pag stock hirap, 15-42 combi, walang dulo, before im using stock 14-38 hanggan 110kph lang top speed ko all stock pati muffler, tapos pinalitan ko open pipe and then tune the carbs 100kph lang takbo ko hirap pang umabot, then i use 14-41 combi sprocket umabot 110kph in short time pero nag limit na yung cdi, then i change my cdi to rcdi and valve spring and remove block gasket and tune the carb umabot 130kph parang kulang paring sa dulo, then i replace again my sprocket combi to 14-42 umabot 145kph almost 1km run. and then medyo kulang pa kasi mabigat ako 111kls yung wieght ko, balak ko palitan ng 43 yung rear sprocket ko...