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3,175 Posts
well i did it and ordered the rkt head for my 900. he seems like a nice guy too deal with and was telling me that the stock head design is pretty dam stupid. the way he said is it going to make a pretty good difference and may increase gas mileage some too because of the increased combustion efficency. hope its pretty good look really trick. says i will need to remove thermostat because u really dont need it. everybody i talked to on here said he makes good stuff as do the guys on snowwest. :div20: rtk head linky