New Honda 2015 CRF250R

Skirmishing in a close fought arena of competition, the CRF250R has consistently proven itself a polished performer. Its blend of power -the fluid way it produces it- and razor-sharp handling agility...

New Honda 2015 CRF250R - Offroad > Competition

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Overview

INTRODUCTION

In 2014 HRC's engineers upgraded the CRF250R with the same aluminium beam frame and over-arching design philosophy of mass-centralisation as the CRF450R. The new 2015 CRF250R expands on this direction of development with chassis and engine upgrades that tie it even closer to its larger capacity sibling, enhancing further its ability to cut lap times in the hands of both professional and amateur riders alike.

ENGINE

Honda's 249cc MX power plant gained a redesigned cylinder head and inlet exhaust porting, with increased compression ratio. At this point in development HRC's engineers focused on the rider's ability to easily adjust the engine to suit conditions and riding style, plus exhaust efficiency and throttle feel. The four-valve Unicam unit has always impressed with its broad spread of useful power no matter the revs, plus sharp throttle response. Adding Honda's EMSB to the mix has increased its usability further. This is a bonus for the club racer in particular, rather than set up during the week and hope for matching condition at the weekend or take a laptop to the track, the rider just has to stop with the engine at idle and press and hold the button for just under a second to select the next map in sequence.

SUSPENSION

The SFF-AIR-TAC front suspension has been developed for the CRF250R by Showa to unlock the frame's extra performance potential and shaves 1.3kg weight compared to the 14YM. The fully adjustable right fork leg controls both compression and rebound damping force while the left fork leg compresses air using a damper-less structure. This distribution achieves a controlled right and left balance, enhancing reaction over bumps and stability while hard on the front brake. Three chambers are employed by the left fork leg to manage effective 'spring' rate. The Balance chamber operates from the off and at low speed, the Inner chamber is responsible for the mid-range stroke and the Outer Cylinder chamber is used as the forks near their bump stops.