HONDA CRF450R Specification

Honda 4 The top model of the motocrosser CRF 450 R is a minor change.In order to improve the output characteristics in the low and middle speed range, the engine has reduced the exhaust valve diameter by 1 mm by changing the shape of the intake and exhaust port, the modification of the processing method of the crank pin, the adoption of the cam shaft built-in decompression, etc. Conducted.At the same time as reviewing the structure of the acceleration pump, the FCR cab which had been increased in diameter from 40φ to 41φ, the silencer internal pipe length was packed 25 mm and the silencer's mounting position also moved forward 25 mm, etc., the intake and exhaust system has also been brushed up .In the suspension, we reviewed the internal structure of the front suspension and also made the tire and chain guide a new type.The front brake also adopts a highly accurate link type master cylinder that amplifies the braking force according to the grip angle of the lever.In addition to improving the brake feeling, it succeeded in increasing the absolute power without increasing the disk diameter.