A friend asked me if id have a look at his ER6 (650 Kawasaki twin) to see if i could get a bit more power for the Thundersport GB junior power bike class...Hmmm....im not a mingi twin person really....but it is Kawasaki after all...and i want something 'up my sleeve' if the 400 class declines much more. So... we increased the compression a bit...had a bit of a play with the ports and put in a couple of reprofiled cams,machined the pistons.Then a trip to my good friend...John Warrinton at Malton for him to work his magic on his dyno....and 'hey presto' 84.6 bhp and 49ft/lb of torque. Im not sure what they make as standard?? But he's got a grin from 'ear to ear' so i guess its better?
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