johnr wrote:powerscreen motors are detuned down to 'just' 100bhp-ish to give them more mid range grunt. accepted logic says gixxer cams and cdi are required to release the extra ponies but i seem to remember theres more to it than that. efe engine is aircooled and just a development of the kat motor, but the gixxer requires all new engine mounts to fit it in the kat frame. i bought a gixxer n motor last year from a guy on oss with a dyno proven 130rwhp and i gave him 300 quid for it, usually they go for a bit more, but 300 for a powerscreen is ok, not cheap mind, just ok. efe motors seem to be starting at about 400 quid these days
Says here and everywhere else i've looked that they are 136bhp - all years, but its not really my department
I'm going to have a look at the bike that hiding behind it sometime next week as its an earlier model and doesnt have the fairing 
