Major changes to 2010 Yamaha YZ250

Yamaha has identified sharp handling as the centrepiece of its clean sheet 2010 model Yamaha YZ250F motocrosser, with an all-new bilateral beam aluminium frame receiving most of the credit.

The frame features high lateral and torsional rigidity, which Yamaha claims offers a stable feel and precise handling,  allowing riders to “hang on longer and go harder”. This new frame is made up of about 20 parts of forged, extruded and panel aluminium parts welded together into a single unit.

Yamaha has retained the 250’s five-valve engine and carburetor in 2010, but the rest of the donk has been given a through makeover with a higher lift intake camshaft, revised exhaust port and intake funnels, new valve springs and retainers, a smaller oil tank, new design clutch, and a revised ignition map for the CDI .

The new frame also means the airbox is a different shape, which improves intake efficiency.

Yamaha reckons all the changes combine for a more linear power delivery, especially through the bottom end and mid-range.

To work in concert with the beefier engine, the gear ratios for third and fourth are now slightly taller.

Other changes include revalved front suspension, a flatter seat, a change to the fuel tank position, thicker radiator, a shorter wheelbase, higher ground clearance, less aggressive steering geometry, and there are a multitude of lighter parts.

The machine also has new textured plastic parts to minimise unsightly scratches and scuff marks, and white is now offered as a second colour alongside the signature blue and white. Wet weight is 102kg.

Follow the link for pricing and location of your nearest Yamaha dealer.