Tanaka's factory Yamaha uses Rinaldi Racing clutch components and Xtrig triple clamps.
Takase Tanaka was hampered by a first-moto crash on Sunday, but a solid second behind Narita in the second moto helped him finish fifth overall in the IA1 class.
Factory Kawasaki rider Hiroaki Arai is a former IA2 Champion, and he is now the number-one IA1 class rider for the green team. Arai finished second overall at Kyushu with steady 3-3 scores.
As expected, Arai's factory KX450F was based on a standard 2012 model, which already recieved a major update. Arai's machine was outfitted with the factory Showa SFF Air Fork, as well as a handful of special parts. Note his dual starting devices, which give him an option for a more- or less-aggressive setting, depending on traction behind the starting line. Kyushu has a concrete launch pad, so we doubt he used either, though.
Save for the works Showa suspension, triple clamps and hubs, much of Arai's factory bike appeared to be standard.
The most interesting bike in the Kawasaki pits was the KX250F, which recieved all-new bodywork that closely resembles the current KX450F's.
Takuya Mihara is the defending IA2 Champion, and he piloted the factory KX250F.
The 2013 Kawasaki KX250F recieved the same chassis updates that the '12 KX450F did, and the race bike appeared much slimmer than the standard versions that other racers had. Furthermore, the dual EFI nozzles on the other side of the bike looked to be repositioned, with a better design that offered more protection to the electronics and a straighter overall intake tract.
TAGS: 2013 bikes, japan nationals, japanese motocross, spy photos
