Motocross is a relentless taskmaster for engineers because what’s factory spec today is tomorrow’s old tech. Accordingly, after a complete revamp for 2017, Kawasaki’s enduring (now in its 15th model year) four-stroke 250 has already been updated for 2018. Improvements to the 249cc DOHC single include new intake-tract dimensions, plus a new camshaft, fuel pump, throttle body for the dual-injector EFI, and exhaust header. In chassis features, the Showa Separate Function Fork (SFF) gets a softer spring with more preload and revised damping settings; the shock shares the latter upgrades as well.
The engine is a tiger on the top-end, and the power curve is well-matched to the five-speed gearbox’s ratios overall; the only niggle here is, in our opinion, that more bottom-end grunt would be useful for driving off berms and out of tight corners. Handling-wise, the KX250F works well with the rider, allowing easy line choices—including quick midcorner corrections—and remaining composed in difficult situations such as braking bumps. A comfortable cockpit with adjustable handlebar and footpeg positions seals the deal.
Likes: Wicked top-end power, excellent handling, adjustable cockpit
Dislikes: Could use more poke at low rpm
Verdict: A welcome mix of poise and potency

/cloudfront-us-east-1.images.arcpublishing.com/octane/LWBFMM4GFRF6DMYOIFCUZKR5NA.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/6DLRAI6Y7RGM5BJ4XQ5S4I7B5Q.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/FP3BEUWUV5AXNP4XD5B2NQ2T3I.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/VH3KHVEPTZBW3PMW4FILG7KTRI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/E3EZTFJ4SNEXREY2EOYILUINXM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/ENMROQOVOVH7ZLHC7WFWJX52EM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/PAC5FEGNSBBB5JLXQ6GWEBB2KI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/DKBQ5TKZKFB5RGK45T344N6ZYI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/ZM6HFGPAQVDAHFMPXXKVCUMU2U.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/MHXGBY55VFAGXNO4VTQYQF7SIU.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/T4SIVQJODRBGHCGMKHWAF5QYPM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/3GLDHNCLSREALL4QAK5U76JILI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/OFSXJJ5PZFEZ5D5ZPMCFVHJUMA.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/N2JLNLG44VEKBMEPORRDTMX5A4.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/PYWEGG6FHJD6XLPKICS7XHMMZ4.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/XXFQQQ4AYJDCXDGVW3JTHAYONI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/GJU7WCWDO5F47MTJCC6EAADMGI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/IN263JIBTBCD3O265IMSCW6OZM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/SMAQ354X2JH7NJATXNSQY4NRS4.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/GGOH2AQRSVHY5C5JLNEVYLB5SU.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/TJJEHV3ATZFFXHUYZABHXKE2DI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/WIC4RXQ36BAXNIW6U4UJ3XDLKI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/B4PQZLY4LBHITGE5ZRRM2N5YNU.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/OBYS7KWZUJFCHD44YPTSVM5EF4.jpg)