TA V3850 Street Intimidator (SI) heads require either a stock stamped steel rocker or our TA V1309SI series rockers. Roller rockers for stock heads do not line up perfectly with the valve tip. The stock steel rocker has a much wider footprint than a roller, for this reason they are compatible with the SI heads. Roller rockers for production heads can be made to work if the rocker spacing is adjusted.
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