PFEP8869 - PROFLOW ALTERNATOR PULLEY V-BELT 80MM OD X 17MM ID

 Proflow 80mm billet aluminium alternator pulley is a good mid range diameter pulley for a street driven high rpm engine. This still considered larger for high RPM engines. (most std pullys are around 50mm). If you want to further protect you alternator from overrun, you may consider using our PFEP8868 which is bigger again. 

Example: if you are turning 7000rpm and have a 6 inch crank pulley with a 2 inch alternator pulley, your alternator is doing 21,000 rpm!