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#250r 1986 1986 trx 250r 1988 1989 250 motor 250r 250r clutch 250r hybrid 250r motor 310 310 kit 330pv 38mm carb 450r 500r a arms atc atc atc250r honda atc trx 250r atc250r axle bearings big bore build canada carb carburetor case cdi clutch complete controls coolant counterfeit money cr250 cr500 drag electrical engine esr fenders flywheel for sale fourwerx frame frame chassis hybrid fullbore gears glamis headlight honda honda 250r honda trx 250r hood ignition jetting jetting help carb kawasaki laegers lobo maier motor new guy parts paul turner pipe piston plastic plastics powdercoat powerband project pulse pwk carb quad quadtech question race fuel racing rebuild repair riding gear shift shaft shifter shocks spark sputter ssd solution suspension swing arm top end transmission trx trx 250r trx atc 250r trx250r trx250rhood trx250rstock wanted
  1. Engine and Transmission
    Im thinking about purchasing a new head and dome for my 86 250, the head i have now is shaved for high compression and has just over 190 psi. What are the pros of running a cool head compared to a stock head and dome? -Thank you!
    coolhead pro design top end
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