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/P22F5SVEMNEHLPEJDU3M6Q567M.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/KPFET4THGREKPGIMGTXYBAKKSA.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/323IPA4BLVDHFHVPJVC4YZBFDE.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/TJJICRFZSZEAHINLDFSTYVN5PU.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/FORIOJLCNZBONH6U3RPO5WLDN4.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/JUSPZP5FPBE4BDW372ZE7AZCQE.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/RJUQJTUY2BDOTEJCLAF5FKYVRE.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/BRYC3RKQIZDPBE237J37MFPF5Q.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/ANITOLZVDBBXHKXDJEBDFYHCCI.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/OVCONDHX65ESJN75JBZXD5D53E.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/QGTYXK4QOVGBHNHYJYY6O6HPXM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/AZKRC3NTTRDPDO4X6INRBYRS3E.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/F6NSKOGUMVGPJLNTB53LYNH22A.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/UV2L2NVTDFA25PJ6OCJ5EIXAYM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/HG3AVSFJFZHUHHECIC63PWTJDQ.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/6CP6VKBMDRHPNLH4JFYVW6DMCM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/4FYW5AN7YVFZBMWPAZ6COUXJJ4.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/VUOTFUMRZBFILJ4TBSKYNRPZDM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/A2TMJNBKPBEQJEF6PB2Q5PGQHM.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/4YLIEQ7HGBH4FNXXYONJYS5K7U.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/5BDFMBN2KJE7JNJK7LJ7EG4A2M.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/C3WGBZCFABC7XKBCFCCXDWYWME.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/PLQ5M7MG3RG7BHYH2OILWJZIPY.jpg)
/cloudfront-us-east-1.images.arcpublishing.com/octane/CCPZFYVVRBF2DLPMDYKPF4TMME.jpg)