News – News Honda 2013: CRF450R, CRF250R and CRF110F – CRF250R 2013: Optimization is Won?

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Honda 2013 news: CRF450R, CRF250R and CRF110F

News - News Honda 2013: CRF450R, CRF250R and CRF110F - CRF250R 2013: Optimization is Won?

Honda makes big changes to its 2013 motocross range: the CRF110F makes its appearance, the CRF250R offers significant improvements and the formidable CRF450R is profoundly redesigned, especially in terms of the cycle part. Presentations.

CRF250R 2013: optimizing is won ?

The defending champion in Supercross Lites U.S is also entitled to modifications for 2013. But unlike the 450, the CRF250R evolves only by small touches, both in terms of engine and cycle part..

Technically, the 249.4 cc Unicam 4-stroke single cylinder is strictly identical to that of 2011: its bore and stroke dimensions (76 * 53.8 mm) are retained, as is its compression ratio of 13.2 : 1 and the diameter of its two titanium intake valves (30.5 mm) and its steel exhaust valves (25 mm).

On the other hand, the PGM-FI injection has been reprogrammed to boost low and mid revs, in order to improve traction when exiting curves. As on the CRF450R, the exhaust has been redesigned for more efficiency and above all to lower the noise level: the Tokyo Reds announce a reduction of two decibels at high speeds, which will help this 2013 novelty to meet the draconian noise standards..

But there again, this work on the exhaust "stifles" the mono slightly: the CRF250R goes from 32.4 kW (44 hp) at 11,000 rpm in 2012 to 27.9 kW (37.9 hp) at 11,000 rpm in 2013 and from 29.3 Nm of torque at 8,000 rpm in 2012 to 26.2 Nm of torque at 8,500 rpm in 2013. For the same reasons, the weight when full facts are reduced from 100 , 7 kg in 2012 to 105 kg all full made in 2013: as on the 450 cc, the increased efficiency of the exhaust translates into additional kilos …

Side cycle, the Honda CRF250R 2013 retains the same double beam chassis and the same aluminum swingarm. The Showa 48 mm fork has new settings and the size of its pistons is increased from 35 to 38 mm, to the benefit of "precision and maneuverability", assures Honda by specifying that the rebound and the compression are adjustable on"16 positions".

At the rear, the mono-shock also benefits from reconditioning and new settings to improve its efficiency. This Pro-link type element is adjustable in preload, compression and rebound.

The new Honda motocross also adopts new tires in 2013: Dunlop MX51 Geomax 81/100/21 at the front and 100/90/19 at the rear. According to the manufacturer, this assembly would not only be more efficient but it would especially weigh 400 g less at the rear. !

Finally, like the CRF450R, the 2013 CRF250R adopts a new, more aggressive trim and a two-piece disc cover at the front. Its price is not yet known, but its arrival is scheduled for September-October 2012.

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