg just as the previous year’s 250F had; the little bike did not follow the 450 with an air fork.
The 450 looks similar to last year’s model, keeping the air fork but changing up the engine’s intake and exhaust ports, as well as a new dual-timing fuel injector.
The 150R returns as well, but looks to have no major changes. There is not info yet on the 2014 250X and 450X.
For full details check out these links to the Honda website –