it is a teaching in motorcycle mechanics to run in your bike, i mean the subject and not the uncle at the motordiam.Originally posted by HighwayAngel:Erm actually hor on my own opinion lah,... there is no need to run in lor,... cos its just becos motorshop scare pple drag till top speed then kana jam... i have a fren ridin KRR came out on the first day when suddenly he's piston jammed when he's not even dragin just cruisin at less then 80 km/hr.... but it would be good that u run in at least 800km if u wanna ride that bike for long term, if the piston will jammed it will jammed at any speed.... i change a new block with new original tzr piston with out running in ... went to try my top and nothing happened,been ridin that block for almost a year and nothing happened yet... u see lor,.... if u think running in good anot lor maybe by then ure bike power not that strong anymore... imagine u running at an average RPM of about 6000,... imagine ure piston going up and down for 6000 time per minute, how much metal particle will be scrap away if u keeps running at this speed for 1000km or 2000km
...... u decide for ureself lor